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2. Overview of the TCV digital real-time plasma control system and its applications

Author

Galperti, Cristian, Felici, Federico, Vu, Trang, Sauter, Olivier, Carpanese, F., Kong, M., Marceca, G., Merle, A., Pau, A., Perek, A., Pesamosca, F., Baquero-Ruiz, M., Coda, S., Decker, J., Duval, B., Gospodarczyk, M., Karpushov, A., Marchioni, S., Maier, A., Marletaz, B., Segovia, A., Vincent, B., Yildiz, C., Carnevale, D., Ferron, N., Koenders, J., Kool, B., Manduchi, G., Maraschek, M., Milne, P., Neto, A.C., Poli, E., Ravensbergen, T., Reich, M., Rispoli, N., and Sartori, F.

Published
2024
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3. Strategy to systematically design and deploy the ITER plasma control system: A system engineering and model-based design approach

Author

de Vries, P.C., Cinque, M., De Tommasi, G., Treutterer, W., Humphreys, D., Walker, M., Felici, F., Gomez, I., Zabeo, L., Ravensbergen, T., Pangione, L., Rimini, F., Rosiello, S., Gribov, Y., Dubrov, M., Vu, A., Carvalho, I., Lee, W.R., Tak, T., Zagar, A., Gunion, R., Pitts, R., Mattei, M., Pironti, A., Ariola, M., Pesamosca, F., Kudlacek, O., Raupp, G., Pautasso, G., Nouailletas, R., Moreau, Ph., and Weldon, D.

Published
2024
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8. Overview of the TCV tokamak experimental programme

Author

Reimerdes, H, Agostini, M, Alessi, E, Alberti, S, Andrebe, Y, Arnichand, H, Balbin, J, Bagnato, F, Baquero-Ruiz, M, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Brida, D, Brunner, S, Bogar, C, Bogar, O, Bolzonella, T, Bombarda, F, Bouquey, F, Bowman, C, Brunetti, D, Buermans, J, Bufferand, H, Calacci, L, Camenen, Y, Carli, S, Carnevale, D, Carpanese, F, Causa, F, Cavalier, J, Cavedon, M, Cazabonne, J, Cerovsky, J, Chandra, R, Chandrarajan Jayalekshmi, A, Chellai, O, Chmielewski, P, Choi, D, Ciraolo, G, Classen, I, Coda, S, Colandrea, C, Dal Molin, A, David, P, De Baar, M, Decker, J, Dekeyser, W, De Oliveira, H, Douai, D, Dreval, M, Dunne, M, Duval, B, Elmore, S, Embreus, O, Eriksson, F, Faitsch, M, Falchetto, G, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Fransson, E, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Galperti, C, Garavaglia, S, Garcia-Munoz, M, Geiger, B, Giacomin, M, Giruzzi, G, Gobbin, M, Golfinopoulos, T, Goodman, T, Gorno, S, Granucci, G, Graves, J, Griener, M, Gruca, M, Gyergyek, T, Haelterman, R, Hakola, A, Han, W, Happel, T, Harrer, G, Harrison, J, Henderson, S, Hogeweij, G, Hogge, J, Hoppe, M, Horacek, J, Huang, Z, Iantchenko, A, Innocente, P, Insulander Bjork, K, Ionita-Schrittweiser, C, Isliker, H, Jardin, A, Jaspers, R, Karimov, R, Karpushov, A, Kazakov, Y, Komm, M, Kong, M, Kovacic, J, Krutkin, O, Kudlacek, O, Kumar, U, Kwiatkowski, R, Labit, B, Laguardia, L, Lammers, J, Laribi, E, Laszynska, E, Lazaros, A, Linder, O, Linehan, B, Lipschultz, B, Llobet, X, Loizu, J, Lunt, T, Macusova, E, Marandet, Y, Maraschek, M, Marceca, G, Marchetto, C, Marchioni, S, Marmar, E, Martin, Y, Martinelli, L, Matos, F, Maurizio, R, Mayoral, M, Mazon, D, Menkovski, V, Merle, A, Merlo, G, Meyer, H, Mikszuta-Michalik, K, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Moulton, D, Muhammed, H, Myatra, O, Mykytchuk, D, Napoli, F, Nem, R, Nielsen, A, Nocente, M, Nowak, S, Offeddu, N, Olsen, J, Orsitto, F, Pan, O, Papp, G, Pau, A, Perek, A, Pesamosca, F, Peysson, Y, Pigatto, L, Piron, C, Poradzinski, M, Porte, L, Putterich, T, Rabinski, M, Raj, H, Rasmussen, J, Ratta, G, Ravensbergen, T, Ricci, D, Ricci, P, Rispoli, N, Riva, F, Rivero-Rodriguez, J, Salewski, M, Sauter, O, Schmidt, B, Schrittweiser, R, Sharapov, S, Sheikh, U, Sieglin, B, Silva, M, Smolders, A, Snicker, A, Sozzi, C, Spolaore, M, Stagni, A, Stipani, L, Sun, G, Tala, T, Tamain, P, Tanaka, K, Tema Biwole, A, Terranova, D, Terry, J, Testa, D, Theiler, C, Thornton, A, Thrysoe, A, Torreblanca, H, Tsui, C, Vaccaro, D, Vallar, M, Van Berkel, M, Van Eester, D, Van Kampen, R, Van Mulders, S, Verhaegh, K, Verhaeghe, T, Vianello, N, Villone, F, Viezzer, E, Vincent, B, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weisen, H, Wendler, N, Wensing, M, Widmer, F, Wiesen, S, Wischmeier, M, Wijkamp, T, Wunderlich, D, Wuthrich, C, Yanovskiy, V, Zebrowski, J, Reimerdes H., Agostini M., Alessi E., Alberti S., Andrebe Y., Arnichand H., Balbin J., Bagnato F., Baquero-Ruiz M., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Brida D., Brunner S., Bogar C., Bogar O., Bolzonella T., Bombarda F., Bouquey F., Bowman C., Brunetti D., Buermans J., Bufferand H., Calacci L., Camenen Y., Carli S., Carnevale D., Carpanese F., Causa F., Cavalier J., Cavedon M., Cazabonne J. A., Cerovsky J., Chandra R., Chandrarajan Jayalekshmi A., Chellai O., Chmielewski P., Choi D., Ciraolo G., Classen I. G. J., Coda S., Colandrea C., Dal Molin A., David P., De Baar M. R., Decker J., Dekeyser W., De Oliveira H., Douai D., Dreval M., Dunne M. G., Duval B. P., Elmore S., Embreus O., Eriksson F., Faitsch M., Falchetto G., Farnik M., Fasoli A., Fedorczak N., Felici F., Fevrier O., Ficker O., Fil A., Fontana M., Fransson E., Frassinetti L., Furno I., Gahle D. S., Galassi D., Galazka K., Galperti C., Garavaglia S., Garcia-Munoz M., Geiger B., Giacomin M., Giruzzi G., Gobbin M., Golfinopoulos T., Goodman T., Gorno S., Granucci G., Graves J. P., Griener M., Gruca M., Gyergyek T., Haelterman R., Hakola A., Han W., Happel T., Harrer G., Harrison J. R., Henderson S., Hogeweij G. M. D., Hogge J. -P., Hoppe M., Horacek J., Huang Z., Iantchenko A., Innocente P., Insulander Bjork K., Ionita-Schrittweiser C., Isliker H., Jardin A., Jaspers R. J. E., Karimov R., Karpushov A. N., Kazakov Y., Komm M., Kong M., Kovacic J., Krutkin O., Kudlacek O., Kumar U., Kwiatkowski R., Labit B., Laguardia L., Lammers J. T., Laribi E., Laszynska E., Lazaros A., Linder O., Linehan B., Lipschultz B., Llobet X., Loizu J., Lunt T., Macusova E., Marandet Y., Maraschek M., Marceca G., Marchetto C., Marchioni S., Marmar E. S., Martin Y., Martinelli L., Matos F., Maurizio R., Mayoral M. -L., Mazon D., Menkovski V., Merle A., Merlo G., Meyer H., Mikszuta-Michalik K., Molina Cabrera P. A., Morales J., Moret J. -M., Moro A., Moulton D., Muhammed H., Myatra O., Mykytchuk D., Napoli F., Nem R. D., Nielsen A. H., Nocente M., Nowak S., Offeddu N., Olsen J., Orsitto F. P., Pan O., Papp G., Pau A., Perek A., Pesamosca F., Peysson Y., Pigatto L., Piron C., Poradzinski M., Porte L., Putterich T., Rabinski M., Raj H., Rasmussen J. J., Ratta G. A., Ravensbergen T., Ricci D., Ricci P., Rispoli N., Riva F., Rivero-Rodriguez J. F., Salewski M., Sauter O., Schmidt B. S., Schrittweiser R., Sharapov S., Sheikh U. A., Sieglin B., Silva M., Smolders A., Snicker A., Sozzi C., Spolaore M., Stagni A., Stipani L., Sun G., Tala T., Tamain P., Tanaka K., Tema Biwole A., Terranova D., Terry J. L., Testa D., Theiler C., Thornton A., Thrysoe A., Torreblanca H., Tsui C. K., Vaccaro D., Vallar M., Van Berkel M., Van Eester D., Van Kampen R. J. R., Van Mulders S., Verhaegh K., Verhaeghe T., Vianello N., Villone F., Viezzer E., Vincent B., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weisen H., Wendler N., Wensing M., Widmer F., Wiesen S., Wischmeier M., Wijkamp T. A., Wunderlich D., Wuthrich C., Yanovskiy V., Zebrowski J., Reimerdes, H, Agostini, M, Alessi, E, Alberti, S, Andrebe, Y, Arnichand, H, Balbin, J, Bagnato, F, Baquero-Ruiz, M, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Brida, D, Brunner, S, Bogar, C, Bogar, O, Bolzonella, T, Bombarda, F, Bouquey, F, Bowman, C, Brunetti, D, Buermans, J, Bufferand, H, Calacci, L, Camenen, Y, Carli, S, Carnevale, D, Carpanese, F, Causa, F, Cavalier, J, Cavedon, M, Cazabonne, J, Cerovsky, J, Chandra, R, Chandrarajan Jayalekshmi, A, Chellai, O, Chmielewski, P, Choi, D, Ciraolo, G, Classen, I, Coda, S, Colandrea, C, Dal Molin, A, David, P, De Baar, M, Decker, J, Dekeyser, W, De Oliveira, H, Douai, D, Dreval, M, Dunne, M, Duval, B, Elmore, S, Embreus, O, Eriksson, F, Faitsch, M, Falchetto, G, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Fransson, E, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Galperti, C, Garavaglia, S, Garcia-Munoz, M, Geiger, B, Giacomin, M, Giruzzi, G, Gobbin, M, Golfinopoulos, T, Goodman, T, Gorno, S, Granucci, G, Graves, J, Griener, M, Gruca, M, Gyergyek, T, Haelterman, R, Hakola, A, Han, W, Happel, T, Harrer, G, Harrison, J, Henderson, S, Hogeweij, G, Hogge, J, Hoppe, M, Horacek, J, Huang, Z, Iantchenko, A, Innocente, P, Insulander Bjork, K, Ionita-Schrittweiser, C, Isliker, H, Jardin, A, Jaspers, R, Karimov, R, Karpushov, A, Kazakov, Y, Komm, M, Kong, M, Kovacic, J, Krutkin, O, Kudlacek, O, Kumar, U, Kwiatkowski, R, Labit, B, Laguardia, L, Lammers, J, Laribi, E, Laszynska, E, Lazaros, A, Linder, O, Linehan, B, Lipschultz, B, Llobet, X, Loizu, J, Lunt, T, Macusova, E, Marandet, Y, Maraschek, M, Marceca, G, Marchetto, C, Marchioni, S, Marmar, E, Martin, Y, Martinelli, L, Matos, F, Maurizio, R, Mayoral, M, Mazon, D, Menkovski, V, Merle, A, Merlo, G, Meyer, H, Mikszuta-Michalik, K, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Moulton, D, Muhammed, H, Myatra, O, Mykytchuk, D, Napoli, F, Nem, R, Nielsen, A, Nocente, M, Nowak, S, Offeddu, N, Olsen, J, Orsitto, F, Pan, O, Papp, G, Pau, A, Perek, A, Pesamosca, F, Peysson, Y, Pigatto, L, Piron, C, Poradzinski, M, Porte, L, Putterich, T, Rabinski, M, Raj, H, Rasmussen, J, Ratta, G, Ravensbergen, T, Ricci, D, Ricci, P, Rispoli, N, Riva, F, Rivero-Rodriguez, J, Salewski, M, Sauter, O, Schmidt, B, Schrittweiser, R, Sharapov, S, Sheikh, U, Sieglin, B, Silva, M, Smolders, A, Snicker, A, Sozzi, C, Spolaore, M, Stagni, A, Stipani, L, Sun, G, Tala, T, Tamain, P, Tanaka, K, Tema Biwole, A, Terranova, D, Terry, J, Testa, D, Theiler, C, Thornton, A, Thrysoe, A, Torreblanca, H, Tsui, C, Vaccaro, D, Vallar, M, Van Berkel, M, Van Eester, D, Van Kampen, R, Van Mulders, S, Verhaegh, K, Verhaeghe, T, Vianello, N, Villone, F, Viezzer, E, Vincent, B, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weisen, H, Wendler, N, Wensing, M, Widmer, F, Wiesen, S, Wischmeier, M, Wijkamp, T, Wunderlich, D, Wuthrich, C, Yanovskiy, V, Zebrowski, J, Reimerdes H., Agostini M., Alessi E., Alberti S., Andrebe Y., Arnichand H., Balbin J., Bagnato F., Baquero-Ruiz M., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Brida D., Brunner S., Bogar C., Bogar O., Bolzonella T., Bombarda F., Bouquey F., Bowman C., Brunetti D., Buermans J., Bufferand H., Calacci L., Camenen Y., Carli S., Carnevale D., Carpanese F., Causa F., Cavalier J., Cavedon M., Cazabonne J. A., Cerovsky J., Chandra R., Chandrarajan Jayalekshmi A., Chellai O., Chmielewski P., Choi D., Ciraolo G., Classen I. G. J., Coda S., Colandrea C., Dal Molin A., David P., De Baar M. R., Decker J., Dekeyser W., De Oliveira H., Douai D., Dreval M., Dunne M. G., Duval B. P., Elmore S., Embreus O., Eriksson F., Faitsch M., Falchetto G., Farnik M., Fasoli A., Fedorczak N., Felici F., Fevrier O., Ficker O., Fil A., Fontana M., Fransson E., Frassinetti L., Furno I., Gahle D. S., Galassi D., Galazka K., Galperti C., Garavaglia S., Garcia-Munoz M., Geiger B., Giacomin M., Giruzzi G., Gobbin M., Golfinopoulos T., Goodman T., Gorno S., Granucci G., Graves J. P., Griener M., Gruca M., Gyergyek T., Haelterman R., Hakola A., Han W., Happel T., Harrer G., Harrison J. R., Henderson S., Hogeweij G. M. D., Hogge J. -P., Hoppe M., Horacek J., Huang Z., Iantchenko A., Innocente P., Insulander Bjork K., Ionita-Schrittweiser C., Isliker H., Jardin A., Jaspers R. J. E., Karimov R., Karpushov A. N., Kazakov Y., Komm M., Kong M., Kovacic J., Krutkin O., Kudlacek O., Kumar U., Kwiatkowski R., Labit B., Laguardia L., Lammers J. T., Laribi E., Laszynska E., Lazaros A., Linder O., Linehan B., Lipschultz B., Llobet X., Loizu J., Lunt T., Macusova E., Marandet Y., Maraschek M., Marceca G., Marchetto C., Marchioni S., Marmar E. S., Martin Y., Martinelli L., Matos F., Maurizio R., Mayoral M. -L., Mazon D., Menkovski V., Merle A., Merlo G., Meyer H., Mikszuta-Michalik K., Molina Cabrera P. A., Morales J., Moret J. -M., Moro A., Moulton D., Muhammed H., Myatra O., Mykytchuk D., Napoli F., Nem R. D., Nielsen A. H., Nocente M., Nowak S., Offeddu N., Olsen J., Orsitto F. P., Pan O., Papp G., Pau A., Perek A., Pesamosca F., Peysson Y., Pigatto L., Piron C., Poradzinski M., Porte L., Putterich T., Rabinski M., Raj H., Rasmussen J. J., Ratta G. A., Ravensbergen T., Ricci D., Ricci P., Rispoli N., Riva F., Rivero-Rodriguez J. F., Salewski M., Sauter O., Schmidt B. S., Schrittweiser R., Sharapov S., Sheikh U. A., Sieglin B., Silva M., Smolders A., Snicker A., Sozzi C., Spolaore M., Stagni A., Stipani L., Sun G., Tala T., Tamain P., Tanaka K., Tema Biwole A., Terranova D., Terry J. L., Testa D., Theiler C., Thornton A., Thrysoe A., Torreblanca H., Tsui C. K., Vaccaro D., Vallar M., Van Berkel M., Van Eester D., Van Kampen R. J. R., Van Mulders S., Verhaegh K., Verhaeghe T., Vianello N., Villone F., Viezzer E., Vincent B., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weisen H., Wendler N., Wensing M., Widmer F., Wiesen S., Wischmeier M., Wijkamp T. A., Wunderlich D., Wuthrich C., Yanovskiy V., and Zebrowski J.

Abstract

The tokamak à configuration variable (TCV) continues to leverage its unique shaping capabilities, flexible heating systems and modern control system to address critical issues in preparation for ITER and a fusion power plant. For the 2019-20 campaign its configurational flexibility has been enhanced with the installation of removable divertor gas baffles, its diagnostic capabilities with an extensive set of upgrades and its heating systems with new dual frequency gyrotrons. The gas baffles reduce coupling between the divertor and the main chamber and allow for detailed investigations on the role of fuelling in general and, together with upgraded boundary diagnostics, test divertor and edge models in particular. The increased heating capabilities broaden the operational regime to include Te/Ti ∼1 and have stimulated refocussing studies from L-mode to H-mode across a range of research topics. ITER baseline parameters were reached in type-I ELMy H-modes and alternative regimes with 'small' (or no) ELMs explored. Most prominently, negative triangularity was investigated in detail and confirmed as an attractive scenario with H-mode level core confinement but an L-mode edge. Emphasis was also placed on control, where an increased number of observers, actuators and control solutions became available and are now integrated into a generic control framework as will be needed in future devices. The quantity and quality of results of the 2019-20 TCV campaign are a testament to its successful integration within the European research effort alongside a vibrant domestic programme and international collaborations.

Published
2022

10. Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV

Author

Koenders, J.T.W., Perek, A., Kool, B., Février, O., Ravensbergen, T., Galperti, C., Duval, B., Theiler, C., van Berkel, M., Koenders, J.T.W., Perek, A., Kool, B., Février, O., Ravensbergen, T., Galperti, C., Duval, B., Theiler, C., and van Berkel, M.

Abstract

This paper presents the first result using nitrogen-seeded exhaust feedback control of the NII impurity emission front in TCV. The NII emission front position is consistently located below its commonly used CIII counterpart, indicating the NII emission front is representative of a colder plasma region. We demonstrate control of the NII impurity emission front position for two cases: (a) using nitrogen seeding as the sole actuator, and (b) using deuterium fueling as an actuator while injecting a small amount of nitrogen that remains a trace impurity. For sole nitrogen actuation, peak target current density is significantly reduced when the NII emission front approaches the x-point (≈50% for the NII front at the halfway point). When actuating with deuterium, peak target current density is less affected, which is explained by changes in fueling engendering a different scrape-off-layer plasma density. Perturbative (system identification) experiments show that nitrogen actuation induces a stronger, but slower, response of the NII emission front than deuterium actuation. Moving the NII emission front back to the target after pushing it towards the x-point has proven difficult, where both the NII front position and total radiated power do not reach pre-seeding conditions within the discharge time following termination of nitrogen injection. This result highlights the need to account for impurity retention for such seeded discharges in exhaust control strategies.

Published
2023

12. Concepts and challenges in the design of a tokamak plasma control system. ITER PCS for First Plasma and beyond

Author

Zabeo, L., De Vries, P., Snipes, J., Ravensbergen, T., Gribov, Y., Raupp, G., Treutterer, W., https://orcid.org/0000-0003-0268-1578, Pironti, A., De Tommasi, G., Cinque, M., Mattei, M., Humphreys, D., Walker, M., Rimini, F., Moreau, P., Nouailletas, R., Zabeo, L., De Vries, P. C., Snipes, J. A., Ravensbergen, T., Gribov, Y., Raupp, G., Treutterer, W., Pironti, A., De Tommasi, G., Cinque, M., Mattei, M., Humphreys, D., Walker, M., Rimini, F., Moreau, P., and Nouailletas, R.

Abstract

Electricity production through the control of nuclear fusion reactions is a promising option to meet the increasing demand for clean energy sources. The magnetically confined approach based on the tokamak is presently investigated through the international ITER project. ITER is the largest fusion development project aimed at demonstrating the capability of generating 500MW of fusion power with an input of 50MW (Q=10) for long durations (> 5 min) by controlling fusion reactions. The project requires a multidisciplinary development approach from materials to cooling system and, of course, control. The high temperature plasmas generated in a tokamak require continuous control to guarantee the achievement and sustainment of the required performance to demonstrate a high fusion energy gain. This requires an integrated set of controls with multiple inputs and multiple outputs, sharing the available actuators supported by an effective system to avoid, where possible, conditions that could ultimately, compromise the integrity of the device. This role is in the scope of the Plasma Control System (PCS). A lot of experience has been already gained from present fusion devices, but the scale of ITER and future reactors requires further developments in the field. The control in ITER is similar to other devices, but more complexity is required by the new physics to be explored in ITER scenarios, the robustness against larger loads (e.g. high neutron flux rate) and the systematic application of multiple controls sharing resources or by narrow operational spaces/proximity to instability boundaries associated with high Q operation. Moreover, the design of the PCS requires a model-based approach, considering that the machine for which it is designed is under construction. On the other hand, while the control schemes will be validated through simulations ahead of operation, the PCS will only be fully tested and commissioned through ITER operation itself. In this paper, an overview of a PCS and its design is presented followed by recent development targeting the ITER PCS for First Plasma and future operations. Constraints, limitations and challenges will be illustrated and the adopted solutions presented.

Published
2022

13. Millimeter-wave beam scattering and induced broadening by plasma turbulence in the TCV tokamak

Author

Chellai, O, Alberti, S, Furno, I, Goodman, T, Maj, O, Merlo, G, Poli, E, Ricci, P, Riva, F, Weber, H, Coda, S, Agostini, M, Albanese, R, Alessi, E, Allan, S, Allcock, J, Ambrosino, R, Anand, H, Andrebe, Y, Arnichand, H, Auriemma, F, Ayllon-Guerola, J, Bagnato, F, Ball, J, Baquero-Ruiz, M, Beletskii, A, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Bogar, O, Bolzonella, T, Bombarda, F, Bonanomi, N, Bouquey, F, Bowman, C, Brida, D, Bucalossi, J, Buermans, J, Bufferand, H, Buratti, P, Calabro, G, Calacci, L, Camenen, Y, Carnevale, D, Carpanese, F, Carr, M, Carraro, L, Casolari, A, Causa, F, Cerovsky, J, Chmielewski, P, Choi, D, Christen, N, Ciraolo, G, Cordaro, L, Costea, S, Cruz, N, Czarnecka, A, Dal Molin, A, David, P, Decker, J, De Oliveira, H, Douai, D, Dreval, M, Dudson, B, Dunne, M, Duval, B, Eich, T, Elmore, S, Embreus, O, Esposito, B, Faitsch, M, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferro, G, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Frassinetti, L, Gahle, D, Galassi, D, Galazka, K, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Munoz, M, Garrido, A, Garrido, I, Gath, J, Geiger, B, Giruzzi, G, Gobbin, M, Gorini, G, Gospodarczyk, M, Granucci, G, Graves, J, Gruca, M, Gyergyek, T, Hakola, A, Happel, T, Harrer, G, Harrison, J, Havlickova, E, Hawke, J, Henderson, S, Hennequin, P, Hesslow, L, Hogeweij, D, Hogge, J, Hopf, C, Hoppe, M, Horacek, J, Huang, Z, Hubbard, A, Iantchenko, A, Igochine, V, Innocente, P, Ionita Schrittwieser, C, Isliker, H, Jacquier, R, Jardin, A, Kappatou, A, Karpushov, A, Kazantzidis, P, Keeling, D, Kirneva, N, Komm, M, Kong, M, Kovacic, J, Krawczyk, N, Kudlacek, O, Kurki-Suonio, T, Kwiatkowski, R, Labit, B, Lazzaro, E, Linehan, B, Lipschultz, B, Llobet, X, Lombroni, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maljaars, E, Mantica, P, Maraschek, M, Marchetto, C, Marco, A, Mariani, A, Marini, C, Martin, Y, Matos, F, Maurizio, R, Mavkov, B, Mazon, D, Mccarthy, P, Mcdermott, R, Menkovski, V, Merle, A, Meyer, H, Micheletti, D, Militello, F, Mitosinkova, K, Mlynar, J, Moiseenko, V, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Mumgaard, R, Naulin, V, Nem, R, Nespoli, F, Nielsen, A, Nielsen, S, Nocente, M, Nowak, S, Offeddu, N, Orsitto, F, Paccagnella, R, Palha, A, Papp, G, Pau, A, Pavlichenko, R, Perek, A, Pericoli Ridolfini, V, Pesamosca, F, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Plyusnin, V, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rabinski, M, Juul Rasmussen, J, Ravensbergen, T, Reich, M, Reimerdes, H, Reimold, F, Reux, C, Ricci, D, Rispoli, N, Rosato, J, Saarelma, S, Salewski, M, Salmi, A, Sauter, O, Scheffer, M, Schlatter, C, Schneider, B, Schrittwieser, R, Sharapov, S, Sheeba, R, Sheikh, U, Shousha, R, Silva, M, Sinha, J, Sozzi, C, Spolaore, M, Stipani, L, Strand, P, Tala, T, Tema Biwole, A, Teplukhina, A, Testa, D, Theiler, C, Thornton, A, Tomaz, G, Tomes, M, Tran, M, Tsironis, C, Tsui, C, Urban, J, Valisa, M, Vallar, M, Van Vugt, D, Vartanian, S, Vasilovici, O, Verhaegh, K, Vermare, L, Vianello, N, Viezzer, E, Vijvers, W, Villone, F, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weisen, H, Wensing, M, Wiesenberger, M, Wilkie, G, Wischmeier, M, Wu, K, Yoshida, M, Zagorski, R, Zanca, P, Zebrowski, J, Zisis, A, Zuin, M, Chellai O., Alberti S., Furno I., Goodman T. P., Maj O., Merlo G., Poli E., Ricci P., Riva F., Weber H., Coda S., Agostini M., Albanese R., Alessi E., Allan S., Allcock J., Ambrosino R., Anand H., Andrebe Y., Arnichand H., Auriemma F., Ayllon-Guerola J. M., Bagnato F., Ball J., Baquero-Ruiz M., Beletskii A. A., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Bogar O., Bolzonella T., Bombarda F., Bonanomi N., Bouquey F., Bowman C., Brida D., Bucalossi J., Buermans J., Bufferand H., Buratti P., Calabro G., Calacci L., Camenen Y., Carnevale D., Carpanese F., Carr M., Carraro L., Casolari A., Causa F., Cerovsky J., Chmielewski P., Choi D., Christen N., Ciraolo G., Cordaro L., Costea S., Cruz N., Czarnecka A., Dal Molin A., David P., Decker J., De Oliveira H., Douai D., Dreval M. B., Dudson B., Dunne M., Duval B. P., Eich T., Elmore S., Embreus O., Esposito B., Faitsch M., Farnik M., Fasoli A., Fedorczak N., Felici F., Feng S., Feng X., Ferro G., Fevrier O., Ficker O., Fil A., Fontana M., Frassinetti L., Gahle D. S., Galassi D., Galazka K., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Munoz M., Garrido A. J., Garrido I., Gath J., Geiger B., Giruzzi G., Gobbin M., Gorini G., Gospodarczyk M., Granucci G., Graves J. P., Gruca M., Gyergyek T., Hakola A., Happel T., Harrer G. F., Harrison J., Havlickova E., Hawke J., Henderson S., Hennequin P., Hesslow L., Hogeweij D., Hogge J. -Ph., Hopf C., Hoppe M., Horacek J., Huang Z., Hubbard A., Iantchenko A., Igochine V., Innocente P., Ionita Schrittwieser C., Isliker H., Jacquier R., Jardin A., Kappatou A., Karpushov A., Kazantzidis P. -V., Keeling D., Kirneva N., Komm M., Kong M., Kovacic J., Krawczyk N., Kudlacek O., Kurki-Suonio T., Kwiatkowski R., Labit B., Lazzaro E., Linehan B., Lipschultz B., Llobet X., Lombroni R., Loschiavo V. P., Lunt T., MacUsova E., Madsen J., Maljaars E., Mantica P., Maraschek M., Marchetto C., Marco A., Mariani A., Marini C., Martin Y., Matos F., Maurizio R., Mavkov B., Mazon D., McCarthy P., McDermott R., Menkovski V., Merle A., Meyer H., Micheletti D., Militello F., Mitosinkova K., Mlynar J., Moiseenko V., Molina Cabrera P. A., Morales J., Moret J. -M., Moro A., Mumgaard R. T., Naulin V., Nem R. D., Nespoli F., Nielsen A. H., Nielsen S. K., Nocente M., Nowak S., Offeddu N., Orsitto F. P., Paccagnella R., Palha A., Papp G., Pau A., Pavlichenko R. O., Perek A., Pericoli Ridolfini V., Pesamosca F., Piergotti V., Pigatto L., Piovesan P., Piron C., Plyusnin V., Porte L., Pucella G., Puiatti M. E., Putterich T., Rabinski M., Juul Rasmussen J., Ravensbergen T., Reich M., Reimerdes H., Reimold F., Reux C., Ricci D., Rispoli N., Rosato J., Saarelma S., Salewski M., Salmi A., Sauter O., Scheffer M., Schlatter Ch., Schneider B. S., Schrittwieser R., Sharapov S., Sheeba R. R., Sheikh U., Shousha R., Silva M., Sinha J., Sozzi C., Spolaore M., Stipani L., Strand P., Tala T., Tema Biwole A. S., Teplukhina A. A., Testa D., Theiler C., Thornton A., Tomaz G., Tomes M., Tran M. Q., Tsironis C., Tsui C. K., Urban J., Valisa M., Vallar M., Van Vugt D., Vartanian S., Vasilovici O., Verhaegh K., Vermare L., Vianello N., Viezzer E., Vijvers W. A. J., Villone F., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weiland M., Weisen H., Wensing M., Wiesenberger M., Wilkie G., Wischmeier M., Wu K., Yoshida M., Zagorski R., Zanca P., Zebrowski J., Zisis A., Zuin M., Chellai, O, Alberti, S, Furno, I, Goodman, T, Maj, O, Merlo, G, Poli, E, Ricci, P, Riva, F, Weber, H, Coda, S, Agostini, M, Albanese, R, Alessi, E, Allan, S, Allcock, J, Ambrosino, R, Anand, H, Andrebe, Y, Arnichand, H, Auriemma, F, Ayllon-Guerola, J, Bagnato, F, Ball, J, Baquero-Ruiz, M, Beletskii, A, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Bogar, O, Bolzonella, T, Bombarda, F, Bonanomi, N, Bouquey, F, Bowman, C, Brida, D, Bucalossi, J, Buermans, J, Bufferand, H, Buratti, P, Calabro, G, Calacci, L, Camenen, Y, Carnevale, D, Carpanese, F, Carr, M, Carraro, L, Casolari, A, Causa, F, Cerovsky, J, Chmielewski, P, Choi, D, Christen, N, Ciraolo, G, Cordaro, L, Costea, S, Cruz, N, Czarnecka, A, Dal Molin, A, David, P, Decker, J, De Oliveira, H, Douai, D, Dreval, M, Dudson, B, Dunne, M, Duval, B, Eich, T, Elmore, S, Embreus, O, Esposito, B, Faitsch, M, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferro, G, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Frassinetti, L, Gahle, D, Galassi, D, Galazka, K, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Munoz, M, Garrido, A, Garrido, I, Gath, J, Geiger, B, Giruzzi, G, Gobbin, M, Gorini, G, Gospodarczyk, M, Granucci, G, Graves, J, Gruca, M, Gyergyek, T, Hakola, A, Happel, T, Harrer, G, Harrison, J, Havlickova, E, Hawke, J, Henderson, S, Hennequin, P, Hesslow, L, Hogeweij, D, Hogge, J, Hopf, C, Hoppe, M, Horacek, J, Huang, Z, Hubbard, A, Iantchenko, A, Igochine, V, Innocente, P, Ionita Schrittwieser, C, Isliker, H, Jacquier, R, Jardin, A, Kappatou, A, Karpushov, A, Kazantzidis, P, Keeling, D, Kirneva, N, Komm, M, Kong, M, Kovacic, J, Krawczyk, N, Kudlacek, O, Kurki-Suonio, T, Kwiatkowski, R, Labit, B, Lazzaro, E, Linehan, B, Lipschultz, B, Llobet, X, Lombroni, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maljaars, E, Mantica, P, Maraschek, M, Marchetto, C, Marco, A, Mariani, A, Marini, C, Martin, Y, Matos, F, Maurizio, R, Mavkov, B, Mazon, D, Mccarthy, P, Mcdermott, R, Menkovski, V, Merle, A, Meyer, H, Micheletti, D, Militello, F, Mitosinkova, K, Mlynar, J, Moiseenko, V, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Mumgaard, R, Naulin, V, Nem, R, Nespoli, F, Nielsen, A, Nielsen, S, Nocente, M, Nowak, S, Offeddu, N, Orsitto, F, Paccagnella, R, Palha, A, Papp, G, Pau, A, Pavlichenko, R, Perek, A, Pericoli Ridolfini, V, Pesamosca, F, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Plyusnin, V, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rabinski, M, Juul Rasmussen, J, Ravensbergen, T, Reich, M, Reimerdes, H, Reimold, F, Reux, C, Ricci, D, Rispoli, N, Rosato, J, Saarelma, S, Salewski, M, Salmi, A, Sauter, O, Scheffer, M, Schlatter, C, Schneider, B, Schrittwieser, R, Sharapov, S, Sheeba, R, Sheikh, U, Shousha, R, Silva, M, Sinha, J, Sozzi, C, Spolaore, M, Stipani, L, Strand, P, Tala, T, Tema Biwole, A, Teplukhina, A, Testa, D, Theiler, C, Thornton, A, Tomaz, G, Tomes, M, Tran, M, Tsironis, C, Tsui, C, Urban, J, Valisa, M, Vallar, M, Van Vugt, D, Vartanian, S, Vasilovici, O, Verhaegh, K, Vermare, L, Vianello, N, Viezzer, E, Vijvers, W, Villone, F, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weisen, H, Wensing, M, Wiesenberger, M, Wilkie, G, Wischmeier, M, Wu, K, Yoshida, M, Zagorski, R, Zanca, P, Zebrowski, J, Zisis, A, Zuin, M, Chellai O., Alberti S., Furno I., Goodman T. P., Maj O., Merlo G., Poli E., Ricci P., Riva F., Weber H., Coda S., Agostini M., Albanese R., Alessi E., Allan S., Allcock J., Ambrosino R., Anand H., Andrebe Y., Arnichand H., Auriemma F., Ayllon-Guerola J. M., Bagnato F., Ball J., Baquero-Ruiz M., Beletskii A. A., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Bogar O., Bolzonella T., Bombarda F., Bonanomi N., Bouquey F., Bowman C., Brida D., Bucalossi J., Buermans J., Bufferand H., Buratti P., Calabro G., Calacci L., Camenen Y., Carnevale D., Carpanese F., Carr M., Carraro L., Casolari A., Causa F., Cerovsky J., Chmielewski P., Choi D., Christen N., Ciraolo G., Cordaro L., Costea S., Cruz N., Czarnecka A., Dal Molin A., David P., Decker J., De Oliveira H., Douai D., Dreval M. B., Dudson B., Dunne M., Duval B. P., Eich T., Elmore S., Embreus O., Esposito B., Faitsch M., Farnik M., Fasoli A., Fedorczak N., Felici F., Feng S., Feng X., Ferro G., Fevrier O., Ficker O., Fil A., Fontana M., Frassinetti L., Gahle D. S., Galassi D., Galazka K., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Munoz M., Garrido A. J., Garrido I., Gath J., Geiger B., Giruzzi G., Gobbin M., Gorini G., Gospodarczyk M., Granucci G., Graves J. P., Gruca M., Gyergyek T., Hakola A., Happel T., Harrer G. F., Harrison J., Havlickova E., Hawke J., Henderson S., Hennequin P., Hesslow L., Hogeweij D., Hogge J. -Ph., Hopf C., Hoppe M., Horacek J., Huang Z., Hubbard A., Iantchenko A., Igochine V., Innocente P., Ionita Schrittwieser C., Isliker H., Jacquier R., Jardin A., Kappatou A., Karpushov A., Kazantzidis P. -V., Keeling D., Kirneva N., Komm M., Kong M., Kovacic J., Krawczyk N., Kudlacek O., Kurki-Suonio T., Kwiatkowski R., Labit B., Lazzaro E., Linehan B., Lipschultz B., Llobet X., Lombroni R., Loschiavo V. P., Lunt T., MacUsova E., Madsen J., Maljaars E., Mantica P., Maraschek M., Marchetto C., Marco A., Mariani A., Marini C., Martin Y., Matos F., Maurizio R., Mavkov B., Mazon D., McCarthy P., McDermott R., Menkovski V., Merle A., Meyer H., Micheletti D., Militello F., Mitosinkova K., Mlynar J., Moiseenko V., Molina Cabrera P. A., Morales J., Moret J. -M., Moro A., Mumgaard R. T., Naulin V., Nem R. D., Nespoli F., Nielsen A. H., Nielsen S. K., Nocente M., Nowak S., Offeddu N., Orsitto F. P., Paccagnella R., Palha A., Papp G., Pau A., Pavlichenko R. O., Perek A., Pericoli Ridolfini V., Pesamosca F., Piergotti V., Pigatto L., Piovesan P., Piron C., Plyusnin V., Porte L., Pucella G., Puiatti M. E., Putterich T., Rabinski M., Juul Rasmussen J., Ravensbergen T., Reich M., Reimerdes H., Reimold F., Reux C., Ricci D., Rispoli N., Rosato J., Saarelma S., Salewski M., Salmi A., Sauter O., Scheffer M., Schlatter Ch., Schneider B. S., Schrittwieser R., Sharapov S., Sheeba R. R., Sheikh U., Shousha R., Silva M., Sinha J., Sozzi C., Spolaore M., Stipani L., Strand P., Tala T., Tema Biwole A. S., Teplukhina A. A., Testa D., Theiler C., Thornton A., Tomaz G., Tomes M., Tran M. Q., Tsironis C., Tsui C. K., Urban J., Valisa M., Vallar M., Van Vugt D., Vartanian S., Vasilovici O., Verhaegh K., Vermare L., Vianello N., Viezzer E., Vijvers W. A. J., Villone F., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weiland M., Weisen H., Wensing M., Wiesenberger M., Wilkie G., Wischmeier M., Wu K., Yoshida M., Zagorski R., Zanca P., Zebrowski J., Zisis A., and Zuin M.

Abstract

The scattering of millimeter-wave beams from electron density fluctuations and the associated beam broadening are experimentally demonstrated. Using a dedicated setup, instantaneous deflection and (de-)focusing of the beam due to density blobs on the beam path are shown to agree with full-wave simulations. The detected time-averaged wave power transmitted through the turbulent plasma is reproduced by the radiative-transfer model implemented in the WKBeam code, which predicts a ∼50% turbulence-induced broadening of the beam cross-section. The role of core turbulence for the considered geometry is highlighted.

Published
2021

14. Cherenkov probes and runaway electrons diagnostics

Author

Kwiatkowski, R, Rabinski, M, Sadowski, M, Zebrowski, J, Karpinski, P, Coda, S, Agostini, M, Albanese, R, Alberti, S, Alessi, E, Allan, S, Allcock, J, Ambrosino, R, Anand, H, Andrebe, Y, Arnichand, H, Auriemma, F, Ayllon-Guerola, J, Bagnato, F, Ball, J, Baquero-Ruiz, M, Beletskii, A, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Bogar, O, Bolzonella, T, Bombarda, F, Bonanomi, N, Bouquey, F, Bowman, C, Brida, D, Bucalossi, J, Buermans, J, Bufferand, H, Buratti, P, Calabro, G, Calacci, L, Camenen, Y, Carnevale, D, Carpanese, F, Carr, M, Carraro, L, Casolari, A, Causa, F, Cerovsky, J, Chellai, O, Chmielewski, P, Choi, D, Christen, N, Ciraolo, G, Cordaro, L, Costea, S, Cruz, N, Czarnecka, A, Molin, A, David, P, Decker, J, De Oliveira, H, Douai, D, Dreval, M, Dudson, B, Dunne, M, Duval, B, Eich, T, Elmore, S, Embreus, O, Esposito, B, Faitsch, M, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferro, G, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Munoz, M, Garrido, A, Garrido, I, Gath, J, Geiger, B, Giruzzi, G, Gobbin, M, Goodman, T, Gorini, G, Gospodarczyk, M, Granucci, G, Graves, J, Gruca, M, Gyergyek, T, Hakola, A, Happel, T, Harrer, G, Harrison, J, Havlickova, E, Hawke, J, Henderson, S, Hennequin, P, Hesslow, L, Hogeweij, D, Hogge, J, Hopf, C, Hoppe, M, Horacek, J, Huang, Z, Hubbard, A, Iantchenko, A, Igochine, V, Innocente, P, Schrittwieser, C, Isliker, H, Jacquier, R, Jardin, A, Kappatou, A, Karpushov, A, Kazantzidis, P, Keeling, D, Kirneva, N, Komm, M, Kong, M, Kovacic, J, Krawczyk, N, Kudlacek, O, Kurki-Suonio, T, Labit, B, Lazzaro, E, Linehan, B, Lipschultz, B, Llobet, X, Lombroni, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maljaars, E, Mantica, P, Maraschek, M, Marchetto, C, Marco, A, Mariani, A, Marini, C, Martin, Y, Matos, F, Maurizio, R, Mavkov, B, Mazon, D, Mccarthy, P, Mcdermott, R, Menkovski, V, Merle, A, Meyer, H, Micheletti, D, Militello, F, Mitosinkova, K, Mlynar, J, Moiseenko, V, Cabrera, P, Morales, J, Moret, J, Moro, A, Mumgaard, R, Naulin, V, Nem, R, Nespoli, F, Nielsen, A, Nielsen, S, Nocente, M, Nowak, S, Offeddu, N, Orsitto, F, Paccagnella, R, Palha, A, Papp, G, Pau, A, Pavlichenko, R, Perek, A, Pericoli Ridolfini, V, Pesamosca, F, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Plyusnin, V, Poli, E, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rasmussen, J, Ravensbergen, T, Reich, M, Reimerdes, H, Reimold, F, Reux, C, Ricci, D, Ricci, P, Rispoli, N, Rosato, J, Saarelma, S, Salewski, M, Salmi, A, Sauter, O, Scheffer, M, Schlatter, C, Schneider, B, Schrittwieser, R, Sharapov, S, Sheeba, R, Sheikh, U, Shousha, R, Silva, M, Sinha, J, Sozzi, C, Spolaore, M, Stipani, L, Strand, P, Tala, T, Biwole, A, Teplukhina, A, Testa, D, Theiler, C, Thornton, A, Tomaz, G, Tomes, M, Tran, M, Tsironis, C, Tsui, C, Urban, J, Valisa, M, Vallar, M, Van Vugt, D, Vartanian, S, Vasilovici, O, Verhaegh, K, Vermare, L, Vianello, N, Viezzer, E, Vijvers, W, Villone, F, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weisen, H, Wensing, M, Wiesenberger, M, Wilkie, G, Wischmeier, M, Wu, K, Yoshida, M, Zagorski, R, Zanca, P, Zisis, A, Zuin, M, Kwiatkowski R., Rabinski M., Sadowski M. J., Zebrowski J., Karpinski P., Coda S., Agostini M., Albanese R., Alberti S., Alessi E., Allan S., Allcock J., Ambrosino R., Anand H., Andrebe Y., Arnichand H., Auriemma F., Ayllon-Guerola J. M., Bagnato F., Ball J., Baquero-Ruiz M., Beletskii A. A., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Bogar O., Bolzonella T., Bombarda F., Bonanomi N., Bouquey F., Bowman C., Brida D., Bucalossi J., Buermans J., Bufferand H., Buratti P., Calabro G., Calacci L., Camenen Y., Carnevale D., Carpanese F., Carr M., Carraro L., Casolari A., Causa F., Cerovsky J., Chellai O., Chmielewski P., Choi D., Christen N., Ciraolo G., Cordaro L., Costea S., Cruz N., Czarnecka A., Molin A. D., David P., Decker J., De Oliveira H., Douai D., Dreval M. B., Dudson B., Dunne M., Duval B. P., Eich T., Elmore S., Embreus O., Esposito B., Faitsch M., Farnik M., Fasoli A., Fedorczak N., Felici F., Feng S., Feng X., Ferro G., Fevrier O., Ficker O., Fil A., Fontana M., Frassinetti L., Furno I., Gahle D. S., Galassi D., Galazka K., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Munoz M., Garrido A. J., Garrido I., Gath J., Geiger B., Giruzzi G., Gobbin M., Goodman T. P., Gorini G., Gospodarczyk M., Granucci G., Graves J. P., Gruca M., Gyergyek T., Hakola A., Happel T., Harrer G. F., Harrison J., Havlickova E., Hawke J., Henderson S., Hennequin P., Hesslow L., Hogeweij D., Hogge J. -P., Hopf C., Hoppe M., Horacek J., Huang Z., Hubbard A., Iantchenko A., Igochine V., Innocente P., Schrittwieser C. I., Isliker H., Jacquier R., Jardin A., Kappatou A., Karpushov A., Kazantzidis P. -V., Keeling D., Kirneva N., Komm M., Kong M., Kovacic J., Krawczyk N., Kudlacek O., Kurki-Suonio T., Labit B., Lazzaro E., Linehan B., Lipschultz B., Llobet X., Lombroni R., Loschiavo V. P., Lunt T., Macusova E., Madsen J., Maljaars E., Mantica P., Maraschek M., Marchetto C., Marco A., Mariani A., Marini C., Martin Y., Matos F., Maurizio R., Mavkov B., Mazon D., McCarthy P., McDermott R., Menkovski V., Merle A., Meyer H., Micheletti D., Militello F., Mitosinkova K., Mlynar J., Moiseenko V., Cabrera P. A. M., Morales J., Moret J. -M., Moro A., Mumgaard R. T., Naulin V., Nem R. D., Nespoli F., Nielsen A. H., Nielsen S. K., Nocente M., Nowak S., Offeddu N., Orsitto F. P., Paccagnella R., Palha A., Papp G., Pau A., Pavlichenko R. O., Perek A., Pericoli Ridolfini V., Pesamosca F., Piergotti V., Pigatto L., Piovesan P., Piron C., Plyusnin V., Poli E., Porte L., Pucella G., Puiatti M. E., Putterich T., Rasmussen J. J., Ravensbergen T., Reich M., Reimerdes H., Reimold F., Reux C., Ricci D., Ricci P., Rispoli N., Rosato J., Saarelma S., Salewski M., Salmi A., Sauter O., Scheffer M., Schlatter C., Schneider B. S., Schrittwieser R., Sharapov S., Sheeba R. R., Sheikh U., Shousha R., Silva M., Sinha J., Sozzi C., Spolaore M., Stipani L., Strand P., Tala T., Biwole A. S. T., Teplukhina A. A., Testa D., Theiler C., Thornton A., Tomaz G., Tomes M., Tran M. Q., Tsironis C., Tsui C. K., Urban J., Valisa M., Vallar M., Van Vugt D., Vartanian S., Vasilovici O., Verhaegh K., Vermare L., Vianello N., Viezzer E., Vijvers W. A. J., Villone F., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weiland M., Weisen H., Wensing M., Wiesenberger M., Wilkie G., Wischmeier M., Wu K., Yoshida M., Zagorski R., Zanca P., Zisis A., Zuin M., Kwiatkowski, R, Rabinski, M, Sadowski, M, Zebrowski, J, Karpinski, P, Coda, S, Agostini, M, Albanese, R, Alberti, S, Alessi, E, Allan, S, Allcock, J, Ambrosino, R, Anand, H, Andrebe, Y, Arnichand, H, Auriemma, F, Ayllon-Guerola, J, Bagnato, F, Ball, J, Baquero-Ruiz, M, Beletskii, A, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Bogar, O, Bolzonella, T, Bombarda, F, Bonanomi, N, Bouquey, F, Bowman, C, Brida, D, Bucalossi, J, Buermans, J, Bufferand, H, Buratti, P, Calabro, G, Calacci, L, Camenen, Y, Carnevale, D, Carpanese, F, Carr, M, Carraro, L, Casolari, A, Causa, F, Cerovsky, J, Chellai, O, Chmielewski, P, Choi, D, Christen, N, Ciraolo, G, Cordaro, L, Costea, S, Cruz, N, Czarnecka, A, Molin, A, David, P, Decker, J, De Oliveira, H, Douai, D, Dreval, M, Dudson, B, Dunne, M, Duval, B, Eich, T, Elmore, S, Embreus, O, Esposito, B, Faitsch, M, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferro, G, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Munoz, M, Garrido, A, Garrido, I, Gath, J, Geiger, B, Giruzzi, G, Gobbin, M, Goodman, T, Gorini, G, Gospodarczyk, M, Granucci, G, Graves, J, Gruca, M, Gyergyek, T, Hakola, A, Happel, T, Harrer, G, Harrison, J, Havlickova, E, Hawke, J, Henderson, S, Hennequin, P, Hesslow, L, Hogeweij, D, Hogge, J, Hopf, C, Hoppe, M, Horacek, J, Huang, Z, Hubbard, A, Iantchenko, A, Igochine, V, Innocente, P, Schrittwieser, C, Isliker, H, Jacquier, R, Jardin, A, Kappatou, A, Karpushov, A, Kazantzidis, P, Keeling, D, Kirneva, N, Komm, M, Kong, M, Kovacic, J, Krawczyk, N, Kudlacek, O, Kurki-Suonio, T, Labit, B, Lazzaro, E, Linehan, B, Lipschultz, B, Llobet, X, Lombroni, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maljaars, E, Mantica, P, Maraschek, M, Marchetto, C, Marco, A, Mariani, A, Marini, C, Martin, Y, Matos, F, Maurizio, R, Mavkov, B, Mazon, D, Mccarthy, P, Mcdermott, R, Menkovski, V, Merle, A, Meyer, H, Micheletti, D, Militello, F, Mitosinkova, K, Mlynar, J, Moiseenko, V, Cabrera, P, Morales, J, Moret, J, Moro, A, Mumgaard, R, Naulin, V, Nem, R, Nespoli, F, Nielsen, A, Nielsen, S, Nocente, M, Nowak, S, Offeddu, N, Orsitto, F, Paccagnella, R, Palha, A, Papp, G, Pau, A, Pavlichenko, R, Perek, A, Pericoli Ridolfini, V, Pesamosca, F, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Plyusnin, V, Poli, E, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rasmussen, J, Ravensbergen, T, Reich, M, Reimerdes, H, Reimold, F, Reux, C, Ricci, D, Ricci, P, Rispoli, N, Rosato, J, Saarelma, S, Salewski, M, Salmi, A, Sauter, O, Scheffer, M, Schlatter, C, Schneider, B, Schrittwieser, R, Sharapov, S, Sheeba, R, Sheikh, U, Shousha, R, Silva, M, Sinha, J, Sozzi, C, Spolaore, M, Stipani, L, Strand, P, Tala, T, Biwole, A, Teplukhina, A, Testa, D, Theiler, C, Thornton, A, Tomaz, G, Tomes, M, Tran, M, Tsironis, C, Tsui, C, Urban, J, Valisa, M, Vallar, M, Van Vugt, D, Vartanian, S, Vasilovici, O, Verhaegh, K, Vermare, L, Vianello, N, Viezzer, E, Vijvers, W, Villone, F, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weisen, H, Wensing, M, Wiesenberger, M, Wilkie, G, Wischmeier, M, Wu, K, Yoshida, M, Zagorski, R, Zanca, P, Zisis, A, Zuin, M, Kwiatkowski R., Rabinski M., Sadowski M. J., Zebrowski J., Karpinski P., Coda S., Agostini M., Albanese R., Alberti S., Alessi E., Allan S., Allcock J., Ambrosino R., Anand H., Andrebe Y., Arnichand H., Auriemma F., Ayllon-Guerola J. M., Bagnato F., Ball J., Baquero-Ruiz M., Beletskii A. A., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Bogar O., Bolzonella T., Bombarda F., Bonanomi N., Bouquey F., Bowman C., Brida D., Bucalossi J., Buermans J., Bufferand H., Buratti P., Calabro G., Calacci L., Camenen Y., Carnevale D., Carpanese F., Carr M., Carraro L., Casolari A., Causa F., Cerovsky J., Chellai O., Chmielewski P., Choi D., Christen N., Ciraolo G., Cordaro L., Costea S., Cruz N., Czarnecka A., Molin A. D., David P., Decker J., De Oliveira H., Douai D., Dreval M. B., Dudson B., Dunne M., Duval B. P., Eich T., Elmore S., Embreus O., Esposito B., Faitsch M., Farnik M., Fasoli A., Fedorczak N., Felici F., Feng S., Feng X., Ferro G., Fevrier O., Ficker O., Fil A., Fontana M., Frassinetti L., Furno I., Gahle D. S., Galassi D., Galazka K., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Munoz M., Garrido A. J., Garrido I., Gath J., Geiger B., Giruzzi G., Gobbin M., Goodman T. P., Gorini G., Gospodarczyk M., Granucci G., Graves J. P., Gruca M., Gyergyek T., Hakola A., Happel T., Harrer G. F., Harrison J., Havlickova E., Hawke J., Henderson S., Hennequin P., Hesslow L., Hogeweij D., Hogge J. -P., Hopf C., Hoppe M., Horacek J., Huang Z., Hubbard A., Iantchenko A., Igochine V., Innocente P., Schrittwieser C. I., Isliker H., Jacquier R., Jardin A., Kappatou A., Karpushov A., Kazantzidis P. -V., Keeling D., Kirneva N., Komm M., Kong M., Kovacic J., Krawczyk N., Kudlacek O., Kurki-Suonio T., Labit B., Lazzaro E., Linehan B., Lipschultz B., Llobet X., Lombroni R., Loschiavo V. P., Lunt T., Macusova E., Madsen J., Maljaars E., Mantica P., Maraschek M., Marchetto C., Marco A., Mariani A., Marini C., Martin Y., Matos F., Maurizio R., Mavkov B., Mazon D., McCarthy P., McDermott R., Menkovski V., Merle A., Meyer H., Micheletti D., Militello F., Mitosinkova K., Mlynar J., Moiseenko V., Cabrera P. A. M., Morales J., Moret J. -M., Moro A., Mumgaard R. T., Naulin V., Nem R. D., Nespoli F., Nielsen A. H., Nielsen S. K., Nocente M., Nowak S., Offeddu N., Orsitto F. P., Paccagnella R., Palha A., Papp G., Pau A., Pavlichenko R. O., Perek A., Pericoli Ridolfini V., Pesamosca F., Piergotti V., Pigatto L., Piovesan P., Piron C., Plyusnin V., Poli E., Porte L., Pucella G., Puiatti M. E., Putterich T., Rasmussen J. J., Ravensbergen T., Reich M., Reimerdes H., Reimold F., Reux C., Ricci D., Ricci P., Rispoli N., Rosato J., Saarelma S., Salewski M., Salmi A., Sauter O., Scheffer M., Schlatter C., Schneider B. S., Schrittwieser R., Sharapov S., Sheeba R. R., Sheikh U., Shousha R., Silva M., Sinha J., Sozzi C., Spolaore M., Stipani L., Strand P., Tala T., Biwole A. S. T., Teplukhina A. A., Testa D., Theiler C., Thornton A., Tomaz G., Tomes M., Tran M. Q., Tsironis C., Tsui C. K., Urban J., Valisa M., Vallar M., Van Vugt D., Vartanian S., Vasilovici O., Verhaegh K., Vermare L., Vianello N., Viezzer E., Vijvers W. A. J., Villone F., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weiland M., Weisen H., Wensing M., Wiesenberger M., Wilkie G., Wischmeier M., Wu K., Yoshida M., Zagorski R., Zanca P., Zisis A., and Zuin M.

Abstract

The beams of fast runaway electrons (RE), which are often produced during tokamak discharges, are particularly dangerous and can induce serious damages of the vacuum vessel and internal components of the machine. The proper and fast diagnostics of RE beams is essential for controlling the discharge, e.g., by early mitigation of disruptions and potentially dangerous RE beams. The diagnostics of RE beams is usually based on measurements of the radiation emitted either by these electrons, or as a result of their interactions with plasma and/or vessel walls. Such a radiation is usually recorded by the means of probes placed outside the vacuum vessel. The method developed by our team is based on the probe located inside the vacuum vessel. The probe can be used to detect highly localized RE bunches and to determine their spatial and temporal characteristics. During last few years, the NCBJ team have developed and used the RE diagnostics based on the Cherenkov effect observed in diamond radiators coupled with fast photomultipliers. During the investigated discharges, the probe was inserted into the vacuum vessel, and its head was placed at the plasma edge, where fast RE are expected. A correlation between signals recorded using our probes and other diagnostics, e.g., hard x-ray signals, was also studied. In this paper, we present recent results of the RE measurements by means of Cherenkov probes, which were performed in the COMPASS and TCV tokamaks.

Published
2021

15. Evaluation of ITER divertor shunts as a synthetic diagnostic for detachment control.

Author

Orrico, C.A., Ravensbergen, T., Pitts, R.A., Bonnin, X., Kaveeva, E., Park, J.S., Rozhansky, V., Senichenkov, I., Watts, C., and de Baar, M.

Subjects
*FUSION reactor divertors, *PLASMA boundary layers, *COMPUTATIONAL electromagnetics, *REAL-time control, *ELECTRIC potential measurement, *HEAT flux
Abstract

Reliable diagnostics that measure the detached state of the ITER divertor plasma will be necessary to control heat flux to the divertor targets during steady state, burning plasma operation. This paper conducts an initial exploration into the feasibility of the divertor shunt diagnostic as a lightweight, robust, and real-time detachment sensor. This diagnostic is a set of shunt lead pairs that measure the voltage drop along the divertor cassette body, from which the plasma scrape-off layer (SOL) current is calculated. Using SOLPS-ITER simulations for control-relevant ITER plasma scenarios, the thermoelectric current magnitude along the SOL is shown to decrease significantly with the onset of partial detachment at the outer divertor target. Electromagnetic modelling of a simplified divertor cassette is used to develop a control-oriented inductance-resistance circuit model, from which SOL currents can be calculated from shunt pair voltage measurements. The sensitivity and frequency-response of the resulting system indicates that the diagnostic will accurately measure SOL thermoelectric currents during ITER operation. These currents will be a good measure of the detached state of the divertor plasma, making the divertor shunt diagnostic a potentially extremely valuable and physically robust sensor for real-time detachment control. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Concepts and challenges in the design of a tokamak plasma control system. ITER PCS for First Plasma and beyond

Author

Zabeo, L., primary, De Vries, P.C., additional, Snipes, J. A., additional, Ravensbergen, T., additional, Gribov, Y., additional, Raupp, G., additional, Treutterer, W., additional, Pironti, A., additional, De Tommasi, G., additional, Cinque, M., additional, Mattei, M., additional, Humphreys, D., additional, Walker, M., additional, Rimini, F., additional, Moreau, P., additional, and Nouailletas, R., additional

Published
2022
Full Text
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18. Overview of the TCV tokamak experimental programme

Author

Reimerdes, H., Agostini, M., Alessi, E., Alberti, S., Andrebe, Y., Arnichand, H., Balbin, J., Bagnato, F., Baquero-Ruiz, M., Bernert, M., Bin, W., Blanchard, P., Blanken, T. C., Boedo, J. A., Brida, D., Brunner, S., Bogar, C., Bogar, O., Bolzonella, T., Bombarda, F., Bouquey, F., Bowman, C., Brunetti, D., Buermans, J., Bufferand, H., Calacci, L., Camenen, Y., Carli, S., Carnevale, D., Carpanese, F., Causa, F., Cavalier, J., Cavedon, M., Cazabonne, J. A., Cerovsky, J., Chandra, R., Chandrarajan Jayalekshmi, A., Chellaï, O., Chmielewski, P., Choi, D., Ciraolo, G., Classen, I.G.J., Coda, S., Colandrea, C., Dal Molin, A., David, P., de Baar, M.R., Decker, J., Dekeyser, W., De Oliveira, H., Douai, D., Dreval, M., Dunne, M. G., Duval, B. P., Elmore, S., Embreus, O., Eriksson, F., Faitsch, M., Falchetto, G., Farnik, M., Fasoli, A., Fedorczak, N., Felici, F., Février, O., Ficker, O., Fil, A., Fontana, M., Fransson, E., Frassinetti, L., Furno, I., Gahle, D. S., Galassi, D., Galazka, K., Galperti, C., Garavaglia, S., Garcia-Munoz, M., Geiger, B., Giacomin, M., Giruzzi, G., Gobbin, M., Golfinopoulos, T., Goodman, T., Gorno, S., Granucci, G., Graves, J. P., Griener, M., Gruca, M., Gyergyek, T., Haelterman, R., Hakola, A., Han, W., Happel, T., Harrer, G., Harrison, J. R., Henderson, S., Hogeweij, G. M.D., Hogge, J. P., Hoppe, M., Horacek, J., Huang, Z., Iantchenko, A., Innocente, P., Insulander Björk, K., Ionita-Schrittweiser, C., Isliker, H., Jardin, A., Jaspers, R.J.E., Karimov, R., Karpushov, A. N., Kazakov, Y., Komm, M., Kong, M., Kovacic, J., Krutkin, O., Kudlacek, O., Kumar, U., Kwiatkowski, R., Labit, B., Laguardia, L., Lammers, J.T., Laribi, E., Laszynska, E., Lazaros, A., Linder, O., Linehan, B., Lipschultz, B., Llobet, X., Loizu, J., Lunt, T., Macusova, E., Marandet, Y., Maraschek, M., Marceca, G., Marchetto, C., Marchioni, S., Marmar, E. S., Martin, Y., Martinelli, L., Matos, F., Maurizio, R., Mayoral, M. L., Mazon, D., Menkovski, V., Merle, A., Merlo, G., Meyer, H., Mikszuta-Michalik, K., Molina Cabrera, P. A., Morales, J., Moret, J. M., Moro, A., Moulton, D., Muhammed, H., Myatra, O., Mykytchuk, D., Napoli, F., Nem, R.D., Nielsen, A. H., Nocente, M., Nowak, S., Offeddu, N., Olsen, J., Orsitto, F. P., Pan, O., Papp, G., Pau, A., Perek, A., Pesamosca, F., Peysson, Y., Pigatto, L., Piron, C., Poradzinski, M., Porte, L., Pütterich, T., Rabinski, M., Raj, H., Rasmussen, J. J., Rattá, G. A., Ravensbergen, T., Ricci, D., Ricci, P., Rispoli, N., Riva, F., Rivero-Rodriguez, J. F., Salewski, M., Sauter, O., Schmidt, B. S., Schrittweiser, R., Sharapov, S., Sheikh, U. A., Sieglin, B., Silva, M., Smolders, A., Snicker, A., Sozzi, C., Spolaore, M., Stagni, A., Stipani, L., Sun, G., Tala, T., Tamain, P., Tanaka, K., Tema Biwole, A., Terranova, D., Terry, J. L., Testa, D., Theiler, C., Thornton, A., Thrysøe, A., Torreblanca, H., Tsui, C. K., Vaccaro, D., Vallar, M., van Berkel, M., Van Eester, D., van Kampen, R.J.R., van Mulders, S., Verhaegh, K., Verhaeghe, T., Vianello, N., Villone, F., Viezzer, E., Vincent, B., Voitsekhovitch, I., Vu, N. M.T., Walkden, N., Wauters, T., Weisen, H., Wendler, N., Wensing, M., Widmer, F., Wiesen, S., Wischmeier, M., Wijkamp, T.A., Wünderlich, D., Wüthrich, C., Yanovskiy, V., Zebrowski, J., Reimerdes, H., Agostini, M., Alessi, E., Alberti, S., Andrebe, Y., Arnichand, H., Balbin, J., Bagnato, F., Baquero-Ruiz, M., Bernert, M., Bin, W., Blanchard, P., Blanken, T. C., Boedo, J. A., Brida, D., Brunner, S., Bogar, C., Bogar, O., Bolzonella, T., Bombarda, F., Bouquey, F., Bowman, C., Brunetti, D., Buermans, J., Bufferand, H., Calacci, L., Camenen, Y., Carli, S., Carnevale, D., Carpanese, F., Causa, F., Cavalier, J., Cavedon, M., Cazabonne, J. A., Cerovsky, J., Chandra, R., Chandrarajan Jayalekshmi, A., Chellaï, O., Chmielewski, P., Choi, D., Ciraolo, G., Classen, I.G.J., Coda, S., Colandrea, C., Dal Molin, A., David, P., de Baar, M.R., Decker, J., Dekeyser, W., De Oliveira, H., Douai, D., Dreval, M., Dunne, M. G., Duval, B. P., Elmore, S., Embreus, O., Eriksson, F., Faitsch, M., Falchetto, G., Farnik, M., Fasoli, A., Fedorczak, N., Felici, F., Février, O., Ficker, O., Fil, A., Fontana, M., Fransson, E., Frassinetti, L., Furno, I., Gahle, D. S., Galassi, D., Galazka, K., Galperti, C., Garavaglia, S., Garcia-Munoz, M., Geiger, B., Giacomin, M., Giruzzi, G., Gobbin, M., Golfinopoulos, T., Goodman, T., Gorno, S., Granucci, G., Graves, J. P., Griener, M., Gruca, M., Gyergyek, T., Haelterman, R., Hakola, A., Han, W., Happel, T., Harrer, G., Harrison, J. R., Henderson, S., Hogeweij, G. M.D., Hogge, J. P., Hoppe, M., Horacek, J., Huang, Z., Iantchenko, A., Innocente, P., Insulander Björk, K., Ionita-Schrittweiser, C., Isliker, H., Jardin, A., Jaspers, R.J.E., Karimov, R., Karpushov, A. N., Kazakov, Y., Komm, M., Kong, M., Kovacic, J., Krutkin, O., Kudlacek, O., Kumar, U., Kwiatkowski, R., Labit, B., Laguardia, L., Lammers, J.T., Laribi, E., Laszynska, E., Lazaros, A., Linder, O., Linehan, B., Lipschultz, B., Llobet, X., Loizu, J., Lunt, T., Macusova, E., Marandet, Y., Maraschek, M., Marceca, G., Marchetto, C., Marchioni, S., Marmar, E. S., Martin, Y., Martinelli, L., Matos, F., Maurizio, R., Mayoral, M. L., Mazon, D., Menkovski, V., Merle, A., Merlo, G., Meyer, H., Mikszuta-Michalik, K., Molina Cabrera, P. A., Morales, J., Moret, J. M., Moro, A., Moulton, D., Muhammed, H., Myatra, O., Mykytchuk, D., Napoli, F., Nem, R.D., Nielsen, A. H., Nocente, M., Nowak, S., Offeddu, N., Olsen, J., Orsitto, F. P., Pan, O., Papp, G., Pau, A., Perek, A., Pesamosca, F., Peysson, Y., Pigatto, L., Piron, C., Poradzinski, M., Porte, L., Pütterich, T., Rabinski, M., Raj, H., Rasmussen, J. J., Rattá, G. A., Ravensbergen, T., Ricci, D., Ricci, P., Rispoli, N., Riva, F., Rivero-Rodriguez, J. F., Salewski, M., Sauter, O., Schmidt, B. S., Schrittweiser, R., Sharapov, S., Sheikh, U. A., Sieglin, B., Silva, M., Smolders, A., Snicker, A., Sozzi, C., Spolaore, M., Stagni, A., Stipani, L., Sun, G., Tala, T., Tamain, P., Tanaka, K., Tema Biwole, A., Terranova, D., Terry, J. L., Testa, D., Theiler, C., Thornton, A., Thrysøe, A., Torreblanca, H., Tsui, C. K., Vaccaro, D., Vallar, M., van Berkel, M., Van Eester, D., van Kampen, R.J.R., van Mulders, S., Verhaegh, K., Verhaeghe, T., Vianello, N., Villone, F., Viezzer, E., Vincent, B., Voitsekhovitch, I., Vu, N. M.T., Walkden, N., Wauters, T., Weisen, H., Wendler, N., Wensing, M., Widmer, F., Wiesen, S., Wischmeier, M., Wijkamp, T.A., Wünderlich, D., Wüthrich, C., Yanovskiy, V., and Zebrowski, J.

Abstract

The tokamak à configuration variable (TCV) continues to leverage its unique shaping capabilities, flexible heating systems and modern control system to address critical issues in preparation for ITER and a fusion power plant. For the 2019-20 campaign its configurational flexibility has been enhanced with the installation of removable divertor gas baffles, its diagnostic capabilities with an extensive set of upgrades and its heating systems with new dual frequency gyrotrons. The gas baffles reduce coupling between the divertor and the main chamber and allow for detailed investigations on the role of fuelling in general and, together with upgraded boundary diagnostics, test divertor and edge models in particular. The increased heating capabilities broaden the operational regime to include Te/Ti ∼1 and have stimulated refocussing studies from L-mode to H-mode across a range of research topics. ITER baseline parameters were reached in type-I ELMy H-modes and alternative regimes with 'small' (or no) ELMs explored. Most prominently, negative triangularity was investigated in detail and confirmed as an attractive scenario with H-mode level core confinement but an L-mode edge. Emphasis was also placed on control, where an increased number of observers, actuators and control solutions became available and are now integrated into a generic control framework as will be needed in future devices. The quantity and quality of results of the 2019-20 TCV campaign are a testament to its successful integration within the European research effort alongside a vibrant domestic programme and international collaborations.

Published
2022

20. A spectroscopic inference and SOLPS-ITER comparison of flux-resolved edge plasma parameters in detachment experiments on TCV

Author

Perek, A., Wensing, M., Verhaegh, K., Linehan, B.L., Reimerdes, H., Bowman, C., van Berkel, M., Classen, I.G.J., Duval, B.P., Février, O., Koenders, J.T.W., Ravensbergen, T., Theiler, C., de Baar, M.R., Perek, A., Wensing, M., Verhaegh, K., Linehan, B.L., Reimerdes, H., Bowman, C., van Berkel, M., Classen, I.G.J., Duval, B.P., Février, O., Koenders, J.T.W., Ravensbergen, T., Theiler, C., and de Baar, M.R.

Abstract

This work presents the use of a collisional-radiative model to infer plasma parameters from 2D emissivities of several deuterium Balmer lines. The emissivities were obtained by MANTIS, an absolutely calibrated, ten-camera imaging polychromator with <5mm spatial resolution, up to 800 Hz frame rate, viewing the lower divertor tangentially. Our analysis of those image frames generates 2D maps of plasma parameters such as electron density, temperature, neutral atomic density and the reaction rates for ionisation, recombination and charge exchange as a function of time. The analysis is compared and validated against a SOLPS-ITER simulation accounting for drifts. The results are compared against the simulation in 2D, radial and poloidal profiles to probe the numerous effects of particle transport in the scrape-off layer, in particular in the approach to detached divertor leg conditions. The inferred inner divertor leg radial profiles of the electron density and temperature were consistent with the SOLPS-ITER predictions. A significant transport of particles to the private flux region is found experimentally, that is not captured in the simulation. The simulation diverges from the experiment at the outer divertor target, where the plasma emission appears to be consistent with the emission driven by plasma-molecule interactions. Our analysis also shows prospects for aiding the power exhaust control efforts by potentially providing an optical tracking of the particle balance in the divertor.

Published
2022

21. Overview of the TCV tokamak experimental programme

Author

Reimerdes, H., primary, Agostini, M., additional, Alessi, E., additional, Alberti, S., additional, Andrebe, Y., additional, Arnichand, H., additional, Balbin, J., additional, Bagnato, F., additional, Baquero-Ruiz, M., additional, Bernert, M., additional, Bin, W., additional, Blanchard, P., additional, Blanken, T.C., additional, Boedo, J.A., additional, Brida, D., additional, Brunner, S., additional, Bogar, C., additional, Bogar, O., additional, Bolzonella, T., additional, Bombarda, F., additional, Bouquey, F., additional, Bowman, C., additional, Brunetti, D., additional, Buermans, J., additional, Bufferand, H., additional, Calacci, L., additional, Camenen, Y., additional, Carli, S., additional, Carnevale, D., additional, Carpanese, F., additional, Causa, F., additional, Cavalier, J., additional, Cavedon, M., additional, Cazabonne, J.A., additional, Cerovsky, J., additional, Chandra, R., additional, Chandrarajan Jayalekshmi, A., additional, Chellaï, O., additional, Chmielewski, P., additional, Choi, D., additional, Ciraolo, G., additional, Classen, I.G.J., additional, Coda, S., additional, Colandrea, C., additional, Dal Molin, A., additional, David, P., additional, de Baar, M.R., additional, Decker, J., additional, Dekeyser, W., additional, de Oliveira, H., additional, Douai, D., additional, Dreval, M., additional, Dunne, M.G., additional, Duval, B.P., additional, Elmore, S., additional, Embreus, O., additional, Eriksson, F., additional, Faitsch, M., additional, Falchetto, G., additional, Farnik, M., additional, Fasoli, A., additional, Fedorczak, N., additional, Felici, F., additional, Février, O., additional, Ficker, O., additional, Fil, A., additional, Fontana, M., additional, Fransson, E., additional, Frassinetti, L., additional, Furno, I., additional, Gahle, D.S., additional, Galassi, D., additional, Galazka, K., additional, Galperti, C., additional, Garavaglia, S., additional, Garcia-Munoz, M., additional, Geiger, B., additional, Giacomin, M., additional, Giruzzi, G., additional, Gobbin, M., additional, Golfinopoulos, T., additional, Goodman, T., additional, Gorno, S., additional, Granucci, G., additional, Graves, J.P., additional, Griener, M., additional, Gruca, M., additional, Gyergyek, T., additional, Haelterman, R., additional, Hakola, A., additional, Han, W., additional, Happel, T., additional, Harrer, G., additional, Harrison, J.R., additional, Henderson, S., additional, Hogeweij, G.M.D., additional, Hogge, J.-P., additional, Hoppe, M., additional, Horacek, J., additional, Huang, Z., additional, Iantchenko, A., additional, Innocente, P., additional, Insulander Björk, K., additional, Ionita-Schrittweiser, C., additional, Isliker, H., additional, Jardin, A., additional, Jaspers, R.J.E., additional, Karimov, R., additional, Karpushov, A.N., additional, Kazakov, Y., additional, Komm, M., additional, Kong, M., additional, Kovacic, J., additional, Krutkin, O., additional, Kudlacek, O., additional, Kumar, U., additional, Kwiatkowski, R., additional, Labit, B., additional, Laguardia, L., additional, Lammers, J.T., additional, Laribi, E., additional, Laszynska, E., additional, Lazaros, A., additional, Linder, O., additional, Linehan, B., additional, Lipschultz, B., additional, Llobet, X., additional, Loizu, J., additional, Lunt, T., additional, Macusova, E., additional, Marandet, Y., additional, Maraschek, M., additional, Marceca, G., additional, Marchetto, C., additional, Marchioni, S., additional, Marmar, E.S., additional, Martin, Y., additional, Martinelli, L., additional, Matos, F., additional, Maurizio, R., additional, Mayoral, M.-L., additional, Mazon, D., additional, Menkovski, V., additional, Merle, A., additional, Merlo, G., additional, Meyer, H., additional, Mikszuta-Michalik, K., additional, Molina Cabrera, P.A., additional, Morales, J., additional, Moret, J.-M., additional, Moro, A., additional, Moulton, D., additional, Muhammed, H., additional, Myatra, O., additional, Mykytchuk, D., additional, Napoli, F., additional, Nem, R.D., additional, Nielsen, A.H., additional, Nocente, M., additional, Nowak, S., additional, Offeddu, N., additional, Olsen, J., additional, Orsitto, F.P., additional, Pan, O., additional, Papp, G., additional, Pau, A., additional, Perek, A., additional, Pesamosca, F., additional, Peysson, Y., additional, Pigatto, L., additional, Piron, C., additional, Poradzinski, M., additional, Porte, L., additional, Pütterich, T., additional, Rabinski, M., additional, Raj, H., additional, Rasmussen, J.J., additional, Rattá, G.A., additional, Ravensbergen, T., additional, Ricci, D., additional, Ricci, P., additional, Rispoli, N., additional, Riva, F., additional, Rivero-Rodriguez, J.F., additional, Salewski, M., additional, Sauter, O., additional, Schmidt, B.S., additional, Schrittweiser, R., additional, Sharapov, S., additional, Sheikh, U.A., additional, Sieglin, B., additional, Silva, M., additional, Smolders, A., additional, Snicker, A., additional, Sozzi, C., additional, Spolaore, M., additional, Stagni, A., additional, Stipani, L., additional, Sun, G., additional, Tala, T., additional, Tamain, P., additional, Tanaka, K., additional, Tema Biwole, A., additional, Terranova, D., additional, Terry, J.L., additional, Testa, D., additional, Theiler, C., additional, Thornton, A., additional, Thrysøe, A., additional, Torreblanca, H., additional, Tsui, C.K., additional, Vaccaro, D., additional, Vallar, M., additional, van Berkel, M., additional, Van Eester, D., additional, van Kampen, R.J.R., additional, Van Mulders, S., additional, Verhaegh, K., additional, Verhaeghe, T., additional, Vianello, N., additional, Villone, F., additional, Viezzer, E., additional, Vincent, B., additional, Voitsekhovitch, I., additional, Vu, N.M.T., additional, Walkden, N., additional, Wauters, T., additional, Weisen, H., additional, Wendler, N., additional, Wensing, M., additional, Widmer, F., additional, Wiesen, S., additional, Wischmeier, M., additional, Wijkamp, T.A., additional, Wünderlich, D., additional, Wüthrich, C., additional, Yanovskiy, V., additional, Zebrowski, J., additional, and EUROfusion MST1 Team, the, additional

Published
2022
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22. Overview of the TCV tokamak experimental programme

Author

Reimerdes, H. Agostini, M. Alessi, E. Alberti, S. and Andrebe, Y. Arnichand, H. Balbin, J. Bagnato, F. and Baquero-Ruiz, M. Bernert, M. Bin, W. Blanchard, P. and Blanken, T. C. Boedo, J. A. Brida, D. Brunner, S. Bogar, C. Bogar, O. Bolzonella, T. Bombarda, F. Bouquey, F. and Bowman, C. Brunetti, D. Buermans, J. Bufferand, H. and Calacci, L. Camenen, Y. Carli, S. Carnevale, D. and Carpanese, F. Causa, F. Cavalier, J. Cavedon, M. and Cazabonne, J. A. Cerovsky, J. Chandra, R. Jayalekshmi, A. Chandrarajan Chellai, O. Chmielewski, P. Choi, D. and Ciraolo, G. Classen, I. G. J. Coda, S. Colandrea, C. Dal Molin, A. David, P. de Baar, M. R. Decker, J. Dekeyser, W. de Oliveira, H. Douai, D. Dreval, M. Dunne, M. G. and Duval, B. P. Elmore, S. Embreus, O. Eriksson, F. and Faitsch, M. Falchetto, G. Farnik, M. Fasoli, A. and Fedorczak, N. Felici, F. Fevrier, O. Ficker, O. Fil, A. and Fontana, M. Fransson, E. Frassinetti, L. Furno, I and Gahle, D. S. Galassi, D. Galazka, K. Galperti, C. and Garavaglia, S. Garcia-Munoz, M. Geiger, B. Giacomin, M. and Giruzzi, G. Gobbin, M. Golfinopoulos, T. Goodman, T. and Gorno, S. Granucci, G. Graves, J. P. Griener, M. Gruca, M. Gyergyek, T. Haelterman, R. Hakola, A. Han, W. and Happel, T. Harrer, G. Harrison, J. R. Henderson, S. and Hogeweij, G. M. D. Hogge, J-P Hoppe, M. Horacek, J. and Huang, Z. Iantchenko, A. Innocente, P. Bjork, K. Insulander and Ionita-Schrittweiser, C. Isliker, H. Jardin, A. Jaspers, R. J. E. Karimov, R. Karpushov, A. N. Kazakov, Y. Komm, M. Kong, M. Kovacic, J. Krutkin, O. Kudlacek, O. and Kumar, U. Kwiatkowski, R. Labit, B. Laguardia, L. and Lammers, J. T. Laribi, E. Laszynska, E. Lazaros, A. and Linder, O. Linehan, B. Lipschultz, B. Llobet, X. Loizu, J. Lunt, T. Macusova, E. Marandet, Y. Maraschek, M. and Marceca, G. Marchetto, C. Marchioni, S. Marmar, E. S. and Martin, Y. Martinelli, L. Matos, F. Maurizio, R. and Mayoral, M-L Mazon, D. Menkovski, V Merle, A. Merlo, G. and Meyer, H. Mikszuta-Michalik, K. Cabrera, P. A. Molina and Morales, J. Moret, J-M Moro, A. Moulton, D. Muhammed, H. and Myatra, O. Mykytchuk, D. Napoli, F. Nem, R. D. and Nielsen, A. H. Nocente, M. Nowak, S. Offeddu, N. Olsen, J. Orsitto, F. P. Pan, O. Papp, G. Pau, A. Perek, A. and Pesamosca, F. Peysson, Y. Pigatto, L. Piron, C. and Poradzinski, M. Porte, L. Putterich, T. Rabinski, M. and Raj, H. Rasmussen, J. J. Ratta, G. A. Ravensbergen, T. and Ricci, D. Ricci, P. Rispoli, N. Riva, F. and Rivero-Rodriguez, J. F. Salewski, M. Sauter, O. Schmidt, B. S. Schrittweiser, R. Sharapov, S. Sheikh, U. A. Sieglin, B. Silva, M. Smolders, A. Snicker, A. Sozzi, C. and Spolaore, M. Stagni, A. Stipani, L. Sun, G. Tala, T. and Tamain, P. Tanaka, K. Biwole, A. Tema Terranova, D. and Terry, J. L. Testa, D. Theiler, C. Thornton, A. Thrysoe, A. Torreblanca, H. Tsui, C. K. Vaccaro, D. Vallar, M. and van Berkel, M. Van Eester, D. van Kampen, R. J. R. Van Mulders, S. Verhaegh, K. Verhaeghe, T. Vianello, N. and Villone, F. Viezzer, E. Vincent, B. Voitsekhovitch, I and Vu, N. M. T. Walkden, N. Wauters, T. Weisen, H. Wendler, N. Wensing, M. Widmer, F. Wiesen, S. Wischmeier, M. and Wijkamp, T. A. Wunderlich, D. Wuthrich, C. Yanovskiy, V and Zebrowski, J. EUROfusion MST1 Team

Abstract

The tokamak a configuration variable (TCV) continues to leverage its unique shaping capabilities, flexible heating systems and modern control system to address critical issues in preparation for ITER and a fusion power plant. For the 2019-20 campaign its configurational flexibility has been enhanced with the installation of removable divertor gas baffles, its diagnostic capabilities with an extensive set of upgrades and its heating systems with new dual frequency gyrotrons. The gas baffles reduce coupling between the divertor and the main chamber and allow for detailed investigations on the role of fuelling in general and, together with upgraded boundary diagnostics, test divertor and edge models in particular. The increased heating capabilities broaden the operational regime to include T (e)/T (i) similar to 1 and have stimulated refocussing studies from L-mode to H-mode across a range of research topics. ITER baseline parameters were reached in type-I ELMy H-modes and alternative regimes with `small' (or no) ELMs explored. Most prominently, negative triangularity was investigated in detail and confirmed as an attractive scenario with H-mode level core confinement but an L-mode edge. Emphasis was also placed on control, where an increased number of observers, actuators and control solutions became available and are now integrated into a generic control framework as will be needed in future devices. The quantity and quality of results of the 2019-20 TCV campaign are a testament to its successful integration within the European research effort alongside a vibrant domestic programme and international collaborations.

Published
2022

23. Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade

Author

Labit, B, Eich, T, Harrer, G, Wolfrum, E, Bernert, M, Dunne, M, Frassinetti, L, Hennequin, P, Maurizio, R, Merle, A, Meyer, H, Saarelma, S, Sheikh, U, Adamek, J, Agostini, M, Aguiam, D, Akers, R, Albanese, R, Albert, C, Alessi, E, Ambrosino, R, Andr be, Y, Angioni, C, Apruzzese, G, Aradi, M, Arnichand, H, Auriemma, F, Avdeeva, G, Ayllon-Guerola, J, Bagnato, F, Bandaru, V, Barnes, M, Barrera-Orte, L, Bettini, P, Bilato, R, Biletskyi, O, Bilkova, P, Bin, W, Blanchard, P, Blanken, T, Bobkov, V, Bock, A, Boeyaert, D, Bogar, K, Bogar, O, Bohm, P, Bolzonella, T, Bombarda, F, Boncagni, L, Bouquey, F, Bowman, C, Brezinsek, S, Brida, D, Brunetti, D, Bucalossi, J, Buchanan, J, Buermans, J, Bufferand, H, Buller, S, Buratti, P, Burckhart, A, Calabr, G, Calacci, L, Camenen, Y, Cannas, B, Cano Megias, P, Carnevale, D, Carpanese, F, Carr, M, Carralero, D, Carraro, L, Casolari, A, Cathey, A, Causa, F, Cavedon, M, Cecconello, M, Ceccuzzi, S, Cerovsky, J, Chapman, S, Chmielewski, P, Choi, D, Cianfarani, C, Ciraolo, G, Coda, S, Coelho, R, Colas, L, Colette, D, Cordaro, L, Cordella, F, Costea, S, Coster, D, Cruz Zabala, D, Cseh, G, Czarnecka, A, Cziegler, I, D'Arcangelo, O, Dal Molin, A, David, P, De Carolis, G, De Oliveira, H, Decker, J, Dejarnac, R, Delogu, R, Den Harder, N, Dimitrova, M, Dolizy, F, Dominguez-Palacios Duran, J, Douai, D, Drenik, A, Dreval, M, Dudson, B, Dunai, D, Duval, B, Dux, R, Elmore, S, Embreus, O, Erds, B, Fable, E, Faitsch, M, Fanni, A, Farnik, M, Faust, I, Faustin, J, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferreira, J, Ferr, G, Fevrier, O, Ficker, O, Figini, L, Figueiredo, A, Fil, A, Fontana, M, Francesco, M, Fuchs, C, Futatani, S, Gabellieri, L, Gadariya, D, Gahle, D, Galassi, D, Galazka, K, Galdon-Quiroga, J, Galeani, S, Gallart, D, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Lopez, J, Garcia-Mu oz, M, Garzotti, L, Gath, J, Geiger, B, Giacomelli, L, Giannone, L, Gibson, S, Gil, L, Giovannozzi, E, Giruzzi, G, Gobbin, M, Gonzalez-Martin, J, Goodman, T, Gorini, G, Gospodarczyk, M, Granucci, G, Grekov, D, Grenfell, G, Griener, M, Groth, M, Grover, O, Gruca, M, Gude, A, Guimarais, L, Gyergyek, T, Hacek, P, Hakola, A, Ham, C, Happel, T, Harrison, J, Havranek, A, Hawke, J, Henderson, S, Hesslow, L, Hitzler, F, Hnat, B, Hobirk, J, Hoelzl, M, Hogeweij, D, Hopf, C, Hoppe, M, Horacek, J, Hron, M, Huang, Z, Iantchenko, A, Iglesias, D, Igochine, V, Innocente, P, Ionita-Schrittwieser, C, Isliker, H, Ivanova-Stanik, I, Jacobsen, A, Jakubowski, M, Janky, F, Jardin, A, Jaulmes, F, Jensen, T, Jonsson, T, Kallenbach, A, Kappatou, A, Karpushov, A, Kasilov, S, Kazakov, Y, Kazantzidis, P, Keeling, D, Kelemen, M, Kendl, A, Kernbichler, W, Kirk, A, Kocsis, G, Komm, M, Kong, M, Korovin, V, Koubiti, M, Kovacic, J, Krawczyk, N, Krieger, K, Kripner, L, Krivska, A, Kudlacek, O, Kulyk, Y, Kurki-Suonio, T, Kwiatkowski, R, Laggner, F, Laguardia, L, Lahtinen, A, Lang, P, Likonen, J, Lipschultz, B, Liu, F, Lombroni, R, Lorenzini, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maggiora, R, Maljaars, B, Manas, P, Mantica, P, Mantsinen, M, Manz, P, Maraschek, M, Marchenko, V, Marchetto, C, Mariani, A, Marini, C, Markovic, T, Marrelli, L, Martin, P, Martin Solis, J, Martitsch, A, Mastrostefano, S, Matos, F, Matthews, G, Mayoral, M, Mazon, D, Mazzotta, C, Mc Carthy, P, Mcclements, K, Mcdermott, R, Mcmillan, B, Meineri, C, Menkovski, V, Meshcheriakov, D, Messmer, M, Micheletti, D, Milanesio, D, Militello, F, Miron, I, Mlynar, J, Moiseenko, V, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Moulton, D, Nabais, F, Naulin, V, Naydenkova, D, Nem, R, Nespoli, F, Newton, S, Nielsen, A, Nielsen, S, Nikolaeva, V, Nocente, M, Nowak, S, Oberkofler, M, Ochoukov, R, Ollus, P, Olsen, J, Omotani, J, Ongena, J, Orain, F, Orsitto, F, Paccagnella, R, Palha, A, Panaccione, L, Panek, R, Panjan, M, Papp, G, Paradela Perez, I, Parra, F, Passeri, M, Pau, A, Pautasso, G, Pavlichenko, R, Perek, A, Pericoli Radolfini, V, Pesamosca, F, Peterka, M, Petrzilka, V, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Piron, L, Plyusnin, V, Pokol, G, Poli, E, Poloskei, P, Popov, T, Popovic, Z, Por, G, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rabinski, M, Juul Rasmussen, J, Rasmussen, J, Ratta, G, Ratynskaia, S, Ravensbergen, T, Refy, D, Reich, M, Reimerdes, H, Reimold, F, Reiser, D, Reux, C, Reznik, S, Ricci, D, Rispoli, N, Rivero-Rodriguez, J, Rocchi, G, Rodriguez-Ramos, M, Romano, A, Rosato, J, Rubinacci, G, Rubino, G, Ryan, D, Salewski, M, Salmi, A, Samaddar, D, Sanchis-Sanchez, L, Santos, J, Sarkimaki, K, Sassano, M, Sauter, O, Scannell, R, Scheffer, M, Schneider, B, Schneider, P, Schrittwieser, R, Schubert, M, Seidl, J, Seliunin, E, Sharapov, S, Sheeba, R, Sias, G, Sieglin, B, Silva, C, Sipila, S, Smith, S, Snicker, A, Solano, E, Hansen, S, Soria-Hoyo, C, Sorokovoy, E, Sozzi, C, Sperduti, A, Spizzo, G, Spolaore, M, Stejner, M, Stipani, L, Stober, J, Strand, P, Sun, H, Suttrop, W, Sytnykov, D, Szepesi, T, Tal, B, Tala, T, Tardini, G, Tardocchi, M, Teplukhina, A, Terranova, D, Testa, D, Theiler, C, Thoren, E, Thornton, A, Tilia, B, Tolias, P, Tomes, M, Toscano-Jimenez, M, Tsironis, C, Tsui, C, Tudisco, O, Urban, J, Valisa, M, Vallar, M, Vallejos Olivares, P, Valovic, M, Van Vugt, D, Vanovac, B, Varje, J, Varju, J, Varoutis, S, Vartanian, S, Vasilovici, O, Vega, J, Verdoolaege, G, Verhaegh, K, Vermare, L, Vianello, N, Vicente, J, Viezzer, E, Villone, F, Voitsekhovitch, I, Voltolina, D, Vondracek, P, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weinzettl, V, Wensing, M, Wiesen, S, Wiesenberger, M, Wilkie, G, Willensdorfer, M, Wischmeier, M, Wu, K, Xiang, L, Zagorski, R, Zaloga, D, Zanca, P, Zaplotnik, R, Zebrowski, J, Zhang, W, Zisis, A, Zoletnik, S, Zuin, M, Labit B., Eich T., Harrer G. F., Wolfrum E., Bernert M., Dunne M. G., Frassinetti L., Hennequin P., Maurizio R., Merle A., Meyer H., Saarelma S., Sheikh U., Adamek J., Agostini M., Aguiam D., Akers R., Albanese R., Albert C., Alessi E., Ambrosino R., Andr be Y., Angioni C., Apruzzese G., Aradi M., Arnichand H., Auriemma F., Avdeeva G., Ayllon-Guerola J. M., Bagnato F., Bandaru V. K., Barnes M., Barrera-Orte L., Bettini P., Bilato R., Biletskyi O., Bilkova P., Bin W., Blanchard P., Blanken T., Bobkov V., Bock A., Boeyaert D., Bogar K., Bogar O., Bohm P., Bolzonella T., Bombarda F., Boncagni L., Bouquey F., Bowman C., Brezinsek S., Brida D., Brunetti D., Bucalossi J., Buchanan J., Buermans J., Bufferand H., Buller S., Buratti P., Burckhart A., Calabr G., Calacci L., Camenen Y., Cannas B., Cano Megias P., Carnevale D., Carpanese F., Carr M., Carralero D., Carraro L., Casolari A., Cathey A., Causa F., Cavedon M., Cecconello M., Ceccuzzi S., Cerovsky J., Chapman S., Chmielewski P., Choi D., Cianfarani C., Ciraolo G., Coda S., Coelho R., Colas L., Colette D., Cordaro L., Cordella F., Costea S., Coster D., Cruz Zabala D. J., Cseh G., Czarnecka A., Cziegler I., D'Arcangelo O., Dal Molin A., David P., De Carolis G., De Oliveira H., Decker J., Dejarnac R., Delogu R., Den Harder N., Dimitrova M., Dolizy F., Dominguez-Palacios Duran J. J., Douai D., Drenik A., Dreval M., Dudson B., Dunai D., Duval B. P., Dux R., Elmore S., Embreus O., Erds B., Fable E., Faitsch M., Fanni A., Farnik M., Faust I., Faustin J., Fedorczak N., Felici F., Feng S., Feng X., Ferreira J., Ferr G., Fevrier O., Ficker O., Figini L., Figueiredo A., Fil A., Fontana M., Francesco M., Fuchs C., Futatani S., Gabellieri L., Gadariya D., Gahle D., Galassi D., Galazka K., Galdon-Quiroga J., Galeani S., Gallart D., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Lopez J., Garcia-Mu oz M., Garzotti L., Gath J., Geiger B., Giacomelli L., Giannone L., Gibson S., Gil L., Giovannozzi E., Giruzzi G., Gobbin M., Gonzalez-Martin J., Goodman T. 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Zuin, M, Labit B., Eich T., Harrer G. 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J., Douai D., Drenik A., Dreval M., Dudson B., Dunai D., Duval B. P., Dux R., Elmore S., Embreus O., Erds B., Fable E., Faitsch M., Fanni A., Farnik M., Faust I., Faustin J., Fedorczak N., Felici F., Feng S., Feng X., Ferreira J., Ferr G., Fevrier O., Ficker O., Figini L., Figueiredo A., Fil A., Fontana M., Francesco M., Fuchs C., Futatani S., Gabellieri L., Gadariya D., Gahle D., Galassi D., Galazka K., Galdon-Quiroga J., Galeani S., Gallart D., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Lopez J., Garcia-Mu oz M., Garzotti L., Gath J., Geiger B., Giacomelli L., Giannone L., Gibson S., Gil L., Giovannozzi E., Giruzzi G., Gobbin M., Gonzalez-Martin J., Goodman T. 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P., Paccagnella R., Palha A., Panaccione L., Panek R., Panjan M., Papp G., Paradela Perez I., Parra F., Passeri M., Pau A., Pautasso G., Pavlichenko R., Perek A., Pericoli Radolfini V., Pesamosca F., Peterka M., Petrzilka V., Piergotti V., Pigatto L., Piovesan P., Piron C., Piron L., Plyusnin V., Pokol G., Poli E., Poloskei P., Popov T., Popovic Z., Por G., Porte L., Pucella G., Puiatti M. E., Putterich T., Rabinski M., Juul Rasmussen J., Rasmussen J., Ratta G. A., Ratynskaia S., Ravensbergen T., Refy D., Reich M., Reimerdes H., Reimold F., Reiser D., Reux C., Reznik S., Ricci D., Rispoli N., Rivero-Rodriguez J. F., Rocchi G., Rodriguez-Ramos M., Romano A., Rosato J., Rubinacci G., Rubino G., Ryan D. A., Salewski M., Salmi A., Samaddar D., Sanchis-Sanchez L., Santos J., Sarkimaki K., Sassano M., Sauter O., Scannell R., Scheffer M., Schneider B. S., Schneider P., Schrittwieser R., Schubert M., Seidl J., Seliunin E., Sharapov S., Sheeba R. R., Sias G., Sieglin B., Silva C., Sipila S., Smith S., Snicker A., Solano E. R., Hansen S. K., Soria-Hoyo C., Sorokovoy E., Sozzi C., Sperduti A., Spizzo G., Spolaore M., Stejner M., Stipani L., Stober J., Strand P., Sun H., Suttrop W., Sytnykov D., Szepesi T., Tal B., Tala T., Tardini G., Tardocchi M., Teplukhina A., Terranova D., Testa D., Theiler C., Thoren E., Thornton A., Tilia B., Tolias P., Tomes M., Toscano-Jimenez M., Tsironis C., Tsui C., Tudisco O., Urban J., Valisa M., Vallar M., Vallejos Olivares P., Valovic M., Van Vugt D., Vanovac B., Varje J., Varju J., Varoutis S., Vartanian S., Vasilovici O., Vega J., Verdoolaege G., Verhaegh K., Vermare L., Vianello N., Vicente J., Viezzer E., Villone F., Voitsekhovitch I., Voltolina D., Vondracek P., Vu N. M. T., Walkden N., Wauters T., Weiland M., Weinzettl V., Wensing M., Wiesen S., Wiesenberger M., Wilkie G., Willensdorfer M., Wischmeier M., Wu K., Xiang L., Zagorski R., Zaloga D., Zanca P., Zaplotnik R., Zebrowski J., Zhang W., Zisis A., Zoletnik S., and Zuin M.

Abstract

Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (ne,sep/nG ∼ 0.3), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened.

Published
2019

24. Physics research on the TCV tokamak facility: From conventional to alternative scenarios and beyond

Author

Coda, S, Agostini, M, Albanese, R, Alberti, S, Alessi, E, Allan, S, Allcock, J, Ambrosino, R, Anand, H, Andrebe, Y, Arnichand, H, Auriemma, F, Ayllon-Guerola, J, Bagnato, F, Ball, J, Baquero-Ruiz, M, Beletskii, A, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Bogar, O, Bolzonella, T, Bombarda, F, Bonanomi, N, Bouquey, F, Bowman, C, Brida, D, Bucalossi, J, Buermans, J, Bufferand, H, Buratti, P, Calabro, G, Calacci, L, Camenen, Y, Carnevale, D, Carpanese, F, Carr, M, Carraro, L, Casolari, A, Causa, F, Cerovsky, J, Chellai, O, Chmielewski, P, Choi, D, Christen, N, Ciraolo, G, Cordaro, L, Costea, S, Cruz, N, Czarnecka, A, Dal Molin, A, David, P, Decker, J, De Oliveira, H, Douai, D, Dreval, M, Dudson, B, Dunne, M, Duval, B, Eich, T, Elmore, S, Embreus, O, Esposito, B, Faitsch, M, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferro, G, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Munoz, M, Garrido, A, Garrido, I, Gath, J, Geiger, B, Giruzzi, G, Gobbin, M, Goodman, T, Gorini, G, Gospodarczyk, M, Granucci, G, Graves, J, Gruca, M, Gyergyek, T, Hakola, A, Happel, T, Harrer, G, Harrison, J, Havlickova, E, Hawke, J, Henderson, S, Hennequin, P, Hesslow, L, Hogeweij, D, Hogge, J, Hopf, C, Hoppe, M, Horacek, J, Huang, Z, Hubbard, A, Iantchenko, A, Igochine, V, Innocente, P, Ionita Schrittwieser, C, Isliker, H, Jacquier, R, Jardin, A, Kappatou, A, Karpushov, A, Kazantzidis, P, Keeling, D, Kirneva, N, Komm, M, Kong, M, Kovacic, J, Krawczyk, N, Kudlacek, O, Kurki-Suonio, T, Kwiatkowski, R, Labit, B, Lazzaro, E, Linehan, B, Lipschultz, B, Llobet, X, Lombroni, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maljaars, E, Mantica, P, Maraschek, M, Marchetto, C, Marco, A, Mariani, A, Marini, C, Martin, Y, Matos, F, Frisina, M, Mavkov, B, Mazon, D, Mccarthy, P, Mcdermott, R, Menkovski, V, Merle, A, Meyer, H, Micheletti, D, Militello, F, Mitosinkova, K, Mlynar, J, Moiseenko, V, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Mumgaard, R, Naulin, V, Nem, R, Nespoli, F, Nielsen, A, Nielsen, S, Nocente, M, Nowak, S, Offeddu, N, Orsitto, F, Paccagnella, R, Palha, A, Papp, G, Pau, A, Pavlichenko, R, Perek, A, Pericoli Ridolfini, V, Pesamosca, F, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Plyusnin, V, Poli, E, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rabinski, M, Juul Rasmussen, J, Ravensbergen, T, Reich, M, Reimerdes, H, Reimold, F, Reux, C, Ricci, D, Ricci, P, Rispoli, N, Rosato, J, Saarelma, S, Salewski, M, Salmi, A, Sauter, O, Scheffer, M, Schlatter, C, Schneider, B, Schrittwieser, R, Sharapov, S, Sheeba, R, Sheikh, U, Shousha, R, Silva, M, Sinha, J, Sozzi, C, Spolaore, M, Stipani, L, Strand, P, Tala, T, Tema Biwole, A, Teplukhina, A, Testa, D, Theiler, C, Thornton, A, Tomaz, G, Tomes, M, Tran, M, Tsironis, C, Tsui, C, Urban, J, Valisa, M, Vallar, M, Van Vugt, D, Vartanian, S, Vasilovici, O, Verhaegh, K, Vermare, L, Vianello, N, Viezzer, E, Vijvers, W, Villone, F, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weisen, H, Wensing, M, Wiesenberger, M, Wilkie, G, Wischmeier, M, Wu, K, Yoshida, M, Zagorski, R, Zanca, P, Zebrowski, J, Zisis, A, Zuin, M, Coda S., Agostini M., Albanese R., Alberti S., Alessi E., Allan S., Allcock J., Ambrosino R., Anand H., Andrebe Y., Arnichand H., Auriemma F., Ayllon-Guerola J. M., Bagnato F., Ball J., Baquero-Ruiz M., Beletskii A. A., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Bogar O., Bolzonella T., Bombarda F., Bonanomi N., Bouquey F., Bowman C., Brida D., Bucalossi J., Buermans J., Bufferand H., Buratti P., Calabro G., Calacci L., Camenen Y., Carnevale D., Carpanese F., Carr M., Carraro L., Casolari A., Causa F., Cerovsky J., Chellai O., Chmielewski P., Choi D., Christen N., Ciraolo G., Cordaro L., Costea S., Cruz N., Czarnecka A., Dal Molin A., David P., Decker J., De Oliveira H., Douai D., Dreval M. B., Dudson B., Dunne M., Duval B. P., Eich T., Elmore S., Embreus O., Esposito B., Faitsch M., Farnik M., Fasoli A., Fedorczak N., Felici F., Feng S., Feng X., Ferro G., Fevrier O., Ficker O., Fil A., Fontana M., Frassinetti L., Furno I., Gahle D. S., Galassi D., Galazka K., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Munoz M., Garrido A. J., Garrido I., Gath J., Geiger B., Giruzzi G., Gobbin M., Goodman T. P., Gorini G., Gospodarczyk M., Granucci G., Graves J. P., Gruca M., Gyergyek T., Hakola A., Happel T., Harrer G. F., Harrison J., Havlickova E., Hawke J., Henderson S., Hennequin P., Hesslow L., Hogeweij D., Hogge J. -P., Hopf C., Hoppe M., Horacek J., Huang Z., Hubbard A., Iantchenko A., Igochine V., Innocente P., Ionita Schrittwieser C., Isliker H., Jacquier R., Jardin A., Kappatou A., Karpushov A., Kazantzidis P. -V., Keeling D., Kirneva N., Komm M., Kong M., Kovacic J., Krawczyk N., Kudlacek O., Kurki-Suonio T., Kwiatkowski R., Labit B., Lazzaro E., Linehan B., Lipschultz B., Llobet X., Lombroni R., Loschiavo V. P., Lunt T., Macusova E., Madsen J., Maljaars E., Mantica P., Maraschek M., Marchetto C., Marco A., Mariani A., Marini C., Martin Y., Matos F., FRISINA, MAURIZIO REMO DOMENICO, Mavkov B., Mazon D., McCarthy P., McDermott R., Menkovski V., Merle A., Meyer H., Micheletti D., Militello F., Mitosinkova K., Mlynar J., Moiseenko V., Molina Cabrera P. A., Morales J., Moret J. -M., Moro A., Mumgaard R. T., Naulin V., Nem R. D., Nespoli F., Nielsen A. H., Nielsen S. K., Nocente M., Nowak S., Offeddu N., Orsitto F. P., Paccagnella R., Palha A., Papp G., Pau A., Pavlichenko R. O., Perek A., Pericoli Ridolfini V., Pesamosca F., Piergotti V., Pigatto L., Piovesan P., Piron C., Plyusnin V., Poli E., Porte L., Pucella G., Puiatti M. E., Putterich T., Rabinski M., Juul Rasmussen J., Ravensbergen T., Reich M., Reimerdes H., Reimold F., Reux C., Ricci D., Ricci P., Rispoli N., Rosato J., Saarelma S., Salewski M., Salmi A., Sauter O., Scheffer M., Schlatter C., Schneider B. S., Schrittwieser R., Sharapov S., Sheeba R. R., Sheikh U., Shousha R., SILVA, MARTA, Sinha J., Sozzi C., Spolaore M., Stipani L., Strand P., Tala T., Tema Biwole A. S., Teplukhina A. A., Testa D., Theiler C., Thornton A., Tomaz G., Tomes M., Tran M. Q., Tsironis C., Tsui C. K., Urban J., Valisa M., Vallar M., Van Vugt D., Vartanian S., Vasilovici O., Verhaegh K., Vermare L., Vianello N., Viezzer E., Vijvers W. A. J., Villone F., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weiland M., Weisen H., Wensing M., Wiesenberger M., Wilkie G., Wischmeier M., Wu K., Yoshida M., Zagorski R., Zanca P., Zebrowski J., Zisis A., Zuin M., Coda, S, Agostini, M, Albanese, R, Alberti, S, Alessi, E, Allan, S, Allcock, J, Ambrosino, R, Anand, H, Andrebe, Y, Arnichand, H, Auriemma, F, Ayllon-Guerola, J, Bagnato, F, Ball, J, Baquero-Ruiz, M, Beletskii, A, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Bogar, O, Bolzonella, T, Bombarda, F, Bonanomi, N, Bouquey, F, Bowman, C, Brida, D, Bucalossi, J, Buermans, J, Bufferand, H, Buratti, P, Calabro, G, Calacci, L, Camenen, Y, Carnevale, D, Carpanese, F, Carr, M, Carraro, L, Casolari, A, Causa, F, Cerovsky, J, Chellai, O, Chmielewski, P, Choi, D, Christen, N, Ciraolo, G, Cordaro, L, Costea, S, Cruz, N, Czarnecka, A, Dal Molin, A, David, P, Decker, J, De Oliveira, H, Douai, D, Dreval, M, Dudson, B, Dunne, M, Duval, B, Eich, T, Elmore, S, Embreus, O, Esposito, B, Faitsch, M, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferro, G, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Munoz, M, Garrido, A, Garrido, I, Gath, J, Geiger, B, Giruzzi, G, Gobbin, M, Goodman, T, Gorini, G, Gospodarczyk, M, Granucci, G, Graves, J, Gruca, M, Gyergyek, T, Hakola, A, Happel, T, Harrer, G, Harrison, J, Havlickova, E, Hawke, J, Henderson, S, Hennequin, P, Hesslow, L, Hogeweij, D, Hogge, J, Hopf, C, Hoppe, M, Horacek, J, Huang, Z, Hubbard, A, Iantchenko, A, Igochine, V, Innocente, P, Ionita Schrittwieser, C, Isliker, H, Jacquier, R, Jardin, A, Kappatou, A, Karpushov, A, Kazantzidis, P, Keeling, D, Kirneva, N, Komm, M, Kong, M, Kovacic, J, Krawczyk, N, Kudlacek, O, Kurki-Suonio, T, Kwiatkowski, R, Labit, B, Lazzaro, E, Linehan, B, Lipschultz, B, Llobet, X, Lombroni, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maljaars, E, Mantica, P, Maraschek, M, Marchetto, C, Marco, A, Mariani, A, Marini, C, Martin, Y, Matos, F, Frisina, M, Mavkov, B, Mazon, D, Mccarthy, P, Mcdermott, R, Menkovski, V, Merle, A, Meyer, H, Micheletti, D, Militello, F, Mitosinkova, K, Mlynar, J, Moiseenko, V, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Mumgaard, R, Naulin, V, Nem, R, Nespoli, F, Nielsen, A, Nielsen, S, Nocente, M, Nowak, S, Offeddu, N, Orsitto, F, Paccagnella, R, Palha, A, Papp, G, Pau, A, Pavlichenko, R, Perek, A, Pericoli Ridolfini, V, Pesamosca, F, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Plyusnin, V, Poli, E, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rabinski, M, Juul Rasmussen, J, Ravensbergen, T, Reich, M, Reimerdes, H, Reimold, F, Reux, C, Ricci, D, Ricci, P, Rispoli, N, Rosato, J, Saarelma, S, Salewski, M, Salmi, A, Sauter, O, Scheffer, M, Schlatter, C, Schneider, B, Schrittwieser, R, Sharapov, S, Sheeba, R, Sheikh, U, Shousha, R, Silva, M, Sinha, J, Sozzi, C, Spolaore, M, Stipani, L, Strand, P, Tala, T, Tema Biwole, A, Teplukhina, A, Testa, D, Theiler, C, Thornton, A, Tomaz, G, Tomes, M, Tran, M, Tsironis, C, Tsui, C, Urban, J, Valisa, M, Vallar, M, Van Vugt, D, Vartanian, S, Vasilovici, O, Verhaegh, K, Vermare, L, Vianello, N, Viezzer, E, Vijvers, W, Villone, F, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weisen, H, Wensing, M, Wiesenberger, M, Wilkie, G, Wischmeier, M, Wu, K, Yoshida, M, Zagorski, R, Zanca, P, Zebrowski, J, Zisis, A, Zuin, M, Coda S., Agostini M., Albanese R., Alberti S., Alessi E., Allan S., Allcock J., Ambrosino R., Anand H., Andrebe Y., Arnichand H., Auriemma F., Ayllon-Guerola J. M., Bagnato F., Ball J., Baquero-Ruiz M., Beletskii A. A., Bernert M., Bin W., Blanchard P., Blanken T. C., Boedo J. A., Bogar O., Bolzonella T., Bombarda F., Bonanomi N., Bouquey F., Bowman C., Brida D., Bucalossi J., Buermans J., Bufferand H., Buratti P., Calabro G., Calacci L., Camenen Y., Carnevale D., Carpanese F., Carr M., Carraro L., Casolari A., Causa F., Cerovsky J., Chellai O., Chmielewski P., Choi D., Christen N., Ciraolo G., Cordaro L., Costea S., Cruz N., Czarnecka A., Dal Molin A., David P., Decker J., De Oliveira H., Douai D., Dreval M. B., Dudson B., Dunne M., Duval B. P., Eich T., Elmore S., Embreus O., Esposito B., Faitsch M., Farnik M., Fasoli A., Fedorczak N., Felici F., Feng S., Feng X., Ferro G., Fevrier O., Ficker O., Fil A., Fontana M., Frassinetti L., Furno I., Gahle D. S., Galassi D., Galazka K., Gallo A., Galperti C., Garavaglia S., Garcia J., Garcia-Munoz M., Garrido A. J., Garrido I., Gath J., Geiger B., Giruzzi G., Gobbin M., Goodman T. P., Gorini G., Gospodarczyk M., Granucci G., Graves J. P., Gruca M., Gyergyek T., Hakola A., Happel T., Harrer G. F., Harrison J., Havlickova E., Hawke J., Henderson S., Hennequin P., Hesslow L., Hogeweij D., Hogge J. -P., Hopf C., Hoppe M., Horacek J., Huang Z., Hubbard A., Iantchenko A., Igochine V., Innocente P., Ionita Schrittwieser C., Isliker H., Jacquier R., Jardin A., Kappatou A., Karpushov A., Kazantzidis P. -V., Keeling D., Kirneva N., Komm M., Kong M., Kovacic J., Krawczyk N., Kudlacek O., Kurki-Suonio T., Kwiatkowski R., Labit B., Lazzaro E., Linehan B., Lipschultz B., Llobet X., Lombroni R., Loschiavo V. P., Lunt T., Macusova E., Madsen J., Maljaars E., Mantica P., Maraschek M., Marchetto C., Marco A., Mariani A., Marini C., Martin Y., Matos F., FRISINA, MAURIZIO REMO DOMENICO, Mavkov B., Mazon D., McCarthy P., McDermott R., Menkovski V., Merle A., Meyer H., Micheletti D., Militello F., Mitosinkova K., Mlynar J., Moiseenko V., Molina Cabrera P. A., Morales J., Moret J. -M., Moro A., Mumgaard R. T., Naulin V., Nem R. D., Nespoli F., Nielsen A. H., Nielsen S. K., Nocente M., Nowak S., Offeddu N., Orsitto F. P., Paccagnella R., Palha A., Papp G., Pau A., Pavlichenko R. O., Perek A., Pericoli Ridolfini V., Pesamosca F., Piergotti V., Pigatto L., Piovesan P., Piron C., Plyusnin V., Poli E., Porte L., Pucella G., Puiatti M. E., Putterich T., Rabinski M., Juul Rasmussen J., Ravensbergen T., Reich M., Reimerdes H., Reimold F., Reux C., Ricci D., Ricci P., Rispoli N., Rosato J., Saarelma S., Salewski M., Salmi A., Sauter O., Scheffer M., Schlatter C., Schneider B. S., Schrittwieser R., Sharapov S., Sheeba R. R., Sheikh U., Shousha R., SILVA, MARTA, Sinha J., Sozzi C., Spolaore M., Stipani L., Strand P., Tala T., Tema Biwole A. S., Teplukhina A. A., Testa D., Theiler C., Thornton A., Tomaz G., Tomes M., Tran M. Q., Tsironis C., Tsui C. K., Urban J., Valisa M., Vallar M., Van Vugt D., Vartanian S., Vasilovici O., Verhaegh K., Vermare L., Vianello N., Viezzer E., Vijvers W. A. J., Villone F., Voitsekhovitch I., Vu N. M. T., Walkden N., Wauters T., Weiland M., Weisen H., Wensing M., Wiesenberger M., Wilkie G., Wischmeier M., Wu K., Yoshida M., Zagorski R., Zanca P., Zebrowski J., Zisis A., and Zuin M.

Abstract

The research program of the TCV tokamak ranges from conventional to advanced-tokamak scenarios and alternative divertor configurations, to exploratory plasmas driven by theoretical insight, exploiting the device's unique shaping capabilities. Disruption avoidance by real-time locked mode prevention or unlocking with electron-cyclotron resonance heating (ECRH) was thoroughly documented, using magnetic and radiation triggers. Runaway generation with high-Z noble-gas injection and runaway dissipation by subsequent Ne or Ar injection were studied for model validation. The new 1 MW neutral beam injector has expanded the parameter range, now encompassing ELMy H-modes in an ITER-like shape and nearly noninductive II-mode discharges sustained by electron cyclotron and neutral beam current drive. In the H-mode, the pedestal pressure increases modestly with nitrogen seeding while fueling moves the density pedestal outwards, but the plasma stored energy is largely uncorrelated to either seeding or fueling. High fueling at high triangularity is key to accessing the attractive small edge-localized mode (type-II) regime. Turbulence is reduced in the core at negative triangularity, consistent with increased confinement and in accord with global gyrokinetic simulations. The geodesic acoustic mode, possibly coupled with avalanche events, has been linked with particle flow to the wall in diverted plasmas. Detachment, scrape-off layer transport, and turbulence were studied in L- and H-modes in both standard and alternative configurations (snowflake, super-X, and beyond). The detachment process is caused by power `starvation' reducing the ionization source, with volume recombination playing only a minor role. Partial detachment in the H-mode is obtained with impurity seeding and has shown little dependence on flux expansion in standard single-null geometry. In the attached 1,-mode phase, increasing the outer connection length reduces the in-out heat-flow asymmetry. A doublet plasma, fe

Published
2019

26. Feedback control using divertor multi-spectral imaging diagnostics

Author

Koenders, J.T.W., van Berkel, M., Perek, A., Février, O., Kool, B., Ravensbergen, T., de Baar, M.R., Control Systems Technology, and Science and Technology of Nuclear Fusion

Abstract

The heat and particle exhaust in tokamaks is guided to a dedicated region called the divertor. Unmitigated, the expected power fluxes impacting the divertor targets during reactor relevant operation exceed present-day engineering limits [1]. Real-time feedback control of plasma detachment, a regime characterized by a large reduction in plasma temperature and pressure at the divertor target, is required to maintain a sufficient reduction of these fluxes [2, 3]. During plasma detachment a temperature gradient along the divertor leg is established. This gradient gives rise to a sharp optical emission fall-off, frequently referred to as a front. These fronts are indicative of a local electron temperature, and their location can be used as a measure of detachment strength. A real-time algorithm for detection of these radiation fronts using multi-spectral imaging was recently developed [4], and experimentally demonstrated [5] on the Tokamak à Configuration Variable (TCV) [6] utilizing the multi-spectral imaging diagnostic MANTIS [7]. In this talk, we will show the state-of-the art and further development of using MANTIS for feedback control of the divertor plasma. Including: 1) feedback-control of the C-III emission front using deuterium fueling and the N-II emission front using nitrogen seeding, and 2) the use of system identification techniques to obtain control-oriented models for offline controller design. We conclude with our view towards multi-input, multi-output (MIMO) control of the divertor plasma using MANTIS, fully exploiting its 10 available cameras. Specifically, combining multiple spectrally filtered images to obtain real-time information on the loss processes driving detachment. References [1] R. Pitts et al., Nucl. Mat. Ener. 20, 100696 (2019) [2] B. Lipschultz et al., Nuclear Fusion 56, 056007 (2016) [3] A. Leonard, Plasma Phys. Control. Fusion 60, 044001 (2018) [4] T. Ravensbergen et al., Nucl. Fusion 60, 066017 (2020) [5] T. Ravensbergen et al., Nat. Commun. 12, 1105 (2021) [6] S. Coda et al., Nucl. Fusion 59, 112023 (2019) [7] A. Perek et al., Rev. Sci. Instrum. 90, 123514 (2019)

Published
2021

27. Feedback control using divertor multi-spectral imaging diagnostics

Author

the TCV team, EUROfusion MST1 Team, Koenders, J.T.W., van Berkel, M., Perek, A., Février, O., Kool, B., Ravensbergen, T., de Baar, M.R., the TCV team, EUROfusion MST1 Team, Koenders, J.T.W., van Berkel, M., Perek, A., Février, O., Kool, B., Ravensbergen, T., and de Baar, M.R.

Abstract

The heat and particle exhaust in tokamaks is guided to a dedicated region called the divertor. Unmitigated, the expected power fluxes impacting the divertor targets during reactor relevant operation exceed present-day engineering limits [1]. Real-time feedback control of plasma detachment, a regime characterized by a large reduction in plasma temperature and pressure at the divertor target, is required to maintain a sufficient reduction of these fluxes [2, 3]. During plasma detachment a temperature gradient along the divertor leg is established. This gradient gives rise to a sharp optical emission fall-off, frequently referred to as a front. These fronts are indicative of a local electron temperature, and their location can be used as a measure of detachment strength. A real-time algorithm for detection of these radiation fronts using multi-spectral imaging was recently developed [4], and experimentally demonstrated [5] on the Tokamak à Configuration Variable (TCV) [6] utilizing the multi-spectral imaging diagnostic MANTIS [7]. In this talk, we will show the state-of-the art and further development of using MANTIS for feedback control of the divertor plasma. Including: 1) feedback-control of the C-III emission front using deuterium fueling and the N-II emission front using nitrogen seeding, and 2) the use of system identification techniques to obtain control-oriented models for offline controller design. We conclude with our view towards multi-input, multi-output (MIMO) control of the divertor plasma using MANTIS, fully exploiting its 10 available cameras. Specifically, combining multiple spectrally filtered images to obtain real-time information on the loss processes driving detachment. References [1] R. Pitts et al., Nucl. Mat. Ener. 20, 100696 (2019) [2] B. Lipschultz et al., Nuclear Fusion 56, 056007 (2016) [3] A. Leonard, Plasma Phys. Control. Fusion 60, 044001 (2018) [4] T. Ravensbergen et al.

Published
2021

28. Correcting for non-periodic behaviour in perturbative experiments: application to heat pulse propagation and modulated gas-puff experiments

Author

BERKEL, Matthijs van, KAMPEN, R J R van, VANDERSTEEN, Gerd, Kobayashi, Tatsuya, RAVENSBERGEN, T., IGAMI, Hiroe, LAMMERS, J T, OOSTERWEGEL, G W, GALPERTI, C., FELICI, F, BAAR, M R de, the, LHD experimental group, BERKEL, Matthijs van, KAMPEN, R J R van, VANDERSTEEN, Gerd, Kobayashi, Tatsuya, RAVENSBERGEN, T., IGAMI, Hiroe, LAMMERS, J T, OOSTERWEGEL, G W, GALPERTI, C., FELICI, F, BAAR, M R de, and the, LHD experimental group

Abstract

This paper introduces a recent innovation in dealing with non-periodic behavior often referred to as transients in perturbative experiments. These transients can be the result from the unforced response due to the initial condition and other slow trends in the measurement data and are a source of error when performing and interpreting Fourier spectra. Fourier analysis is particularly relevant in system identification used to build feedback controllers and the analysis of various pulsed experiments such as heat pulse propagation studies. The basic idea behind the methodology is that transients are continuous complex-valued smooth functions in the Fourier domain which can be estimated from the Fourier data. Then, these smooth functions can be subtracted from the data such that only periodic components are retained. The merit of the approach is shown in two experimental examples, i.e. heat pulse propagation (core transport analysis) and radiation front movement due to gas puffing in the divertor. The examples show that the quality of the data is significantly improved such that it allows for new interpretation of the results even for non-ideal measurements., source:M van Berkel et al 2020 Plasma Phys. Control. Fusion 62 094001, source:https://doi.org/10.1088/1361-6587/ab9eaa, identifier:0000-0001-6574-3823

Published
2021

29. Scrape-off layer transport and filament characteristics in high-density tokamak regimes

Author

Vianello, N., Carralero, D., Tsui, C.K., Naulin, V., Agostini, M., Cziegler, I., Labit, B., Theiler, C., Wolfrum, E., Ravensbergen, T., Aguiam, D., Allan, S., Bernert, M., Boedo, J., Costea, S., de Oliveira, H., Février, O., Galdon-Quiroga, J., Grenfell, G., Hakola, A., Ionita, C., Isliker, H., Karpushov, A., Kovacic, J., Lipschultz, B., Maurizio, R., McClements, K., Militello, F., Nielsen, A.H., Olsen, J., Rasmussen, J., Reimerdes, H., Schneider, B., Schrittwieser, R., Seliunin, E., Spolaore, M., Verhaegh, K., Vicente, J., Walkden, N., Zhang, W., Team, ASDEXUpgrade, team, TCV, Team, EUROfusionMST1, ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society, TCV Team, and EUROfusion MST1 Team

Subjects
Nuclear and High Energy Physics, Materials science, Tokamak, SOL, Turbulence, Divertor, turbulence, Magnetic confinement fusion, Cryopump, Condensed Matter Physics, DETACHMENT, 01 natural sciences, 010305 fluids & plasmas, law.invention, Computational physics, ASDEX Upgrade, law, 0103 physical sciences, transport, Electric current, Current (fluid), 010306 general physics, PARTICLE, tokamak, filaments
Abstract

A detailed cross-device investigation on the role of filamentary dynamics in high-density regimes has been performed within the EUROfusion framework, comparing the ASDEX Upgrade (AUG) and TCV tokamaks. Both devices run density ramp experiments at different levels of plasma current, keeping the toroidal field or q 95 constant in order to disentangle the role of the parallel connection length and the current. During the scan at a constant toroidal field, in both devices the scrape-off layer (SOL) profiles tend to develop a clear SOL density shoulder at a lower edge density whenever the current is reduced. Different current behaviour is substantially reconciled in terms of the edge density normalized to the Greenwald fraction. During the scan at constant q 95 AUG exhibits similar behaviour, whereas in TCV no upstream profile modification signature has been observed at lower current levels. The latter behaviour has been ascribed to the lack of target density rollover. The relation between the upstream density profile modification and detachment condition has been investigated. For both devices the relation between blob size and the SOL density e-folding length is found independent of the plasma current, with the observation of a clear increase in blob size and the edge density normalized to a Greenwald fraction. ASDEX Upgrade has also explored filamentary behaviour in the H-mode. The experiments in AUG have focused on the role of neutrals, performing discharges with and without cryogenic pumps, highlighting how high neutral pressure, not only in the divertor but also at the midplane, is needed in order to develop an H-mode SOL profile shoulder in AUG.

Published
2020
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31. MANTIS: A real-time quantitative multispectral imaging system for fusion plasmas

Author

Perek, A., Vijvers, W.A.J., Andrebe, Y., Classen, I.G.J., Duval, B.P., Galperti, C., Harrison, J.R., Linehan, B.L., Ravensbergen, T., Verhaegh, K., de Baar, M.R., Perek, A., Vijvers, W.A.J., Andrebe, Y., Classen, I.G.J., Duval, B.P., Galperti, C., Harrison, J.R., Linehan, B.L., Ravensbergen, T., Verhaegh, K., and de Baar, M.R.

Abstract

This work presents a novel, real-time capable, 10-channel Multispectral Advanced Narrowband Tokamak Imaging System installed on the TCV tokamak, MANTIS. Software and hardware requirements are presented together with the complete system architecture. The image quality of the system is assessed with emphasis on effects resulting from the narrowband interference filters. Some filters are found to create internal reflection images that are correlated with the filters' reflection coefficient. This was measured for selected filters where significant absorption (up to 65% within ∼70 nm of the filter center) was measured. The majority of this was attributed to the filter's design, and several filters' performance is compared. Tailored real-time algorithms exploiting the system's capabilities are presented together with benchmarks comparing polling and event based synchronization. The real-time performance is demonstrated with a density ramp discharge performed on TCV. The behavior of spectral lines' emission from different plasma species and their interpretation are qualitatively described.

Published
2019

32. Physics research on the TCV tokamak facility: from conventional to alternative scenarios and beyond

Author

Coda, S., Agostini, M., Albanese, R., Alberti, S., Alessi, E., Allan, S., Allcock, J., Ambrosino, R., Anand, H., Andrebe, Y., Arnichand, H., Auriemma, F., Ayllon-Guerola, J. M., Bagnato, F., Ball, J., Baquero-Ruiz, M., Beletskii, A. A., Bernert, M., Bin, W., Blanchard, P., Blanken, T.C., Boedo, J.A., Bogar, O., Bolzonella, T., Bombarda, F., Bonanomi, N., Bouquey, F., Bowman, C., Brida, D., Bucalossi, J., Buermans, J., Bufferand, H., Buratti, P., Calabró, G., Calacci, L., Camenen, Y., Carnevale, D., Carpanese, F., Carr, M., Carraro, L., Casolari, A., Causa, F., Čeřovský, J., Chellaï, O., Chmielewski, P., Choi, D., Christen, N., Ciraolo, G., Cordaro, L., Costea, S., Cruz, N., Czarnecka, A., Dal Molin, A., David, P., Decker, J., De Oliveira, H., Douai, D., Dreval, M. B., Dudson, B., Dunne, M., Duval, B. P., Eich, T., Elmore, S., Embréus, O., Esposito, B., Faitsch, M., Farnik, M., Fasoli, A., Fedorczak, N., Felici, F., Feng, S., Feng, X., Ferró, G., Février, O., Ficker, O., Fil, A., Fontana, M., Frassinetti, L., Furno, I., Gahle, D.S., Galassi, D., Gałazka, K., Gallo, A., Galperti, C., Garavaglia, S., Garcia, J., Garcia-Munoz, M., Garrido, A.J., Garrido, I., Gath, J., Geiger, B., Giruzzi, G., Gobbin, M., Goodman, T.P., Gorini, G., Gospodarczyk, M., Granucci, G., Graves, J.P., Gruca, M., Gyergyek, T., Hakola, A., Happel, T., Harrer, G.F., Harrison, J., Havličková, E., Hawke, J., Henderson, S., Hennequin, P., Hesslow, L., Hogeweij, D., Hogge, J.Ph., Hopf, C., Hoppe, M., Horáček, J., Huang, Z., Hubbard, A., Iantchenko, A., Igochine, V., Innocente, P., Ionita Schrittwieser, C., Isliker, H., Jacquier, R., Jardin, A., Kappatou, A., Karpushov, A., Kazantzidis, P.V., Keeling, D., Kirneva, N., Komm, M., Kong, M., Kovacic, J., Krawczyk, N., Kudlacek, O., Kurki-Suonio, T., Kwiatkowski, R., Labit, B., Lazzaro, E., Linehan, B., Lipschultz, B., Llobet, X., Lombroni, R., Loschiavo, V.P., Lunt, T., Macusova, E., Madsen, J., Maljaars, E., Mantica, P., Maraschek, M., Marchetto, C., Marco, A., Mariani, A., Marini, C., Martin, Y., Matos, F., Maurizio, R., Mavkov, B., Mazon, D., McCarthy, P., McDermott, R., Menkovski, V., Merle, A., Meyer, H., Micheletti, D., Militello, F., Mitosinkova, K., Mlynář, J., Moiseenko, V., Molina Cabrera, P.A., Morales, J., Moret, J.M., Moro, A., Mumgaard, R.T., Naulin, V., Nem, R.D., Nespoli, F., Nielsen, A.H., Nielsen, S.K., Nocente, M., Nowak, S., Offeddu, N., Orsitto, F.P., Paccagnella, R., Palha, A., Papp, G., Pau, A., Pavlichenko, R.O., Perek, A., Pericoli Ridolfini, V., Pesamosca, F., Piergotti, V., Pigatto, L., Piovesan, P., Piron, C., Plyusnin, V., Poli, E., Porte, L., Pucella, G., Puiatti, M.E., Pütterich, T., Rabinski, M., Juul Rasmussen, J., Ravensbergen, T., Reich, M., Reimerdes, H., Reimold, F., Reux, C., Ricci, D., Ricci, P., Rispoli, N., Rosato, J., Saarelma, S., Salewski, M., Salmi, A., Sauter, O., Scheffer, M., Schlatter, Ch., Schneider, B.S., Schrittwieser, R., Sharapov, S., Sheeba, R. R., Sheikh, U., Shousha, R., Silva, M., Sinha, J., Sozzi, C., Spolaore, M., Stipani, L., Strand, P., Tala, T., Tema Biwole, A.S., Teplukhina, A. A., Testa, D., Theiler, C., Thornton, A., Tomaž, G., Tomes, M., Tran, M.Q., Tsironis, C., Tsui, C.K., Urban, J., Valisa, M., Vallar, M., van Vugt, D., Vartanian, S., Vasilovici, O., Verhaegh, K., Vermare, L., Vianello, N., Viezzer, E., Vijvers, W.A.J., Villone, F., Voitsekhovitch, I., Vu, N.M.T., Walkden, N., Wauters, T., Weiland, M., Weisen, H., Wensing, M., Wiesenberger, M., Wilkie, G., Wischmeier, M., Wu, K., Yoshida, M., Zagorski, R., Zanca, P., Zebrowski, J., Zisis, A., Zuin, M., Coda, S., Agostini, M., Albanese, R., Alberti, S., Alessi, E., Allan, S., Allcock, J., Ambrosino, R., Anand, H., Andrebe, Y., Arnichand, H., Auriemma, F., Ayllon-Guerola, J. M., Bagnato, F., Ball, J., Baquero-Ruiz, M., Beletskii, A. A., Bernert, M., Bin, W., Blanchard, P., Blanken, T.C., Boedo, J.A., Bogar, O., Bolzonella, T., Bombarda, F., Bonanomi, N., Bouquey, F., Bowman, C., Brida, D., Bucalossi, J., Buermans, J., Bufferand, H., Buratti, P., Calabró, G., Calacci, L., Camenen, Y., Carnevale, D., Carpanese, F., Carr, M., Carraro, L., Casolari, A., Causa, F., Čeřovský, J., Chellaï, O., Chmielewski, P., Choi, D., Christen, N., Ciraolo, G., Cordaro, L., Costea, S., Cruz, N., Czarnecka, A., Dal Molin, A., David, P., Decker, J., De Oliveira, H., Douai, D., Dreval, M. B., Dudson, B., Dunne, M., Duval, B. P., Eich, T., Elmore, S., Embréus, O., Esposito, B., Faitsch, M., Farnik, M., Fasoli, A., Fedorczak, N., Felici, F., Feng, S., Feng, X., Ferró, G., Février, O., Ficker, O., Fil, A., Fontana, M., Frassinetti, L., Furno, I., Gahle, D.S., Galassi, D., Gałazka, K., Gallo, A., Galperti, C., Garavaglia, S., Garcia, J., Garcia-Munoz, M., Garrido, A.J., Garrido, I., Gath, J., Geiger, B., Giruzzi, G., Gobbin, M., Goodman, T.P., Gorini, G., Gospodarczyk, M., Granucci, G., Graves, J.P., Gruca, M., Gyergyek, T., Hakola, A., Happel, T., Harrer, G.F., Harrison, J., Havličková, E., Hawke, J., Henderson, S., Hennequin, P., Hesslow, L., Hogeweij, D., Hogge, J.Ph., Hopf, C., Hoppe, M., Horáček, J., Huang, Z., Hubbard, A., Iantchenko, A., Igochine, V., Innocente, P., Ionita Schrittwieser, C., Isliker, H., Jacquier, R., Jardin, A., Kappatou, A., Karpushov, A., Kazantzidis, P.V., Keeling, D., Kirneva, N., Komm, M., Kong, M., Kovacic, J., Krawczyk, N., Kudlacek, O., Kurki-Suonio, T., Kwiatkowski, R., Labit, B., Lazzaro, E., Linehan, B., Lipschultz, B., Llobet, X., Lombroni, R., Loschiavo, V.P., Lunt, T., Macusova, E., Madsen, J., Maljaars, E., Mantica, P., Maraschek, M., Marchetto, C., Marco, A., Mariani, A., Marini, C., Martin, Y., Matos, F., Maurizio, R., Mavkov, B., Mazon, D., McCarthy, P., McDermott, R., Menkovski, V., Merle, A., Meyer, H., Micheletti, D., Militello, F., Mitosinkova, K., Mlynář, J., Moiseenko, V., Molina Cabrera, P.A., Morales, J., Moret, J.M., Moro, A., Mumgaard, R.T., Naulin, V., Nem, R.D., Nespoli, F., Nielsen, A.H., Nielsen, S.K., Nocente, M., Nowak, S., Offeddu, N., Orsitto, F.P., Paccagnella, R., Palha, A., Papp, G., Pau, A., Pavlichenko, R.O., Perek, A., Pericoli Ridolfini, V., Pesamosca, F., Piergotti, V., Pigatto, L., Piovesan, P., Piron, C., Plyusnin, V., Poli, E., Porte, L., Pucella, G., Puiatti, M.E., Pütterich, T., Rabinski, M., Juul Rasmussen, J., Ravensbergen, T., Reich, M., Reimerdes, H., Reimold, F., Reux, C., Ricci, D., Ricci, P., Rispoli, N., Rosato, J., Saarelma, S., Salewski, M., Salmi, A., Sauter, O., Scheffer, M., Schlatter, Ch., Schneider, B.S., Schrittwieser, R., Sharapov, S., Sheeba, R. R., Sheikh, U., Shousha, R., Silva, M., Sinha, J., Sozzi, C., Spolaore, M., Stipani, L., Strand, P., Tala, T., Tema Biwole, A.S., Teplukhina, A. A., Testa, D., Theiler, C., Thornton, A., Tomaž, G., Tomes, M., Tran, M.Q., Tsironis, C., Tsui, C.K., Urban, J., Valisa, M., Vallar, M., van Vugt, D., Vartanian, S., Vasilovici, O., Verhaegh, K., Vermare, L., Vianello, N., Viezzer, E., Vijvers, W.A.J., Villone, F., Voitsekhovitch, I., Vu, N.M.T., Walkden, N., Wauters, T., Weiland, M., Weisen, H., Wensing, M., Wiesenberger, M., Wilkie, G., Wischmeier, M., Wu, K., Yoshida, M., Zagorski, R., Zanca, P., Zebrowski, J., Zisis, A., and Zuin, M.

Abstract

The research program of the TCV tokamak ranges from conventional to advanced-tokamak scenarios and alternative divertor configurations, to exploratory plasmas driven by theoretical insight, exploiting the device's unique shaping capabilities. Disruption avoidance by real-time locked mode prevention or unlocking with electron-cyclotron resonance heating (ECRH) was thoroughly documented, using magnetic and radiation triggers. Runaway generation with high-Z noble-gas injection and runaway dissipation by subsequent Ne or Ar injection were studied for model validation. The new 1 MW neutral beam injector has expanded the parameter range, now encompassing ELMy H-modes in an ITER-like shape and nearly non-inductive H-mode discharges sustained by electron cyclotron and neutral beam current drive. In the H-mode, the pedestal pressure increases modestly with nitrogen seeding while fueling moves the density pedestal outwards, but the plasma stored energy is largely uncorrelated to either seeding or fueling. High fueling at high triangularity is key to accessing the attractive small edge-localized mode (type-II) regime. Turbulence is reduced in the core at negative triangularity, consistent with increased confinement and in accord with global gyrokinetic simulations. The geodesic acoustic mode, possibly coupled with avalanche events, has been linked with particle flow to the wall in diverted plasmas. Detachment, scrape-off layer transport, and turbulence were studied in L- and H-modes in both standard and alternative configurations (snowflake, super-X, and beyond). The detachment process is caused by power 'starvation' reducing the ionization source, with volume recombination playing only a minor role. Partial detachment in the H-mode is obtained with impurity seeding and has shown little dependence on flux expansion in standard single-null geometry. In the attached L-mode phase, increasing the outer connection length reduces the in-out heat-flow asymmetry. A doublet plasma

Published
2019

33. Physics research on the TCV tokamak facility: From conventional to alternative scenarios and beyond

Author

Swiss National Science Foundation, Coda, S., Agostini, Matteo, Albanese, R., Alberti, S., Alessi, E., Allan, S., Allcock, J., Ambrosino, R., Anand, H., Andrebe, Y., Arnichand, H., Gahle, D. S., Galassi, D., Pericoli Ridolfini, V., Gallo, A., Salmi, A., Calacci, L., Zagorski, R., Linehan, B., Harrer, G. F., Boedo, J. A., Vianello, N., Lipschultz, B., Llobet, X., Wilkie, G., Voitsekhovitch, I., Carraro, L., Lombroni, R., Granucci, G., Loschiavo, V. P., Lunt, T., Weiland, M., Viezzer, Eleonora, Chmielewski, P., Ball, J., Giruzzi, G., Macusova, E., Madsen, J., Hesslow, L., Zebrowski, J., Garrido, A. J., Maljaars, E., Mantica, P., Happel, T., Wischmeier, M., Galperti, C., Puiatti, M. E., Maraschek, M., Weisen, H., Reimold, F., Marchetto, C., Vu, N. M. T., Rosato, J., Marco, A., Vijvers, W. A. J., Scheffer, M., Mariani, A., Schrittwieser, R., Marini, C., Martin, Y., Baquero, M., Zisis, A., Hogeweij, D., Igochine, V., Kappatou, A., Kong, M., Matos, F., Maruzio, R., Mavkov, B., Sharapov, S. E., Schalatter, Ch., Saarelma, S., Reux, C., Pütterich, T., Mazon, D., McCarthy, P., Reimerdes, H., McDermott, R.M., Pucella, G., Menkovski, V., Hopf, C., Gruca, M., Merle, A., Buratti, P, Havlíčková, E., Meyer, H., Bouquey, F., Piergotti, V., Saelwski, M., Micheletti, D., Beletskii, A. A., Bufferand, H., Ricci, D., Garrido, I., Militello, F., Mitosinkova, K., Bonanomi, N., Rabinski, M., Ciraolo, G., Gobbin, M., Mlynář, J., Moiseenko, V., Wu, K., Molina Cabrera, P. A., Chellaï, Oulfa, Kazantzidis, P. V., Graves, J. P., Sheea, R. R., Pesamosca, F., Cordaro, L., Sheikh, U., Shousha, R., Goodman, T. P., Garavaglia, S., Kovacic, J., Silva, M., Offeddu, N., Sinha, J., Sozzi, C., Gath, J., Kwiatkowski, R., Hawke, J., Nespoli, F., Spolaore, M., Stipani, L., Poli, E., Gyergyek, T., Mumgaard, R. T., Bogar, O., Strand, P., Gorini, Giuseppe, Morales, J., Brida, D., Tala, T., Hubbard, A., Camenen, Y., Tema Biwole, A. S., García-Muñoz, M., Casolari, A., Teplukhina, A. A., Choi, D., Testa, D., Costea, S., Theiler, C., Thornton, A., Henderson, S., Iantchenko, A., Porte, L., Reich, M., Ricci, P., Tomaž, G., Tomes, M., Tran, M. Q., Cruz, N., Christen, N., Causa, F., Carnevale, D., Bucalossi, J., Bolzonella, T., Tsironis, C., Tsui, C. K., Bowman, C., Urban, J., Blanchard, P., Pavlinchenko, R. O., Valisa, M., Jardin, A., Pigatto, L., Vallar, M., Hakola, A., Čeřovský, J., Van Vugt, D., Hennequin, P., Ayllón Guerola, Juan Manuel, Carpanese , F., Naulin, V., Vartanian, S., Vasilovici, O., Geiger, B., Buermans, J., Nielsen, A. H., Verhaegh, K., Vermare, L., Gospodarczyk, M., Bombarda, T., Kurki-Suonio, T., Rispoli, N., Orsito, F. P., Czarnecka, A., Yoshida, M., Dal Molin, A., David, P., Nielsen, S. K., Moret, J. M., Sauter, O., Decker, J., Wensing, M., De Oliveira, H., Douai, D., Bernert, M., Piovesan, P., Walkden, N., Dreval, M. B., Hoppe, M., Zuin, M., Perek, A., Villone, F., Dudson, B., Dunne, M., Nocente, M., Ionita Schrittwieser, C., Duval, B. P., Nem, R. D., Keeling, D., Eich, T., Moro, A.M., Krawczyk, N., Elmore, S., Labit, B., Embréus, O., Esposito, B., Faitsch, M., Piron, C., Bin, W., EUROfusion MST1 Team, Calabró, G., Carr, M., Farník, M., Fasoli, M. A., Horáček, J., Lazzaro, E., Kudlacek, O., Kirneva, N., Isliker, H., Fedorczak, N., Felici, F., Feng, S., Innocente, P., Feng, X., Hogge, J. Ph., Ferró, G., Blanken, T. C., Zanka, P., Février, O., Ravensbergen, T., Bagnato, F., Ficker, O., Plyusnin, V., Harrison, J., Komm, M., Fil, A., Fontana, M., Rasmussen, Juul, Jacquier, R., Wauters, T., Frassinetti, L., Huang, Z., Nowak, S., Furno, I., Schneider, B. S., Wiesenberger, M., Swiss National Science Foundation, Coda, S., Agostini, Matteo, Albanese, R., Alberti, S., Alessi, E., Allan, S., Allcock, J., Ambrosino, R., Anand, H., Andrebe, Y., Arnichand, H., Gahle, D. S., Galassi, D., Pericoli Ridolfini, V., Gallo, A., Salmi, A., Calacci, L., Zagorski, R., Linehan, B., Harrer, G. F., Boedo, J. A., Vianello, N., Lipschultz, B., Llobet, X., Wilkie, G., Voitsekhovitch, I., Carraro, L., Lombroni, R., Granucci, G., Loschiavo, V. P., Lunt, T., Weiland, M., Viezzer, Eleonora, Chmielewski, P., Ball, J., Giruzzi, G., Macusova, E., Madsen, J., Hesslow, L., Zebrowski, J., Garrido, A. J., Maljaars, E., Mantica, P., Happel, T., Wischmeier, M., Galperti, C., Puiatti, M. E., Maraschek, M., Weisen, H., Reimold, F., Marchetto, C., Vu, N. M. T., Rosato, J., Marco, A., Vijvers, W. A. J., Scheffer, M., Mariani, A., Schrittwieser, R., Marini, C., Martin, Y., Baquero, M., Zisis, A., Hogeweij, D., Igochine, V., Kappatou, A., Kong, M., Matos, F., Maruzio, R., Mavkov, B., Sharapov, S. E., Schalatter, Ch., Saarelma, S., Reux, C., Pütterich, T., Mazon, D., McCarthy, P., Reimerdes, H., McDermott, R.M., Pucella, G., Menkovski, V., Hopf, C., Gruca, M., Merle, A., Buratti, P, Havlíčková, E., Meyer, H., Bouquey, F., Piergotti, V., Saelwski, M., Micheletti, D., Beletskii, A. A., Bufferand, H., Ricci, D., Garrido, I., Militello, F., Mitosinkova, K., Bonanomi, N., Rabinski, M., Ciraolo, G., Gobbin, M., Mlynář, J., Moiseenko, V., Wu, K., Molina Cabrera, P. A., Chellaï, Oulfa, Kazantzidis, P. V., Graves, J. P., Sheea, R. R., Pesamosca, F., Cordaro, L., Sheikh, U., Shousha, R., Goodman, T. P., Garavaglia, S., Kovacic, J., Silva, M., Offeddu, N., Sinha, J., Sozzi, C., Gath, J., Kwiatkowski, R., Hawke, J., Nespoli, F., Spolaore, M., Stipani, L., Poli, E., Gyergyek, T., Mumgaard, R. T., Bogar, O., Strand, P., Gorini, Giuseppe, Morales, J., Brida, D., Tala, T., Hubbard, A., Camenen, Y., Tema Biwole, A. S., García-Muñoz, M., Casolari, A., Teplukhina, A. A., Choi, D., Testa, D., Costea, S., Theiler, C., Thornton, A., Henderson, S., Iantchenko, A., Porte, L., Reich, M., Ricci, P., Tomaž, G., Tomes, M., Tran, M. Q., Cruz, N., Christen, N., Causa, F., Carnevale, D., Bucalossi, J., Bolzonella, T., Tsironis, C., Tsui, C. K., Bowman, C., Urban, J., Blanchard, P., Pavlinchenko, R. O., Valisa, M., Jardin, A., Pigatto, L., Vallar, M., Hakola, A., Čeřovský, J., Van Vugt, D., Hennequin, P., Ayllón Guerola, Juan Manuel, Carpanese , F., Naulin, V., Vartanian, S., Vasilovici, O., Geiger, B., Buermans, J., Nielsen, A. H., Verhaegh, K., Vermare, L., Gospodarczyk, M., Bombarda, T., Kurki-Suonio, T., Rispoli, N., Orsito, F. P., Czarnecka, A., Yoshida, M., Dal Molin, A., David, P., Nielsen, S. K., Moret, J. M., Sauter, O., Decker, J., Wensing, M., De Oliveira, H., Douai, D., Bernert, M., Piovesan, P., Walkden, N., Dreval, M. B., Hoppe, M., Zuin, M., Perek, A., Villone, F., Dudson, B., Dunne, M., Nocente, M., Ionita Schrittwieser, C., Duval, B. P., Nem, R. D., Keeling, D., Eich, T., Moro, A.M., Krawczyk, N., Elmore, S., Labit, B., Embréus, O., Esposito, B., Faitsch, M., Piron, C., Bin, W., EUROfusion MST1 Team, Calabró, G., Carr, M., Farník, M., Fasoli, M. A., Horáček, J., Lazzaro, E., Kudlacek, O., Kirneva, N., Isliker, H., Fedorczak, N., Felici, F., Feng, S., Innocente, P., Feng, X., Hogge, J. Ph., Ferró, G., Blanken, T. C., Zanka, P., Février, O., Ravensbergen, T., Bagnato, F., Ficker, O., Plyusnin, V., Harrison, J., Komm, M., Fil, A., Fontana, M., Rasmussen, Juul, Jacquier, R., Wauters, T., Frassinetti, L., Huang, Z., Nowak, S., Furno, I., Schneider, B. S., and Wiesenberger, M.

Abstract

The research program of the TCV tokamak ranges from conventional to advanced-tokamak scenarios and alternative divertor configurations, to exploratory plasmas driven by theoretical insight, exploiting the device's unique shaping capabilities. Disruption avoidance by real-time locked mode prevention or unlocking with electron-cyclotron resonance heating (ECRH) was thoroughly documented, using magnetic and radiation triggers. Runaway generation with high-Z noble-gas injection and runaway dissipation by subsequent Ne or Ar injection were studied for model validation. The new 1 MW neutral beam injector has expanded the parameter range, now encompassing ELMy H-modes in an ITER-like shape and nearly non-inductive H-mode discharges sustained by electron cyclotron and neutral beam current drive. In the H-mode, the pedestal pressure increases modestly with nitrogen seeding while fueling moves the density pedestal outwards, but the plasma stored energy is largely uncorrelated to either seeding or fueling. High fueling at high triangularity is key to accessing the attractive small edge-localized mode (type-II) regime. Turbulence is reduced in the core at negative triangularity, consistent with increased confinement and in accord with global gyrokinetic simulations. The geodesic acoustic mode, possibly coupled with avalanche events, has been linked with particle flow to the wall in diverted plasmas. Detachment, scrape-off layer transport, and turbulence were studied in L- and H-modes in both standard and alternative configurations (snowflake, super-X, and beyond). The detachment process is caused by power 'starvation' reducing the ionization source, with volume recombination playing only a minor role. Partial detachment in the H-mode is obtained with impurity seeding and has shown little dependence on flux expansion in standard single-null geometry. In the attached L-mode phase, increasing the outer connection length reduces the in-out heat-flow asymmetry. A doublet plasma, fea

Published
2019

34. Scrape-off layer transport and filament characteristics in high-density tokamak regimes

Author

Vianello, N., Carralero, D., Tsui, C.K., Naulin, V., Agostini, M., Cziegler, I., Labit, B., Theiler, C., Wolfrum, E., Aguiam, D., Allan, S., Bernert, M., Boedo, J., Costea, S., De Oliveira, H., Fevrier, O., Galdon-Quiroga, J., Grenfell, G., Hakola, A., Ionita, C., Isliker, H., Karpushov, A., Kovacic, J., Lipschultz, B., Maurizio, R., McClements, K., Militello, F., Nielsen, A.H., Olsen, J., Rasmussen, J.J., Ravensbergen, T., Reimerdes, H., Schneider, B., Schrittwieser, R., Seliunin, E., Spolaore, M., Verhaegh, K., Vicente, J., Walkden, N., Zhang, W., Vianello, N., Carralero, D., Tsui, C.K., Naulin, V., Agostini, M., Cziegler, I., Labit, B., Theiler, C., Wolfrum, E., Aguiam, D., Allan, S., Bernert, M., Boedo, J., Costea, S., De Oliveira, H., Fevrier, O., Galdon-Quiroga, J., Grenfell, G., Hakola, A., Ionita, C., Isliker, H., Karpushov, A., Kovacic, J., Lipschultz, B., Maurizio, R., McClements, K., Militello, F., Nielsen, A.H., Olsen, J., Rasmussen, J.J., Ravensbergen, T., Reimerdes, H., Schneider, B., Schrittwieser, R., Seliunin, E., Spolaore, M., Verhaegh, K., Vicente, J., Walkden, N., and Zhang, W.

Abstract

A detailed cross-device investigation on the role of filamentary dynamics in high-density regimes has been performed within the EUROfusion framework, comparing the ASDEX Upgrade (AUG) and TCV tokamaks. Both devices run density ramp experiments at different levels of plasma current, keeping the toroidal field or q 95 constant in order to disentangle the role of the parallel connection length and the current. During the scan at a constant toroidal field, in both devices the scrape-off layer (SOL) profiles tend to develop a clear SOL density shoulder at a lower edge density whenever the current is reduced. Different current behaviour is substantially reconciled in terms of the edge density normalized to the Greenwald fraction. During the scan at constant q 95 AUG exhibits similar behaviour, whereas in TCV no upstream profile modification signature has been observed at lower current levels. The latter behaviour has been ascribed to the lack of target density rollover. The relation between the upstream density profile modification and detachment condition has been investigated. For both devices the relation between blob size and the SOL density e-folding length is found independent of the plasma current, with the observation of a clear increase in blob size and the edge density normalized to a Greenwald fraction. ASDEX Upgrade has also explored filamentary behaviour in the H-mode. The experiments in AUG have focused on the role of neutrals, performing discharges with and without cryogenic pumps, highlighting how high neutral pressure, not only in the divertor but also at the midplane, is needed in order to develop an H-mode SOL profile shoulder in AUG.

Published
2019

35. Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade

Author

Labit, B., Eich, T., Harrer, G.F., Wolfrum, E., Bernert, M., Dunne, M.G., Frassinetti, L., Hennequin, P., Maurizio, R., Merle, A., Meyer, H., Saarelma, S., Sheikh, U., Adamek, J., Agostini, M., Aguiam, D., Akers, R., Albanese, R., Albert, C., Alessi, E., Ambrosino, R., Andrèbe, Y., Angioni, C., Apruzzese, G., Aradi, M., Arnichand, H., Auriemma, F., Avdeeva, G., Ayllon-Guerola, J.M., Bagnato, F., Bandaru, V.K., Barnes, M., Barrera-Orte, L., Bettini, P., Bilato, R., Biletskyi, O., Bilkova, P., Bin, W., Blanchard, P., Blanken, T., Bobkov, V., Bock, A., Boeyaert, D., Bogar, K., Bogar, O., Bohm, P., Bolzonella, T., Bombarda, F., Boncagni, L., Bouquey, F., Bowman, C., Brezinsek, S., Brida, D., Brunetti, D., Bucalossi, J., Buchanan, J., Buermans, J., Bufferand, H., Buller, S., Buratti, P., Burckhart, A., Calabrò, G., Calacci, L., Camenen, Y., Cannas, B., Cano Megías, P., Carnevale, D., Carpanese, F., Carr, M., Carralero, D., Carraro, L., Casolari, A., Cathey, A., Causa, F., Cavedon, M., Cecconello, M., Ceccuzzi, S., Cerovsky, J., Chapman, S., Chmielewski, P., Choi, D., Cianfarani, C., Ciraolo, G., Coda, S., Coelho, R., Colas, L., Colette, D., Cordaro, L., Cordella, F., Costea, S., Coster, D., Cruz Zabala, D.J., Cseh, G., Czarnecka, A., Cziegler, I., D’Arcangelo, O., Dal Molin, A., David, P., De Carolis, G., De Oliveira, H., Decker, J., Dejarnac, R., Delogu, R., den Harder, N., Dimitrova, M., Dolizy, F., Domínguez-Palacios Durán, J.J., Douai, D., Drenik, A., Dreval, M., Dudson, B., Dunai, D., Duval, B.P., Dux, R., Elmore, S., Embréus, O., Erdõs, B., Fable, E., Faitsch, M., Fanni, A., Farnik, M., Faust, I., Faustin, J., Fedorczak, N., Felici, F., Feng, S., Feng, X., Ferreira, J., Ferrò, G., Février, O., Ficker, O., Figini, L., Figueiredo, A., Fil, A., Fontana, M., Francesco, M., Fuchs, C., Futatani, S., Gabellieri, L., Gadariya, D., Gahle, D., Galassi, D., Gałązka, K., Galdon-Quiroga, J., Galeani, S., Gallart, D., Gallo, A., Galperti, C., Garavaglia, S., Garcia, J., Garcia-Lopez, J., Garcia-Muñoz, M., Garzotti, L., Gath, J., Geiger, B., Giacomelli, L., Giannone, L., Gibson, S., Gil, L., Giovannozzi, E., Giruzzi, G., Gobbin, M., Gonzalez-Martin, J., Goodman, T.P., Gorini, G., Gospodarczyk, M., Granucci, G., Grekov, D., Grenfell, G., Griener, M., Groth, M., Grover, O., Gruca, M., Gude, A., Guimarais, L., Gyergyek, T., Hacek, P., Hakola, A., Ham, C., Happel, T., Harrison, J., Havranek, A., Hawke, J., Henderson, S., Hesslow, L., Hitzler, F., Hnat, B., Hobirk, J., Hoelzl, M., Hogeweij, D., Hopf, C., Hoppe, M., Horacek, J., Hron, M., Huang, Z., Iantchenko, A., Iglesias, D., Igochine, V., Innocente, P., Ionita-Schrittwieser, C., Isliker, H., Ivanova-Stanik, I., Jacobsen, A., Jakubowski, M., Janky, F., Jardin, A., Jaulmes, F., Jensen, T., Jonsson, T., Kallenbach, A., Kappatou, A., Karpushov, A., Kasilov, S., Kazakov, Y., Kazantzidis, P.V., Keeling, D., Kelemen, M., Kendl, A., Kernbichler, W., Kirk, A., Kocsis, G., Komm, M., Kong, M., Korovin, V., Koubiti, M., Kovacic, J., Krawczyk, N., Krieger, K., Kripner, L., Křivská, A., Kudlacek, O., Kulyk, Y., Kurki-Suonio, T., Kwiatkowski, R., Laggner, F., Laguardia, L., Lahtinen, A., Lang, P., Likonen, J., Lipschultz, B., Liu, F., Lombroni, R., Lorenzini, R., Loschiavo, V.P., Lunt, T., Macusova, E., Madsen, J., Maggiora, R., Maljaars, B., Manas, P., Mantica, P., Mantsinen, M.J., Manz, P., Maraschek, M., Marchenko, V., Marchetto, C., Mariani, A., Marini, C., Markovic, T., Marrelli, L., Martin, P., Martín Solís, J.R., Martitsch, A., Mastrostefano, S., Matos, F., Matthews, G., Mayoral, M.-L., Mazon, D., Mazzotta, C., Mc Carthy, P., McClements, K., McDermott, R., Mcmillan, B., Meineri, C., Menkovski, V., Meshcheriakov, D., Messmer, M., Micheletti, D., Milanesio, D., Militello, F., Miron, I.G., Mlynar, J., Moiseenko, V., Molina Cabrera, P.A., Morales, J., Moret, J.-M., Moro, A., Moulton, D., Nabais, F., Naulin, V., Naydenkova, D., Nem, R.D., Nespoli, F., Newton, S., Nielsen, A.H., Nielsen, S.K., Nikolaeva, V., Nocente, M., Nowak, S., Oberkofler, M., Ochoukov, R., Ollus, P., Olsen, J., Omotani, J., Ongena, J., Orain, F., Orsitto, F.P., Paccagnella, R., Palha, A., Panaccione, L., Panek, R., Panjan, M., Papp, G., Paradela Perez, I., Parra, F., Passeri, M., Pau, A., Pautasso, G., Pavlichenko, R., Perek, A., Pericoli Radolfini, V., Pesamosca, F., Peterka, M., Petrzilka, V., Piergotti, V., Pigatto, L., Piovesan, P., Piron, C., Piron, L., Plyusnin, V., Pokol, G., Poli, E., Pölöskei, P., Popov, T., Popovic, Z., Pór, G., Porte, L., Pucella, G., Puiatti, M.E., Pütterich, T., Rabinski, M., Juul Rasmussen, J., Rasmussen, J., Rattá, G.A., Ratynskaia, S., Ravensbergen, T., Réfy, D., Reich, M., Reimerdes, H., Reimold, F., Reiser, D., Reux, C., Reznik, S., Ricci, D., Rispoli, N., Rivero-Rodriguez, J.F., Rocchi, G., Rodriguez-Ramos, M., Romano, A., Rosato, J., Rubinacci, G., Rubino, G., Ryan, D.A., Salewski, M., Salmi, A., Samaddar, D., Sanchis-Sanchez, L., Santos, J., Särkimäki, K., Sassano, M., Sauter, O., Scannell, R., Scheffer, M., Schneider, B.S., Schneider, P., Schrittwieser, R., Schubert, M., Seidl, J., Seliunin, E., Sharapov, S., Sheeba, R.R., Sias, G., Sieglin, B., Silva, C., Sipilä, S., Smith, S., Snicker, A., Solano, E.R., Hansen, S.K., Soria-Hoyo, C., Sorokovoy, E., Sozzi, C., Sperduti, A., Spizzo, G., Spolaore, M., Stejner, M., Stipani, L., Stober, J., Strand, P., Sun, H., Suttrop, W., Sytnykov, D., Szepesi, T., Tál, B., Tala, T., Tardini, G., Tardocchi, M., Teplukhina, A., Terranova, D., Testa, D., Theiler, C., Thorén, E., Thornton, A., Tilia, B., Tolias, P., Tomes, M., Toscano-Jimenez, M., Tsironis, C., Tsui, C., Tudisco, O., Urban, J., Valisa, M., Vallar, M., Vallejos Olivares, P., Valovic, M., Van Vugt, D., Vanovac, B., Varje, J., Varju, J., Varoutis, S., Vartanian, S., Vasilovici, O., Vega, J., Verdoolaege, G., Verhaegh, K., Vermare, L., Vianello, N., Vicente, J., Viezzer, E., Villone, F., Voitsekhovitch, I., Voltolina, D., Vondracek, P., Vu, N.M.T., Walkden, N., Wauters, T., Weiland, M., Weinzettl, V., Wensing, M., Wiesen, S., Wiesenberger, M., Wilkie, G., Willensdorfer, M., Wischmeier, M., Wu, K., Xiang, L., Zagorski, R., Zaloga, D., Zanca, P., Zaplotnik, R., Zebrowski, J., Zhang, W., Zisis, A., Zoletnik, S., Zuin, M., Labit, B., Eich, T., Harrer, G.F., Wolfrum, E., Bernert, M., Dunne, M.G., Frassinetti, L., Hennequin, P., Maurizio, R., Merle, A., Meyer, H., Saarelma, S., Sheikh, U., Adamek, J., Agostini, M., Aguiam, D., Akers, R., Albanese, R., Albert, C., Alessi, E., Ambrosino, R., Andrèbe, Y., Angioni, C., Apruzzese, G., Aradi, M., Arnichand, H., Auriemma, F., Avdeeva, G., Ayllon-Guerola, J.M., Bagnato, F., Bandaru, V.K., Barnes, M., Barrera-Orte, L., Bettini, P., Bilato, R., Biletskyi, O., Bilkova, P., Bin, W., Blanchard, P., Blanken, T., Bobkov, V., Bock, A., Boeyaert, D., Bogar, K., Bogar, O., Bohm, P., Bolzonella, T., Bombarda, F., Boncagni, L., Bouquey, F., Bowman, C., Brezinsek, S., Brida, D., Brunetti, D., Bucalossi, J., Buchanan, J., Buermans, J., Bufferand, H., Buller, S., Buratti, P., Burckhart, A., Calabrò, G., Calacci, L., Camenen, Y., Cannas, B., Cano Megías, P., Carnevale, D., Carpanese, F., Carr, M., Carralero, D., Carraro, L., Casolari, A., Cathey, A., Causa, F., Cavedon, M., Cecconello, M., Ceccuzzi, S., Cerovsky, J., Chapman, S., Chmielewski, P., Choi, D., Cianfarani, C., Ciraolo, G., Coda, S., Coelho, R., Colas, L., Colette, D., Cordaro, L., Cordella, F., Costea, S., Coster, D., Cruz Zabala, D.J., Cseh, G., Czarnecka, A., Cziegler, I., D’Arcangelo, O., Dal Molin, A., David, P., De Carolis, G., De Oliveira, H., Decker, J., Dejarnac, R., Delogu, R., den Harder, N., Dimitrova, M., Dolizy, F., Domínguez-Palacios Durán, J.J., Douai, D., Drenik, A., Dreval, M., Dudson, B., Dunai, D., Duval, B.P., Dux, R., Elmore, S., Embréus, O., Erdõs, B., Fable, E., Faitsch, M., Fanni, A., Farnik, M., Faust, I., Faustin, J., Fedorczak, N., Felici, F., Feng, S., Feng, X., Ferreira, J., Ferrò, G., Février, O., Ficker, O., Figini, L., Figueiredo, A., Fil, A., Fontana, M., Francesco, M., Fuchs, C., Futatani, S., Gabellieri, L., Gadariya, D., Gahle, D., Galassi, D., Gałązka, K., Galdon-Quiroga, J., Galeani, S., Gallart, D., Gallo, A., Galperti, C., Garavaglia, S., Garcia, J., Garcia-Lopez, J., Garcia-Muñoz, M., Garzotti, L., Gath, J., Geiger, B., Giacomelli, L., Giannone, L., Gibson, S., Gil, L., Giovannozzi, E., Giruzzi, G., Gobbin, M., Gonzalez-Martin, J., Goodman, T.P., Gorini, G., Gospodarczyk, M., Granucci, G., Grekov, D., Grenfell, G., Griener, M., Groth, M., Grover, O., Gruca, M., Gude, A., Guimarais, L., Gyergyek, T., Hacek, P., Hakola, A., Ham, C., Happel, T., Harrison, J., Havranek, A., Hawke, J., Henderson, S., Hesslow, L., Hitzler, F., Hnat, B., Hobirk, J., Hoelzl, M., Hogeweij, D., Hopf, C., Hoppe, M., Horacek, J., Hron, M., Huang, Z., Iantchenko, A., Iglesias, D., Igochine, V., Innocente, P., Ionita-Schrittwieser, C., Isliker, H., Ivanova-Stanik, I., Jacobsen, A., Jakubowski, M., Janky, F., Jardin, A., Jaulmes, F., Jensen, T., Jonsson, T., Kallenbach, A., Kappatou, A., Karpushov, A., Kasilov, S., Kazakov, Y., Kazantzidis, P.V., Keeling, D., Kelemen, M., Kendl, A., Kernbichler, W., Kirk, A., Kocsis, G., Komm, M., Kong, M., Korovin, V., Koubiti, M., Kovacic, J., Krawczyk, N., Krieger, K., Kripner, L., Křivská, A., Kudlacek, O., Kulyk, Y., Kurki-Suonio, T., Kwiatkowski, R., Laggner, F., Laguardia, L., Lahtinen, A., Lang, P., Likonen, J., Lipschultz, B., Liu, F., Lombroni, R., Lorenzini, R., Loschiavo, V.P., Lunt, T., Macusova, E., Madsen, J., Maggiora, R., Maljaars, B., Manas, P., Mantica, P., Mantsinen, M.J., Manz, P., Maraschek, M., Marchenko, V., Marchetto, C., Mariani, A., Marini, C., Markovic, T., Marrelli, L., Martin, P., Martín Solís, J.R., Martitsch, A., Mastrostefano, S., Matos, F., Matthews, G., Mayoral, M.-L., Mazon, D., Mazzotta, C., Mc Carthy, P., McClements, K., McDermott, R., Mcmillan, B., Meineri, C., Menkovski, V., Meshcheriakov, D., Messmer, M., Micheletti, D., Milanesio, D., Militello, F., Miron, I.G., Mlynar, J., Moiseenko, V., Molina Cabrera, P.A., Morales, J., Moret, J.-M., Moro, A., Moulton, D., Nabais, F., Naulin, V., Naydenkova, D., Nem, R.D., Nespoli, F., Newton, S., Nielsen, A.H., Nielsen, S.K., Nikolaeva, V., Nocente, M., Nowak, S., Oberkofler, M., Ochoukov, R., Ollus, P., Olsen, J., Omotani, J., Ongena, J., Orain, F., Orsitto, F.P., Paccagnella, R., Palha, A., Panaccione, L., Panek, R., Panjan, M., Papp, G., Paradela Perez, I., Parra, F., Passeri, M., Pau, A., Pautasso, G., Pavlichenko, R., Perek, A., Pericoli Radolfini, V., Pesamosca, F., Peterka, M., Petrzilka, V., Piergotti, V., Pigatto, L., Piovesan, P., Piron, C., Piron, L., Plyusnin, V., Pokol, G., Poli, E., Pölöskei, P., Popov, T., Popovic, Z., Pór, G., Porte, L., Pucella, G., Puiatti, M.E., Pütterich, T., Rabinski, M., Juul Rasmussen, J., Rasmussen, J., Rattá, G.A., Ratynskaia, S., Ravensbergen, T., Réfy, D., Reich, M., Reimerdes, H., Reimold, F., Reiser, D., Reux, C., Reznik, S., Ricci, D., Rispoli, N., Rivero-Rodriguez, J.F., Rocchi, G., Rodriguez-Ramos, M., Romano, A., Rosato, J., Rubinacci, G., Rubino, G., Ryan, D.A., Salewski, M., Salmi, A., Samaddar, D., Sanchis-Sanchez, L., Santos, J., Särkimäki, K., Sassano, M., Sauter, O., Scannell, R., Scheffer, M., Schneider, B.S., Schneider, P., Schrittwieser, R., Schubert, M., Seidl, J., Seliunin, E., Sharapov, S., Sheeba, R.R., Sias, G., Sieglin, B., Silva, C., Sipilä, S., Smith, S., Snicker, A., Solano, E.R., Hansen, S.K., Soria-Hoyo, C., Sorokovoy, E., Sozzi, C., Sperduti, A., Spizzo, G., Spolaore, M., Stejner, M., Stipani, L., Stober, J., Strand, P., Sun, H., Suttrop, W., Sytnykov, D., Szepesi, T., Tál, B., Tala, T., Tardini, G., Tardocchi, M., Teplukhina, A., Terranova, D., Testa, D., Theiler, C., Thorén, E., Thornton, A., Tilia, B., Tolias, P., Tomes, M., Toscano-Jimenez, M., Tsironis, C., Tsui, C., Tudisco, O., Urban, J., Valisa, M., Vallar, M., Vallejos Olivares, P., Valovic, M., Van Vugt, D., Vanovac, B., Varje, J., Varju, J., Varoutis, S., Vartanian, S., Vasilovici, O., Vega, J., Verdoolaege, G., Verhaegh, K., Vermare, L., Vianello, N., Vicente, J., Viezzer, E., Villone, F., Voitsekhovitch, I., Voltolina, D., Vondracek, P., Vu, N.M.T., Walkden, N., Wauters, T., Weiland, M., Weinzettl, V., Wensing, M., Wiesen, S., Wiesenberger, M., Wilkie, G., Willensdorfer, M., Wischmeier, M., Wu, K., Xiang, L., Zagorski, R., Zaloga, D., Zanca, P., Zaplotnik, R., Zebrowski, J., Zhang, W., Zisis, A., Zoletnik, S., and Zuin, M.

Abstract

Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (ne,sep/nG ~ 0.3), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened.

Published
2019

36. Correcting for non-periodic behaviour in perturbative experiments: application to heat pulse propagation and modulated gas-puff experiments

Author

van Berkel, M., van Kampen, R.J. R., Vandersteen, G., Kobayashi, T., Ravensbergen, T., Igami, H., Lammers, J.T., Oosterwegel, G., Galperti, C., Felici, F., de Baar, M.R., Group, LHDExperiment, team, TCV, Control Systems Technology, Group Heemels, Applied Physics and Science Education, Science and Technology of Nuclear Fusion, and Electricity

Subjects
perturbative experiments, Radiation, 01 natural sciences, gas puff, 010305 fluids & plasmas, power, symbols.namesake, Quality (physics), 0103 physical sciences, Initial value problem, electron transport, 010306 general physics, Physics, Divertor, System identification, local polynomial method, Mechanics, Condensed Matter Physics, Fourier analysis, Core (optical fiber), Fourier transform, Nuclear Energy and Engineering, transport, detachment, symbols, identification, systems
Abstract

This paper introduces a recent innovation in dealing with non-periodic behavior often referred to as transients in perturbative experiments. These transients can be the result from the unforced response due to the initial condition and other slow trends in the measurement data and are a source of error when performing and interpreting Fourier spectra. Fourier analysis is particularly relevant in system identification used to build feedback controllers and the analysis of various pulsed experiments such as heat pulse propagation studies. The basic idea behind the methodology is that transients are continuous complex-valued smooth functions in the Fourier domain which can be estimated from the Fourier data. Then, these smooth functions can be subtracted from the data such that only periodic components are retained. The merit of the approach is shown in two experimental examples, i.e. heat pulse propagation (core transport analysis) and radiation front movement due to gas puffing in the divertor. The examples show that the quality of the data is significantly improved such that it allows for new interpretation of the results even for non-ideal measurements.

Published
2020
Full Text
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37. Physics research on the TCV tokamak facility: from conventional to alternative scenarios and beyond

Author

Coda, S., primary, Agostini, M., additional, Albanese, R., additional, Alberti, S., additional, Alessi, E., additional, Allan, S., additional, Allcock, J., additional, Ambrosino, R., additional, Anand, H., additional, Andrèbe, Y., additional, Arnichand, H., additional, Auriemma, F., additional, Ayllon-Guerola, J.M., additional, Bagnato, F., additional, Ball, J., additional, Baquero-Ruiz, M., additional, Beletskii, A.A., additional, Bernert, M., additional, Bin, W., additional, Blanchard, P., additional, Blanken, T.C., additional, Boedo, J.A., additional, Bogar, O., additional, Bolzonella, T., additional, Bombarda, F., additional, Bonanomi, N., additional, Bouquey, F., additional, Bowman, C., additional, Brida, D., additional, Bucalossi, J., additional, Buermans, J., additional, Bufferand, H., additional, Buratti, P., additional, Calabró, G., additional, Calacci, L., additional, Camenen, Y., additional, Carnevale, D., additional, Carpanese, F., additional, Carr, M., additional, Carraro, L., additional, Casolari, A., additional, Causa, F., additional, Čeřovský, J., additional, Chellaï, O., additional, Chmielewski, P., additional, Choi, D., additional, Christen, N., additional, Ciraolo, G., additional, Cordaro, L., additional, Costea, S., additional, Cruz, N., additional, Czarnecka, A., additional, Dal Molin, A., additional, David, P., additional, Decker, J., additional, De Oliveira, H., additional, Douai, D., additional, Dreval, M.B., additional, Dudson, B., additional, Dunne, M., additional, Duval, B.P., additional, Eich, T., additional, Elmore, S., additional, Embréus, O., additional, Esposito, B., additional, Faitsch, M., additional, Farník, M., additional, Fasoli, A., additional, Fedorczak, N., additional, Felici, F., additional, Feng, S., additional, Feng, X., additional, Ferró, G., additional, Février, O., additional, Ficker, O., additional, Fil, A., additional, Fontana, M., additional, Frassinetti, L., additional, Furno, I., additional, Gahle, D.S., additional, Galassi, D., additional, Gałązka, K., additional, Gallo, A., additional, Galperti, C., additional, Garavaglia, S., additional, Garcia, J., additional, Garcia-Muñoz, M., additional, Garrido, A.J., additional, Garrido, I., additional, Gath, J., additional, Geiger, B., additional, Giruzzi, G., additional, Gobbin, M., additional, Goodman, T.P., additional, Gorini, G., additional, Gospodarczyk, M., additional, Granucci, G., additional, Graves, J.P., additional, Gruca, M., additional, Gyergyek, T., additional, Hakola, A., additional, Happel, T., additional, Harrer, G.F., additional, Harrison, J., additional, Havlíčková, E., additional, Hawke, J., additional, Henderson, S., additional, Hennequin, P., additional, Hesslow, L., additional, Hogeweij, D., additional, Hogge, J.-Ph., additional, Hopf, C., additional, Hoppe, M., additional, Horáček, J., additional, Huang, Z., additional, Hubbard, A., additional, Iantchenko, A., additional, Igochine, V., additional, Innocente, P., additional, Ionita Schrittwieser, C., additional, Isliker, H., additional, Jacquier, R., additional, Jardin, A., additional, Kappatou, A., additional, Karpushov, A., additional, Kazantzidis, P.-V., additional, Keeling, D., additional, Kirneva, N., additional, Komm, M., additional, Kong, M., additional, Kovacic, J., additional, Krawczyk, N., additional, Kudlacek, O., additional, Kurki-Suonio, T., additional, Kwiatkowski, R., additional, Labit, B., additional, Lazzaro, E., additional, Linehan, B., additional, Lipschultz, B., additional, Llobet, X., additional, Lombroni, R., additional, Loschiavo, V.P., additional, Lunt, T., additional, Macusova, E., additional, Madsen, J., additional, Maljaars, E., additional, Mantica, P., additional, Maraschek, M., additional, Marchetto, C., additional, Marco, A., additional, Mariani, A., additional, Marini, C., additional, Martin, Y., additional, Matos, F., additional, Maurizio, R., additional, Mavkov, B., additional, Mazon, D., additional, McCarthy, P., additional, McDermott, R., additional, Menkovski, V., additional, Merle, A., additional, Meyer, H., additional, Micheletti, D., additional, Militello, F., additional, Mitosinkova, K., additional, Mlynář, J., additional, Moiseenko, V., additional, Molina Cabrera, P.A., additional, Morales, J., additional, Moret, J.-M., additional, Moro, A., additional, Mumgaard, R.T., additional, Naulin, V., additional, Nem, R.D., additional, Nespoli, F., additional, Nielsen, A.H., additional, Nielsen, S.K., additional, Nocente, M., additional, Nowak, S., additional, Offeddu, N., additional, Orsitto, F.P., additional, Paccagnella, R., additional, Palha, A., additional, Papp, G., additional, Pau, A., additional, Pavlichenko, R.O., additional, Perek, A., additional, Pericoli Ridolfini, V., additional, Pesamosca, F., additional, Piergotti, V., additional, Pigatto, L., additional, Piovesan, P., additional, Piron, C., additional, Plyusnin, V., additional, Poli, E., additional, Porte, L., additional, Pucella, G., additional, Puiatti, M.E., additional, Pütterich, T., additional, Rabinski, M., additional, Juul Rasmussen, J., additional, Ravensbergen, T., additional, Reich, M., additional, Reimerdes, H., additional, Reimold, F., additional, Reux, C., additional, Ricci, D., additional, Ricci, P., additional, Rispoli, N., additional, Rosato, J., additional, Saarelma, S., additional, Salewski, M., additional, Salmi, A., additional, Sauter, O., additional, Scheffer, M., additional, Schlatter, Ch., additional, Schneider, B.S., additional, Schrittwieser, R., additional, Sharapov, S., additional, Sheeba, R.R., additional, Sheikh, U., additional, Shousha, R., additional, Silva, M., additional, Sinha, J., additional, Sozzi, C., additional, Spolaore, M., additional, Stipani, L., additional, Strand, P., additional, Tala, T., additional, Tema Biwole, A.S., additional, Teplukhina, A.A., additional, Testa, D., additional, Theiler, C., additional, Thornton, A., additional, Tomaž, G., additional, Tomes, M., additional, Tran, M.Q., additional, Tsironis, C., additional, Tsui, C.K., additional, Urban, J., additional, Valisa, M., additional, Vallar, M., additional, Van Vugt, D., additional, Vartanian, S., additional, Vasilovici, O., additional, Verhaegh, K., additional, Vermare, L., additional, Vianello, N., additional, Viezzer, E., additional, Vijvers, W.A.J., additional, Villone, F., additional, Voitsekhovitch, I., additional, Vu, N.M.T., additional, Walkden, N., additional, Wauters, T., additional, Weiland, M., additional, Weisen, H., additional, Wensing, M., additional, Wiesenberger, M., additional, Wilkie, G., additional, Wischmeier, M., additional, Wu, K., additional, Yoshida, M., additional, Zagorski, R., additional, Zanca, P., additional, Zebrowski, J., additional, Zisis, A., additional, and Zuin, M., additional

Published
2019
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38. Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade

Author

Labit, B., primary, Eich, T., additional, Harrer, G.F., additional, Wolfrum, E., additional, Bernert, M., additional, Dunne, M.G., additional, Frassinetti, L., additional, Hennequin, P., additional, Maurizio, R., additional, Merle, A., additional, Meyer, H., additional, Saarelma, S., additional, Sheikh, U., additional, Adamek, J., additional, Agostini, M., additional, Aguiam, D., additional, Akers, R., additional, Albanese, R., additional, Albert, C., additional, Alessi, E., additional, Ambrosino, R., additional, Andrèbe, Y., additional, Angioni, C., additional, Apruzzese, G., additional, Aradi, M., additional, Arnichand, H., additional, Auriemma, F., additional, Avdeeva, G., additional, Ayllon-Guerola, J.M., additional, Bagnato, F., additional, Bandaru, V.K., additional, Barnes, M., additional, Barrera-Orte, L., additional, Bettini, P., additional, Bilato, R., additional, Biletskyi, O., additional, Bilkova, P., additional, Bin, W., additional, Blanchard, P., additional, Blanken, T., additional, Bobkov, V., additional, Bock, A., additional, Boeyaert, D., additional, Bogar, K., additional, Bogar, O., additional, Bohm, P., additional, Bolzonella, T., additional, Bombarda, F., additional, Boncagni, L., additional, Bouquey, F., additional, Bowman, C., additional, Brezinsek, S., additional, Brida, D., additional, Brunetti, D., additional, Bucalossi, J., additional, Buchanan, J., additional, Buermans, J., additional, Bufferand, H., additional, Buller, S., additional, Buratti, P., additional, Burckhart, A., additional, Calabrò, G., additional, Calacci, L., additional, Camenen, Y., additional, Cannas, B., additional, Cano Megías, P., additional, Carnevale, D., additional, Carpanese, F., additional, Carr, M., additional, Carralero, D., additional, Carraro, L., additional, Casolari, A., additional, Cathey, A., additional, Causa, F., additional, Cavedon, M., additional, Cecconello, M., additional, Ceccuzzi, S., additional, Cerovsky, J., additional, Chapman, S., additional, Chmielewski, P., additional, Choi, D., additional, Cianfarani, C., additional, Ciraolo, G., additional, Coda, S., additional, Coelho, R., additional, Colas, L., additional, Colette, D., additional, Cordaro, L., additional, Cordella, F., additional, Costea, S., additional, Coster, D., additional, Cruz Zabala, D.J., additional, Cseh, G., additional, Czarnecka, A., additional, Cziegler, I., additional, D’Arcangelo, O., additional, Dal Molin, A., additional, David, P., additional, De Carolis, G., additional, De Oliveira, H., additional, Decker, J., additional, Dejarnac, R., additional, Delogu, R., additional, den Harder, N., additional, Dimitrova, M., additional, Dolizy, F., additional, Domínguez-Palacios Durán, J.J., additional, Douai, D., additional, Drenik, A., additional, Dreval, M., additional, Dudson, B., additional, Dunai, D., additional, Duval, B.P., additional, Dux, R., additional, Elmore, S., additional, Embréus, O., additional, Erdõs, B., additional, Fable, E., additional, Faitsch, M., additional, Fanni, A., additional, Farnik, M., additional, Faust, I., additional, Faustin, J., additional, Fedorczak, N., additional, Felici, F., additional, Feng, S., additional, Feng, X., additional, Ferreira, J., additional, Ferrò, G., additional, Février, O., additional, Ficker, O., additional, Figini, L., additional, Figueiredo, A., additional, Fil, A., additional, Fontana, M., additional, Francesco, M., additional, Fuchs, C., additional, Futatani, S., additional, Gabellieri, L., additional, Gadariya, D., additional, Gahle, D., additional, Galassi, D., additional, Gałązka, K., additional, Galdon-Quiroga, J., additional, Galeani, S., additional, Gallart, D., additional, Gallo, A., additional, Galperti, C., additional, Garavaglia, S., additional, Garcia, J., additional, Garcia-Lopez, J., additional, Garcia-Muñoz, M., additional, Garzotti, L., additional, Gath, J., additional, Geiger, B., additional, Giacomelli, L., additional, Giannone, L., additional, Gibson, S., additional, Gil, L., additional, Giovannozzi, E., additional, Giruzzi, G., additional, Gobbin, M., additional, Gonzalez-Martin, J., additional, Goodman, T.P., additional, Gorini, G., additional, Gospodarczyk, M., additional, Granucci, G., additional, Grekov, D., additional, Grenfell, G., additional, Griener, M., additional, Groth, M., additional, Grover, O., additional, Gruca, M., additional, Gude, A., additional, Guimarais, L., additional, Gyergyek, T., additional, Hacek, P., additional, Hakola, A., additional, Ham, C., additional, Happel, T., additional, Harrison, J., additional, Havranek, A., additional, Hawke, J., additional, Henderson, S., additional, Hesslow, L., additional, Hitzler, F., additional, Hnat, B., additional, Hobirk, J., additional, Hoelzl, M., additional, Hogeweij, D., additional, Hopf, C., additional, Hoppe, M., additional, Horacek, J., additional, Hron, M., additional, Huang, Z., additional, Iantchenko, A., additional, Iglesias, D., additional, Igochine, V., additional, Innocente, P., additional, Ionita-Schrittwieser, C., additional, Isliker, H., additional, Ivanova-Stanik, I., additional, Jacobsen, A., additional, Jakubowski, M., additional, Janky, F., additional, Jardin, A., additional, Jaulmes, F., additional, Jensen, T., additional, Jonsson, T., additional, Kallenbach, A., additional, Kappatou, A., additional, Karpushov, A., additional, Kasilov, S., additional, Kazakov, Y., additional, Kazantzidis, P.V., additional, Keeling, D., additional, Kelemen, M., additional, Kendl, A., additional, Kernbichler, W., additional, Kirk, A., additional, Kocsis, G., additional, Komm, M., additional, Kong, M., additional, Korovin, V., additional, Koubiti, M., additional, Kovacic, J., additional, Krawczyk, N., additional, Krieger, K., additional, Kripner, L., additional, Křivská, A., additional, Kudlacek, O., additional, Kulyk, Y., additional, Kurki-Suonio, T., additional, Kwiatkowski, R., additional, Laggner, F., additional, Laguardia, L., additional, Lahtinen, A., additional, Lang, P., additional, Likonen, J., additional, Lipschultz, B., additional, Liu, F., additional, Lombroni, R., additional, Lorenzini, R., additional, Loschiavo, V.P., additional, Lunt, T., additional, Macusova, E., additional, Madsen, J., additional, Maggiora, R., additional, Maljaars, B., additional, Manas, P., additional, Mantica, P., additional, Mantsinen, M.J., additional, Manz, P., additional, Maraschek, M., additional, Marchenko, V., additional, Marchetto, C., additional, Mariani, A., additional, Marini, C., additional, Markovic, T., additional, Marrelli, L., additional, Martin, P., additional, Martín Solís, J.R., additional, Martitsch, A., additional, Mastrostefano, S., additional, Matos, F., additional, Matthews, G., additional, Mayoral, M.-L., additional, Mazon, D., additional, Mazzotta, C., additional, Mc Carthy, P., additional, McClements, K., additional, McDermott, R., additional, Mcmillan, B., additional, Meineri, C., additional, Menkovski, V., additional, Meshcheriakov, D., additional, Messmer, M., additional, Micheletti, D., additional, Milanesio, D., additional, Militello, F., additional, Miron, I.G., additional, Mlynar, J., additional, Moiseenko, V., additional, Molina Cabrera, P.A., additional, Morales, J., additional, Moret, J.-M., additional, Moro, A., additional, Moulton, D., additional, Nabais, F., additional, Naulin, V., additional, Naydenkova, D., additional, Nem, R.D., additional, Nespoli, F., additional, Newton, S., additional, Nielsen, A.H., additional, Nielsen, S.K., additional, Nikolaeva, V., additional, Nocente, M., additional, Nowak, S., additional, Oberkofler, M., additional, Ochoukov, R., additional, Ollus, P., additional, Olsen, J., additional, Omotani, J., additional, Ongena, J., additional, Orain, F., additional, Orsitto, F.P., additional, Paccagnella, R., additional, Palha, A., additional, Panaccione, L., additional, Panek, R., additional, Panjan, M., additional, Papp, G., additional, Paradela Perez, I., additional, Parra, F., additional, Passeri, M., additional, Pau, A., additional, Pautasso, G., additional, Pavlichenko, R., additional, Perek, A., additional, Pericoli Radolfini, V., additional, Pesamosca, F., additional, Peterka, M., additional, Petrzilka, V., additional, Piergotti, V., additional, Pigatto, L., additional, Piovesan, P., additional, Piron, C., additional, Piron, L., additional, Plyusnin, V., additional, Pokol, G., additional, Poli, E., additional, Pölöskei, P., additional, Popov, T., additional, Popovic, Z., additional, Pór, G., additional, Porte, L., additional, Pucella, G., additional, Puiatti, M.E., additional, Pütterich, T., additional, Rabinski, M., additional, Juul Rasmussen, J., additional, Rasmussen, J., additional, Rattá, G.A., additional, Ratynskaia, S., additional, Ravensbergen, T., additional, Réfy, D., additional, Reich, M., additional, Reimerdes, H., additional, Reimold, F., additional, Reiser, D., additional, Reux, C., additional, Reznik, S., additional, Ricci, D., additional, Rispoli, N., additional, Rivero-Rodriguez, J.F., additional, Rocchi, G., additional, Rodriguez-Ramos, M., additional, Romano, A., additional, Rosato, J., additional, Rubinacci, G., additional, Rubino, G., additional, Ryan, D.A., additional, Salewski, M., additional, Salmi, A., additional, Samaddar, D., additional, Sanchis-Sanchez, L., additional, Santos, J., additional, Särkimäki, K., additional, Sassano, M., additional, Sauter, O., additional, Scannell, R., additional, Scheffer, M., additional, Schneider, B.S., additional, Schneider, P., additional, Schrittwieser, R., additional, Schubert, M., additional, Seidl, J., additional, Seliunin, E., additional, Sharapov, S., additional, Sheeba, R.R., additional, Sias, G., additional, Sieglin, B., additional, Silva, C., additional, Sipilä, S., additional, Smith, S., additional, Snicker, A., additional, Solano, E.R., additional, Hansen, S.K., additional, Soria-Hoyo, C., additional, Sorokovoy, E., additional, Sozzi, C., additional, Sperduti, A., additional, Spizzo, G., additional, Spolaore, M., additional, Stejner, M., additional, Stipani, L., additional, Stober, J., additional, Strand, P., additional, Sun, H., additional, Suttrop, W., additional, Sytnykov, D., additional, Szepesi, T., additional, Tál, B., additional, Tala, T., additional, Tardini, G., additional, Tardocchi, M., additional, Teplukhina, A., additional, Terranova, D., additional, Testa, D., additional, Theiler, C., additional, Thorén, E., additional, Thornton, A., additional, Tilia, B., additional, Tolias, P., additional, Tomes, M., additional, Toscano-Jimenez, M., additional, Tsironis, C., additional, Tsui, C., additional, Tudisco, O., additional, Urban, J., additional, Valisa, M., additional, Vallar, M., additional, Vallejos Olivares, P., additional, Valovic, M., additional, Van Vugt, D., additional, Vanovac, B., additional, Varje, J., additional, Varju, J., additional, Varoutis, S., additional, Vartanian, S., additional, Vasilovici, O., additional, Vega, J., additional, Verdoolaege, G., additional, Verhaegh, K., additional, Vermare, L., additional, Vianello, N., additional, Vicente, J., additional, Viezzer, E., additional, Villone, F., additional, Voitsekhovitch, I., additional, Voltolina, D., additional, Vondracek, P., additional, Vu, N.M.T., additional, Walkden, N., additional, Wauters, T., additional, Weiland, M., additional, Weinzettl, V., additional, Wensing, M., additional, Wiesen, S., additional, Wiesenberger, M., additional, Wilkie, G., additional, Willensdorfer, M., additional, Wischmeier, M., additional, Wu, K., additional, Xiang, L., additional, Zagorski, R., additional, Zaloga, D., additional, Zanca, P., additional, Zaplotnik, R., additional, Zebrowski, J., additional, Zhang, W., additional, Zisis, A., additional, Zoletnik, S., additional, and Zuin, M., additional

Published
2019
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39. Density control in ITER: an iterative learning control and robust control approach

Author

Ravensbergen, T., de Vries, P.C., Felici, F., Blanken, T.C., Nouailletas, R., Zabeo, L., Ravensbergen, T., de Vries, P.C., Felici, F., Blanken, T.C., Nouailletas, R., and Zabeo, L.

Abstract

Plasma density control for next generation tokamaks, such as ITER, is challenging because of multiple reasons. The response of the usual gas valve actuators in future, larger fusion devices, might be too slow for feedback control. Both pellet fuelling and the use of feedforward-based control may help to solve this problem. Also, tight density limits arise during ramp-up, due to operational limits related to divertor detachment and radiative collapses. As the number of shots available for controller tuning will be limited in ITER, in this paper, iterative learning control (ILC) is proposed to determine optimal feedforward actuator inputs based on tracking errors, obtained in previous shots. This control method can take the actuator and density limits into account and can deal with large actuator delays. However, a purely feedforward-based density control may not be sufficient due to the presence of disturbances and shot-to-shot differences. Therefore, robust control synthesis is used to construct a robustly stabilizing feedback controller. In simulations, it is shown that this combined controller strategy is able to achieve good tracking performance in the presence of shot-to-shot differences, tight constraints, and model mismatches.

Published
2018

40. A systematic approach to optimize excitations for perturbative transport experiments

Author

van Berkel, M., De Cock, A., Ravensbergen, T., Hogeweij, G.M.D., Zwart, H.J., Vandersteen, G., van Berkel, M., De Cock, A., Ravensbergen, T., Hogeweij, G.M.D., Zwart, H.J., and Vandersteen, G.

Abstract

In this paper, techniques for optimal input design are used to optimize the waveforms of perturbative experiments in modern fusion devices. The main focus of this paper is to find the modulation frequency for which the accuracy of the estimated diffusion coefficient is maximal. Mathematically, this problem can be formulated as an optimization problem in which the Fisher information matrix is maximized. First, this optimization problem is solved for a simplified diffusion model, while assuming a slab geometry and a semi-infinite domain. Later, the optimization is repeated under more general conditions such as a cylindrical geometry, finite domain, and simultaneous estimation of multiple transport coefficients. Based on the results of these optimizations, guidelines are offered to select the modulation frequency and to determine the optimality of the corresponding experiment.

Published
2018

42. Development of a real-time algorithm for detection of the divertor detachment radiation front using multi-spectral imaging.

Author

Ravensbergen, T., van Berkel, M., Silburn, S.A., Harrison, J.R., Perek, A., Verhaegh, K., Vijvers, W.A.J., Theiler, C., Kirk, A., de Baar, M.R., and team, the EUROfusion MST1

Subjects
*RADIATION, *PLASMA radiation, *IMAGE processing, *PLASMA confinement, *ALGORITHMS, *SPECTRAL imaging, *LEG
Abstract

In this paper we present a novel algorithm to extract the optical plasma boundary and radiation front for detached divertor plasmas. We show that reliable detection of the divertor leg and radiation front is possible using lightweight image processing tools. Using a non-tomographic approach, the detected divertor leg and radiation front can be mapped to the poloidal plane. This approach is fast and accurate enough for real-time control purposes, allowing in particular real-time plasma shape and detachment control, and post-shot detachment physics and dynamics analysis. [ABSTRACT FROM AUTHOR]

Published
2020
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45. Overview of the preliminary design of the ITER plasma control system

Author

Snipes, J.A., primary, Albanese, R., additional, Ambrosino, G., additional, Ambrosino, R., additional, Amoskov, V., additional, Blanken, T.C., additional, Bremond, S., additional, Cinque, M., additional, de Tommasi, G., additional, de Vries, P.C., additional, Eidietis, N., additional, Felici, F., additional, Felton, R., additional, Ferron, J., additional, Formisano, A., additional, Gribov, Y., additional, Hosokawa, M., additional, Hyatt, A., additional, Humphreys, D., additional, Jackson, G., additional, Kavin, A., additional, Khayrutdinov, R., additional, Kim, D., additional, Kim, S.H., additional, Konovalov, S., additional, Lamzin, E., additional, Lehnen, M., additional, Lukash, V., additional, Lomas, P., additional, Mattei, M., additional, Mineev, A., additional, Moreau, P., additional, Neu, G., additional, Nouailletas, R., additional, Pautasso, G., additional, Pironti, A., additional, Rapson, C., additional, Raupp, G., additional, Ravensbergen, T., additional, Rimini, F., additional, Schneider, M., additional, Travere, J.-M., additional, Treutterer, W., additional, Villone, F., additional, Walker, M., additional, Welander, A., additional, Winter, A., additional, and Zabeo, L., additional

Published
2017
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47. Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV (vol 63, 026006, 2023)

Author

Koenders, J. T. W., Perek, A., Kool, B., Fevrier, O., Ravensbergen, T., Galperti, C., Duval, B. P., Theiler, C., and van Berkel, M.

Abstract

In the published paper titled 'Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV' (2023 Nucl. Fusion 63 026006), the legend of figure 5 shows the wrong colors: red and blue are switched. This corrigendum provides the correct legend for figure 5.

48. Physics research on the TCV tokamak facility: From conventional to alternative scenarios and beyond

Author

G. Tomaž, M. Weiland, J. Gath, Antti Hakola, Kevin Verhaegh, A.J. Thornton, Matthew Carr, J. Juul Rasmussen, S. Costea, Jorge Morales, A. Perek, X. Feng, F. Pesamosca, Marcelo Baquero-Ruiz, N. Vianello, A. Dal Molin, N. M. T. Vu, D. Hogeweij, G. Calabrò, Tom Wauters, Christian Hopf, E. Alessi, Aitor J. Garrido, Justin Ball, Daniele Carnevale, A. Czarnecka, S. Garavaglia, G. Ferro, George Wilkie, N. Krawczyk, M. Nocente, H. De Oliveira, Ivo Furno, W. Bin, O. Chellai, Stefano Coda, Fulvio Auriemma, Yann Camenen, W. A. J. Vijvers, Christian Theiler, A. N. Karpushov, M. Faitsch, Jérôme Bucalossi, Paolo Ricci, Antoine Merle, T. C. Blanken, Cristian Galperti, Duccio Testa, Ambrogio Fasoli, Y. Andrebe, F. Bagnato, S. Nowak, J. R. Harrison, O. Vasilovici, M. E. Puiatti, Stefan Kragh Nielsen, J. S. Allcock, L. Calacci, Matteo Zuin, V. Piergotti, P. Chmielewski, P. Molina Cabrera, Taina Kurki-Suonio, D. Micheletti, Emanuele Poli, Nuno Cruz, M. Farnik, Jonathan Graves, Alessandro Pau, Olivier Février, N. A. Kirneva, Bruce Lipschultz, E. Lazzaro, E. Havlickova, G. Giruzzi, Jens Madsen, L. Stipani, D. Brida, Ch. Schlatter, M. Wensing, R. O. Pavlichenko, F. Nespoli, J. Decker, Eva Macusova, Fulvio Militello, Nicola Offeddu, Heinz Isliker, A. Zisis, A. Marco, Laurie Porte, Marco Gobbin, Anna Salmi, S. Vartanian, J. Sinha, Matthias Komm, M. Spolaore, Anders Nielsen, T. Happel, R. D. Nem, A. Iantchenko, V.V. Plyusnin, C. Tsironis, V. Igochine, R. M. McDermott, Pär Strand, Benjamin Daniel Dudson, T. Ravensbergen, V. P. Loschiavo, H. Arnichand, E. Viezzer, Fabio Villone, Carlo Sozzi, Z. Huang, V. Pericoli Ridolfini, B. Linehan, L. Hesslow, P. Buratti, A. Casolari, M. Bernert, P. Mantica, H. Weisen, J-M Moret, Maiko Yoshida, N. Bonanomi, S. Feng, A. A. Teplukhina, Jakub Urban, F. Carpanese, C. Piron, S. Allan, Minh Quang Tran, C. Marini, Artur Palha, F.P. Orsitto, Roberto Ambrosino, A. S. Tema Biwole, Harry M. Meyer, Davide Galassi, J. Mlynář, N. Christen, M. Wischmeier, Mathias Hoppe, P. David, J. Horacek, M. Maraschek, G. Ciraolo, R. R. Sheeba, J. Zebrowski, M. Dreval, M. Silva, K. Gałązka, Olivier Sauter, Laure Vermare, A. Gallo, C. Reux, M. Gospodarczyk, O. Bogar, Roman Schrittwieser, C. Marchetto, Patrick J. McCarthy, Joël Rosato, G. Pucella, K. Wu, Volker Naulin, Bojan Mavkov, S. Elmore, Lorella Carraro, Gustavo Granucci, Christopher N. Bowman, O. Kudlacek, M. Gruca, A. Jardin, Federico Felici, Didier Mazon, D. C. van Vugt, D. Douai, Jose Boedo, Raffaele Albanese, U. A. Sheikh, Hugo Bufferand, R. Lombroni, T. Pütterich, Benedikt Geiger, X. Llobet, Izaskun Garrido, J.-Ph. Hogge, J. Ayllon-Guerola, Nicolas Fedorczak, Timothy Goodman, A. Mariani, E. Maljaars, Matteo Agostini, Lorenzo Frassinetti, S. E. Sharapov, C.K. Tsui, Vladimir E. Moiseenko, Robert Mumgaard, Amanda Hubbard, L. Pigatto, F. Matos, D. S. Gahle, Roberto Maurizio, I. Voitsekhovitch, Paolo Zanca, J. Buermans, A. Fil, T. Lunt, S. S. Henderson, D. Ricci, M. Kong, Ondrej Ficker, Matthias Wiesenberger, L. Cordaro, P. Innocente, Roberto Paccagnella, Benoit Labit, N. Rispoli, M. Rabinski, G. F. Harrer, Roch Kwiatkowski, A. Moro, A. A. Beletskii, M. Vallar, M. Reich, F. Reimold, P. Piovesan, Mirko Salewski, J. Hawke, Giuseppe Gorini, J. Čeřovský, F. Causa, H. Reimerdes, B. Esposito, Jernej Kovacic, P. V. Kazantzidis, H. Anand, Gergely Papp, M. Valisa, K. Mitosinkova, Vlado Menkovski, F. Bombarda, M. Fontana, Tommaso Bolzonella, Pascale Hennequin, T. Gyergyek, D. L. Keeling, T. Eich, M. Garcia-Munoz, Stefano Alberti, P. Blanchard, F. Bouquey, R. Shousha, M. Scheffer, B. S. Schneider, R. Jacquier, D. Choi, Nick Walkden, Ola Embréus, C. Ionita Schrittwieser, S. Saarelma, J. Garcia, M. G. Dunne, M. Tomes, R. Zagórski, Y. R. Martin, A. Kappatou, B. P. Duval, T. Tala, Swiss National Science Foundation, Universita degli studi di Napoli 'Parthenope' [Napoli], Max-Planck-Institut für Plasmaphysik [Garching] (IPP), Institut de Recherche sur la Fusion par confinement Magnétique (IRFM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Istituto di Fisica del Plasma, EURATOM-ENEA-CNR Association, Consiglio Nazionale delle Ricerche [Roma] (CNR), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas (CRPP), Department of Physics [Stockholm], Stockholm University, Laboratoire de Physique des Plasmas (LPP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), EURATOM/CCFE Fusion Association, Culham Science Centre [Abingdon], York Plasma Institute (YPI), University of York [York, UK], Faculty of Mathematics and Physics [Praha/Prague], Charles University [Prague] (CU), Association EURATOM-CEA (CEA/DSM/DRFC), University College Cork (UCC), Department of Mechanical and Manufacturing Engineering [Aalborg] (M-TECH), Aalborg University [Denmark] (AAU), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Instituto de Plasmas e Fusão Nuclear [Lisboa] (IPFN), Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), Université Paris-Saclay-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École polytechnique (X)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Coda, S, Agostini, M, Albanese, R, Alberti, S, Alessi, E, Allan, S, Allcock, J, Ambrosino, R, Anand, H, Andrebe, Y, Arnichand, H, Auriemma, F, Ayllon-Guerola, J, Bagnato, F, Ball, J, Baquero-Ruiz, M, Beletskii, A, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Bogar, O, Bolzonella, T, Bombarda, F, Bonanomi, N, Bouquey, F, Bowman, C, Brida, D, Bucalossi, J, Buermans, J, Bufferand, H, Buratti, P, Calabro, G, Calacci, L, Camenen, Y, Carnevale, D, Carpanese, F, Carr, M, Carraro, L, Casolari, A, Causa, F, Cerovsky, J, Chellai, O, Chmielewski, P, Choi, D, Christen, N, Ciraolo, G, Cordaro, L, Costea, S, Cruz, N, Czarnecka, A, Dal Molin, A, David, P, Decker, J, De Oliveira, H, Douai, D, Dreval, M, Dudson, B, Dunne, M, Duval, B, Eich, T, Elmore, S, Embreus, O, Esposito, B, Faitsch, M, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferro, G, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Munoz, M, Garrido, A, Garrido, I, Gath, J, Geiger, B, Giruzzi, G, Gobbin, M, Goodman, T, Gorini, G, Gospodarczyk, M, Granucci, G, Graves, J, Gruca, M, Gyergyek, T, Hakola, A, Happel, T, Harrer, G, Harrison, J, Havlickova, E, Hawke, J, Henderson, S, Hennequin, P, Hesslow, L, Hogeweij, D, Hogge, J, Hopf, C, Hoppe, M, Horacek, J, Huang, Z, Hubbard, A, Iantchenko, A, Igochine, V, Innocente, P, Ionita Schrittwieser, C, Isliker, H, Jacquier, R, Jardin, A, Kappatou, A, Karpushov, A, Kazantzidis, P, Keeling, D, Kirneva, N, Komm, M, Kong, M, Kovacic, J, Krawczyk, N, Kudlacek, O, Kurki-Suonio, T, Kwiatkowski, R, Labit, B, Lazzaro, E, Linehan, B, Lipschultz, B, Llobet, X, Lombroni, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maljaars, E, Mantica, P, Maraschek, M, Marchetto, C, Marco, A, Mariani, A, Marini, C, Martin, Y, Matos, F, Frisina, M, Mavkov, B, Mazon, D, Mccarthy, P, Mcdermott, R, Menkovski, V, Merle, A, Meyer, H, Micheletti, D, Militello, F, Mitosinkova, K, Mlynar, J, Moiseenko, V, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Mumgaard, R, Naulin, V, Nem, R, Nespoli, F, Nielsen, A, Nielsen, S, Nocente, M, Nowak, S, Offeddu, N, Orsitto, F, Paccagnella, R, Palha, A, Papp, G, Pau, A, Pavlichenko, R, Perek, A, Pericoli Ridolfini, V, Pesamosca, F, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Plyusnin, V, Poli, E, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rabinski, M, Juul Rasmussen, J, Ravensbergen, T, Reich, M, Reimerdes, H, Reimold, F, Reux, C, Ricci, D, Ricci, P, Rispoli, N, Rosato, J, Saarelma, S, Salewski, M, Salmi, A, Sauter, O, Scheffer, M, Schlatter, C, Schneider, B, Schrittwieser, R, Sharapov, S, Sheeba, R, Sheikh, U, Shousha, R, Silva, M, Sinha, J, Sozzi, C, Spolaore, M, Stipani, L, Strand, P, Tala, T, Tema Biwole, A, Teplukhina, A, Testa, D, Theiler, C, Thornton, A, Tomaz, G, Tomes, M, Tran, M, Tsironis, C, Tsui, C, Urban, J, Valisa, M, Vallar, M, Van Vugt, D, Vartanian, S, Vasilovici, O, Verhaegh, K, Vermare, L, Vianello, N, Viezzer, E, Vijvers, W, Villone, F, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weisen, H, Wensing, M, Wiesenberger, M, Wilkie, G, Wischmeier, M, Wu, K, Yoshida, M, Zagorski, R, Zanca, P, Zebrowski, J, Zisis, A, Zuin, M, Università degli Studi di Napoli 'Parthenope' = University of Naples (PARTHENOPE), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Université Paris-Sud - Paris 11 (UP11)-Observatoire de Paris, Coda, S., Agostini, M., Albanese, R., Alberti, S., Alessi, E., Allan, S., Allcock, J., Ambrosino, R., Anand, H., Andrebe, Y., Arnichand, H., Auriemma, F., Ayllon-Guerola, J. M., Bagnato, F., Ball, J., Baquero-Ruiz, M., Beletskii, A. A., Bernert, M., Bin, W., Blanchard, P., Blanken, T. C., Boedo, J. A., Bogar, O., Bolzonella, T., Bombarda, F., Bonanomi, N., Bouquey, F., Bowman, C., Brida, D., Bucalossi, J., Buermans, J., Bufferand, H., Buratti, P., Calabro, G., Calacci, L., Camenen, Y., Carnevale, D., Carpanese, F., Carr, M., Carraro, L., Casolari, A., Causa, F., Cerovsky, J., Chellai, O., Chmielewski, P., Choi, D., Christen, N., Ciraolo, G., Cordaro, L., Costea, S., Cruz, N., Czarnecka, A., Dal Molin, A., David, P., Decker, J., De Oliveira, H., Douai, D., Dreval, M. B., Dudson, B., Dunne, M., Duval, B. P., Eich, T., Elmore, S., Embreus, O., Esposito, B., Faitsch, M., Farnik, M., Fasoli, A., Fedorczak, N., Felici, F., Feng, S., Feng, X., Ferro, G., Fevrier, O., Ficker, O., Fil, A., Fontana, M., Frassinetti, L., Furno, I., Gahle, D. S., Galassi, D., Galazka, K., Gallo, A., Galperti, C., Garavaglia, S., Garcia, J., Garcia-Munoz, M., Garrido, A. 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P., Lunt, T., Macusova, E., Madsen, J., Maljaars, E., Mantica, P., Maraschek, M., Marchetto, C., Marco, A., Mariani, A., Marini, C., Martin, Y., Matos, F., Maurizio, R., Mavkov, B., Mazon, D., Mccarthy, P., Mcdermott, R., Menkovski, V., Merle, A., Meyer, H., Micheletti, D., Militello, F., Mitosinkova, K., Mlynar, J., Moiseenko, V., Molina Cabrera, P. A., Morales, J., Moret, J. -M., Moro, A., Mumgaard, R. T., Naulin, V., Nem, R. D., Nespoli, F., Nielsen, A. H., Nielsen, S. K., Nocente, M., Nowak, S., Offeddu, N., Orsitto, F. P., Paccagnella, R., Palha, A., Papp, G., Pau, A., Pavlichenko, R. O., Perek, A., Pericoli Ridolfini, V., Pesamosca, F., Piergotti, V., Pigatto, L., Piovesan, P., Piron, C., Plyusnin, V., Poli, E., Porte, L., Pucella, G., Puiatti, M. E., Putterich, T., Rabinski, M., Juul Rasmussen, J., Ravensbergen, T., Reich, M., Reimerdes, H., Reimold, F., Reux, C., Ricci, D., Ricci, P., Rispoli, N., Rosato, J., Saarelma, S., Salewski, M., Salmi, A., Sauter, O., Scheffer, M., Schlatter, C., Schneider, B. S., Schrittwieser, R., Sharapov, S., Sheeba, R. R., Sheikh, U., Shousha, R., Silva, M., Sinha, J., Sozzi, C., Spolaore, M., Stipani, L., Strand, P., Tala, T., Tema Biwole, A. S., Teplukhina, A. A., Testa, D., Theiler, C., Thornton, A., Tomaz, G., Tomes, M., Tran, M. Q., Tsironis, C., Tsui, C. K., Urban, J., Valisa, M., Vallar, M., Van Vugt, D., Vartanian, S., Vasilovici, O., Verhaegh, K., Vermare, L., Vianello, N., Viezzer, E., Vijvers, W. A. J., Villone, F., Voitsekhovitch, I., Vu, N. M. T., Walkden, N., Wauters, T., Weiland, M., Weisen, H., Wensing, M., Wiesenberger, M., Wilkie, G., Wischmeier, M., Wu, K., Yoshida, M., Zagorski, R., Zanca, P., Zebrowski, J., Zisis, A., Zuin, M., Coda, S. et al, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear., Universidad de Sevilla, Departamento de Ingeniería Mecánica y Fabricación, Universidad de Sevilla. TEP111: Ingeniería Mecánica, Universidad de Sevilla. RNM138: Física Nuclear Aplicada, EUROfusion MST1 Team, Control Systems Technology, Data Mining, Science and Technology of Nuclear Fusion, and Magneto-Hydro-Dynamic Stability of Fusion Plasmas

Subjects
Nuclear and High Energy Physics, Tokamak, Settore ING-INF/04, TK, UPGRADE, Cyclotron, Overview, Cyclotron resonance, overview, CONFINEMENT, DETACHMENT, 7. Clean energy, 01 natural sciences, 010305 fluids & plasmas, law.invention, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], CONTROL-SYSTEM, 0103 physical sciences, EUROfusion, 010306 general physics, tokamak, QC, plasma, nuclear fusion, Physics, PLASMA, Divertor, Magnetic confinement fusion, Plasma, Mechanics, TCV, MST1, Condensed Matter Physics, Neutral beam injection, Physics and Astronomy, 13. Climate action, confinement, detachment, Nuclear fusion, control-system, upgrade, TCV, MST1, Beam (structure), Tokamaks
Abstract

The research program of the TCV tokamak ranges from conventional to advanced-tokamak scenarios and alternative divertor configurations, to exploratory plasmas driven by theoretical insight, exploiting the device's unique shaping capabilities. Disruption avoidance by real-time locked mode prevention or unlocking with electron-cyclotron resonance heating (ECRH) was thoroughly documented, using magnetic and radiation triggers. Runaway generation with high-Z noble-gas injection and runaway dissipation by subsequent Ne or Ar injection were studied for model validation. The new 1 MW neutral beam injector has expanded the parameter range, now encompassing ELMy H-modes in an ITER-like shape and nearly non-inductive H-mode discharges sustained by electron cyclotron and neutral beam current drive. In the H-mode, the pedestal pressure increases modestly with nitrogen seeding while fueling moves the density pedestal outwards, but the plasma stored energy is largely uncorrelated to either seeding or fueling. High fueling at high triangularity is key to accessing the attractive small edge-localized mode (type-II) regime. Turbulence is reduced in the core at negative triangularity, consistent with increased confinement and in accord with global gyrokinetic simulations. The geodesic acoustic mode, possibly coupled with avalanche events, has been linked with particle flow to the wall in diverted plasmas. Detachment, scrape-off layer transport, and turbulence were studied in L- and H-modes in both standard and alternative configurations (snowflake, super-X, and beyond). The detachment process is caused by power 'starvation' reducing the ionization source, with volume recombination playing only a minor role. Partial detachment in the H-mode is obtained with impurity seeding and has shown little dependence on flux expansion in standard single-null geometry. In the attached L-mode phase, increasing the outer connection length reduces the in-out heat-flow asymmetry. A doublet plasma, featuring an internal X-point, was achieved successfully, and a transport barrier was observed in the mantle just outside the internal separatrix. In the near future variable-configuration baffles and possibly divertor pumping will be introduced to investigate the effect of divertor closure on exhaust and performance, and 3.5 MW ECRH and 1 MW neutral beam injection heating will be added., This work was supported in part by the Swiss National Science Foundation.

Published
2019
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49. Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade

Author

V. Piergotti, F. Pesamosca, Bogdan Hnat, A. Sperduti, A. Krivska, J. Vicente, Panagiotis Tolias, Emanuele Poli, Matthias Hoelzl, Benedikt Geiger, A. Jardin, J. Ayllon-Guerola, G. Apruzzese, T. Lunt, J. Galdon-Quiroga, Riccardo Maggiora, M. Tardocchi, M. Koubiti, T. Jonsson, Bruce Lipschultz, P. Innocente, A. Gude, I Miron, M. G. Dunne, G. F. Harrer, A. Moro, A. Iantchenko, K. Galazka, P. Poloskei, K. Bogar, Roberto Ambrosino, G. Ferr, Vladimir E. Moiseenko, Istvan Cziegler, L. Guimarais, S. Vartanian, B. Erds, G. Pucella, V. Bobkov, James Buchanan, Raffaele Albanese, Harry M. Meyer, D. Boeyaert, G. F. Matthews, Eva Macusova, V. S. Marchenko, R. Zagórski, J. Buermans, A. Fil, W. Zhang, Giuseppe Gorini, B. Tal, D. Zaloga, Hugo Bufferand, A. Romano, L. Colas, J. Zebrowski, M. Weiland, L. Barrera-Orte, Matjaž Panjan, A.J. Thornton, E. Wolfrum, Miglena Dimitrova, R. M. McDermott, R. Lombroni, O. Tudisco, F. Reimold, E. R. Solano, X. Feng, Petra Bilkova, M. Groth, E. Alessi, D. S. Gahle, Olivier Février, I. Voitsekhovitch, Matthew Carr, A. Bock, O. Vasilovici, C. Ham, Lorenzo Figini, Guglielmo Rubinacci, Peter Lang, Pierre Manas, S. Costea, A. Kirk, F. Causa, J. Adamek, Vu N. M. T., M. Cavedon, O. Grover, Geert Verdoolaege, M. Spolaore, L. Sanchis-Sanchez, P. Bohm, P. V. Kazantzidis, Sarah Newton, M. Tomes, M.-L. Mayoral, J. R. Harrison, C. Mazzotta, H. Reimerdes, Jorge Morales, D. Brunetti, J. Gonzalez-Martin, Tomas Markovic, S. S. Henderson, D. Ricci, J. Juul Rasmussen, F. Janky, S. Saarelma, Z. Popovic, C. Tsironis, J. J. Rasmussen, S. K. Hansen, Sandra C. Chapman, Volker Naulin, H. Arnichand, Roberto Paccagnella, M. Faitsch, Anders Nielsen, M. Kong, V. Igochine, C. Piron, C. Bowman, Jorge Ferreira, D. Sytnykov, K. G. McClements, Olivier Sauter, Ondrej Ficker, Matthias Wiesenberger, T. Ravensbergen, C. Reux, Irena Ivanova-Stanik, Dirk Reiser, M. Bernert, M. Vallar, J-M Moret, M. Gruca, D. I. Refy, P. Cano Megias, Benoit Labit, M. Schubert, Giuliana Sias, O. Bogar, P. J. Mc Carthy, I. Faust, Gergely Papp, F. Matos, J. Garcia, C. Marini, E. L. Sorokovoy, Dimitri Voltolina, George Wilkie, J. M. Santos, R. R. Sheeba, Vladimir Weinzettl, Sergei Kasilov, J. Cerovsky, Matteo Agostini, G. Tardini, Laurie Porte, F. Dolizy, L. Gil, Matthias Komm, A. Dal Molin, B. Sieglin, Roch Kwiatkowski, M. C. C Messmer, Toke Koldborg Jensen, Vinodh Bandaru, Ben F. McMillan, Alessandra Fanni, Daniele Carnevale, Shimpei Futatani, D. P. Coster, V. Korovin, S. E. Sharapov, Patrik Ollus, J. Gath, A. Czarnecka, D. Gallart, M. Peterka, P. Vallejos Olivares, Jernej Kovacic, Nicolas Fedorczak, Silvio Ceccuzzi, L. Piron, J. Rosato, G. Kocsis, Stefan Kragh Nielsen, M. Garcia-Mu oz, Radomir Panek, S. F. Smith, Paolo Bettini, A. Mariani, R. Dejarnac, Lorenzo Frassinetti, D. Douai, L. Garzotti, H. J. Sun, C.K. Tsui, N. den Harder, John Elmerdahl Olsen, F. Bombarda, M. Francesco, Piero Martin, D. Hogeweij, P. Blanchard, F. Bouquey, Gabor Por, Luca Boncagni, Carlo Sozzi, Martin Hron, P. A. Schneider, V. P. Loschiavo, David Terranova, D. Aguiam, D. Choi, M. Gobbin, D. Iglesias, M. Reich, G. Avdeeva, A. Gallo, O. Biletskyi, M. Aradi, F. Liu, M. Griener, Antti Snicker, L. Kripner, Jérôme Bucalossi, L. Hesslow, Nick Walkden, M. Rodriguez-Ramos, T. C. Blanken, Cristian Galperti, F. Jaulmes, G. Calabr, G.A. Rattá, W. Bin, S. Garavaglia, V. Plyusnin, Andreas Frank Martitsch, A. Zisis, Rita Lorenzini, Duccio Testa, M. Passeri, Ola Embréus, N. Krawczyk, K. Särkimäki, Davide Galassi, D. Samaddar, M. Oberkofler, E. Seliunin, D. Brida, P. Buratti, F. Nabais, J. Ongena, J. Likonen, Yann Camenen, M. J. Mantsinen, F. Carpanese, S. Wiesen, P. Piovesan, Mirko Salewski, J. Hawke, Florian Laggner, R. Bilato, M. Wischmeier, L. Pigatto, G. I. Pokol, G. Giruzzi, Jens Madsen, D. Gadariya, L. Stipani, Christian Theiler, J. Stober, Michael Barnes, Timothy Goodman, R. D. Nem, J. J. Dominguez-Palacios Duran, F. Militello, Y. Kulyk, D. J. Cruz Zabala, A. Drenik, P. Manz, M. Scheffer, V. Pericoli Radolfini, B. Tilia, John Omotani, B. Vanovac, B. S. Schneider, E. Fable, Jakub Urban, T. Gyergyek, A. N. Karpushov, M. Farnik, Jakub Seidl, Christopher G. Albert, Antoine Merle, A. Cathey, D. A. Ryan, Sergio Galeani, R. Scannell, A. Havranek, G. de Carolis, C. Soria-Hoyo, S. Gibson, D. Carralero, D. Meshcheriakov, Morten Stejner, B. P. Duval, Francesco Cordella, Mitja Kelemen, Svetlana V. Ratynskaia, Stefano Coda, L. Calacci, C. Cianfarani, Faa Federico Felici, A. C. A. Figueiredo, L. Panaccione, E. Viezzer, Fabio Villone, Daniele Milanesio, Winfried Kernbichler, Mario Sassano, A. Teplukhina, S. Zoletnik, L. Laguardia, P. Molina Cabrera, Taina Kurki-Suonio, D. Micheletti, P. Zanca, Daniel Dunai, S. Feng, J. Decker, Stylianos Varoutis, Lorella Carraro, M. Wensing, Gustavo Granucci, Artur Palha, A. Kappatou, J. Garcia-Lopez, Felix I. Parra, Ye. O. Kazakov, S. Brezinsek, Didier Mazon, A. Lahtinen, I. Paradela Perez, P. Chmielewski, L. Giacomelli, Alessandro Pau, Gianluca Spizzo, R. Delogu, R. J. Akers, H. De Oliveira, Petr Vondracek, F. P. Orsitto, J. Hobirk, L. Xiang, A. Burckhart, B. Maljaars, V. Petrzilka, Ocleto D'Arcangelo, P. David, D. Grekov, Tamás Szepesi, Y. Andr be, P. Hacek, M. Toscano-Jimenez, T. Pütterich, L. Cordaro, V. Nikolaeva, F. Orain, M. Rabinski, C. Ionita-Schrittwieser, T. Tala, Maria Ester Puiatti, A. Casolari, T. Happel, Pär Strand, Benjamin Daniel Dudson, P. Mantica, Z. Huang, D. Colette, G. Ciraolo, Jan Mlynar, W. Suttrop, C. Meineri, J. Horacek, Seppo Sipilä, M. Gospodarczyk, S. Mastrostefano, Jesús Vega, Antti Hakola, Kevin Verhaegh, Roman Schrittwieser, C. Marchetto, M. Willensdorfer, Jari Varje, D. C. van Vugt, J. Faustin, Mathias Hoppe, M. Dreval, A. Perek, C. Angioni, Laure Vermare, U. A. Sheikh, J. F. Rivero-Rodriguez, G. Rubino, S.N. Reznik, Tsv K Popov, S. Nowak, A. S. Jacobsen, J. R. Martin Solis, David Moulton, Heinz Isliker, K. Wu, Anna Salmi, F. Nespoli, S. Elmore, O. Kudlacek, A. Kallenbach, Rok Zaplotnik, D. L. Keeling, L. Giannone, M. Maraschek, Carlos B. da Silva, F. Hitzler, M. Valovic, M. W. Jakubowski, L. Gabellieri, Jozef Varju, Marco Cecconello, M. Valisa, Vlado Menkovski, Gábor Cseh, E. Thoren, T. Eich, R. Coelho, F. Bagnato, Matteo Zuin, Alexander Kendl, G. Rocchi, G. Pautasso, D. Naydenkova, R. O. Pavlichenko, M. Fontana, Lionello Marrelli, Tommaso Bolzonella, Nicola Vianello, Pascale Hennequin, R. Ochoukov, Tom Wauters, Christian Hopf, Ch. Fuchs, E. Giovannozzi, Fulvio Auriemma, Roberto Maurizio, Stefan Buller, Massimo Nocente, K. Krieger, G. Grenfell, N. Rispoli, R. Dux, Barbara Cannas, Laboratoire de Physique des Plasmas (LPP), Université Paris-Saclay-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École polytechnique (X)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Labit, B., Eich, T., Harrer, G. F., Wolfrum, E., Bernert, M., Dunne, M. G., Frassinetti, L., Hennequin, P., Maurizio, R., Merle, A., Meyer, H., Saarelma, S., Sheikh, U., Adamek, J., Agostini, M., Aguiam, D., Akers, R., Albanese, R., Albert, C., Alessi, E., Ambrosino, R., Andr be, Y., Angioni, C., Apruzzese, G., Aradi, M., Arnichand, H., Auriemma, F., Avdeeva, G., Ayllon-Guerola, J. M., Bagnato, F., Bandaru, V. K., Barnes, M., Barrera-Orte, L., Bettini, P., Bilato, R., Biletskyi, O., Bilkova, P., Bin, W., Blanchard, P., Blanken, T., Bobkov, V., Bock, A., Boeyaert, D., Bogar, K., Bogar, O., Bohm, P., Bolzonella, T., Bombarda, F., Boncagni, L., Bouquey, F., Bowman, C., Brezinsek, S., Brida, D., Brunetti, D., Bucalossi, J., Buchanan, J., Buermans, J., Bufferand, H., Buller, S., Buratti, P., Burckhart, A., Calabr, G., Calacci, L., Camenen, Y., Cannas, B., Cano Megias, P., Carnevale, D., Carpanese, F., Carr, M., Carralero, D., Carraro, L., Casolari, A., Cathey, A., Causa, F., Cavedon, M., Cecconello, M., Ceccuzzi, S., Cerovsky, J., Chapman, S., Chmielewski, P., Choi, D., Cianfarani, C., Ciraolo, G., Coda, S., Coelho, R., Colas, L., Colette, D., Cordaro, L., Cordella, F., Costea, S., Coster, D., Cruz Zabala, D. J., Cseh, G., Czarnecka, A., Cziegler, I., D'Arcangelo, O., Dal Molin, A., David, P., De Carolis, G., De Oliveira, H., Decker, J., Dejarnac, R., Delogu, R., Den Harder, N., Dimitrova, M., Dolizy, F., Dominguez-Palacios Duran, J. J., Douai, D., Drenik, A., Dreval, M., Dudson, B., Dunai, D., Duval, B. P., Dux, R., Elmore, S., Embreus, O., Erds, B., Fable, E., Faitsch, M., Fanni, A., Farnik, M., Faust, I., Faustin, J., Fedorczak, N., Felici, F., Feng, S., Feng, X., Ferreira, J., Ferr, G., Fevrier, O., Ficker, O., Figini, L., Figueiredo, A., Fil, A., Fontana, M., Francesco, M., Fuchs, C., Futatani, S., Gabellieri, L., Gadariya, D., Gahle, D., Galassi, D., Galazka, K., Galdon-Quiroga, J., Galeani, S., Gallart, D., Gallo, A., Galperti, C., Garavaglia, S., Garcia, J., Garcia-Lopez, J., Garcia-Mu oz, M., Garzotti, L., Gath, J., Geiger, B., Giacomelli, L., Giannone, L., Gibson, S., Gil, L., Giovannozzi, E., Giruzzi, G., Gobbin, M., Gonzalez-Martin, J., Goodman, T. P., Gorini, G., Gospodarczyk, M., Granucci, G., Grekov, D., Grenfell, G., Griener, M., Groth, M., Grover, O., Gruca, M., Gude, A., Guimarais, L., Gyergyek, T., Hacek, P., Hakola, A., Ham, C., Happel, T., Harrison, J., Havranek, A., Hawke, J., Henderson, S., Hesslow, L., Hitzler, F., Hnat, B., Hobirk, J., Hoelzl, M., Hogeweij, D., Hopf, C., Hoppe, M., Horacek, J., Hron, M., Huang, Z., Iantchenko, A., Iglesias, D., Igochine, V., Innocente, P., Ionita-Schrittwieser, C., Isliker, H., Ivanova-Stanik, I., Jacobsen, A., Jakubowski, M., Janky, F., Jardin, A., Jaulmes, F., Jensen, T., Jonsson, T., Kallenbach, A., Kappatou, A., Karpushov, A., Kasilov, S., Kazakov, Y., Kazantzidis, P. V., Keeling, D., Kelemen, M., Kendl, A., Kernbichler, W., Kirk, A., Kocsis, G., Komm, M., Kong, M., Korovin, V., Koubiti, M., Kovacic, J., Krawczyk, N., Krieger, K., Kripner, L., Krivska, A., Kudlacek, O., Kulyk, Y., Kurki-Suonio, T., Kwiatkowski, R., Laggner, F., Laguardia, L., Lahtinen, A., Lang, P., Likonen, J., Lipschultz, B., Liu, F., Lombroni, R., Lorenzini, R., Loschiavo, V. P., Lunt, T., Macusova, E., Madsen, J., Maggiora, R., Maljaars, B., Manas, P., Mantica, P., Mantsinen, M. J., Manz, P., Maraschek, M., Marchenko, V., Marchetto, C., Mariani, A., Marini, C., Markovic, T., Marrelli, L., Martin, P., Martin Solis, J. R., Martitsch, A., Mastrostefano, S., Matos, F., Matthews, G., Mayoral, M. -L., Mazon, D., Mazzotta, C., Mc Carthy, P., Mcclements, K., Mcdermott, R., Mcmillan, B., Meineri, C., Menkovski, V., Meshcheriakov, D., Messmer, M., Micheletti, D., Milanesio, D., Militello, F., Miron, I. G., Mlynar, J., Moiseenko, V., Molina Cabrera, P. A., Morales, J., Moret, J. -M., Moro, A., Moulton, D., Nabais, F., Naulin, V., Naydenkova, D., Nem, R. D., Nespoli, F., Newton, S., Nielsen, A. H., Nielsen, S. K., Nikolaeva, V., Nocente, M., Nowak, S., Oberkofler, M., Ochoukov, R., Ollus, P., Olsen, J., Omotani, J., Ongena, J., Orain, F., Orsitto, F. P., Paccagnella, R., Palha, A., Panaccione, L., Panek, R., Panjan, M., Papp, G., Paradela Perez, I., Parra, F., Passeri, M., Pau, A., Pautasso, G., Pavlichenko, R., Perek, A., Pericoli Radolfini, V., Pesamosca, F., Peterka, M., Petrzilka, V., Piergotti, V., Pigatto, L., Piovesan, P., Piron, C., Piron, L., Plyusnin, V., Pokol, G., Poli, E., Poloskei, P., Popov, T., Popovic, Z., Por, G., Porte, L., Pucella, G., Puiatti, M. E., Putterich, T., Rabinski, M., Juul Rasmussen, J., Rasmussen, J., Ratta, G. A., Ratynskaia, S., Ravensbergen, T., Refy, D., Reich, M., Reimerdes, H., Reimold, F., Reiser, D., Reux, C., Reznik, S., Ricci, D., Rispoli, N., Rivero-Rodriguez, J. F., Rocchi, G., Rodriguez-Ramos, M., Romano, A., Rosato, J., Rubinacci, G., Rubino, G., Ryan, D. A., Salewski, M., Salmi, A., Samaddar, D., Sanchis-Sanchez, L., Santos, J., Sarkimaki, K., Sassano, M., Sauter, O., Scannell, R., Scheffer, M., Schneider, B. S., Schneider, P., Schrittwieser, R., Schubert, M., Seidl, J., Seliunin, E., Sharapov, S., Sheeba, R. R., Sias, G., Sieglin, B., Silva, C., Sipila, S., Smith, S., Snicker, A., Solano, E. R., Hansen, S. K., Soria-Hoyo, C., Sorokovoy, E., Sozzi, C., Sperduti, A., Spizzo, G., Spolaore, M., Stejner, M., Stipani, L., Stober, J., Strand, P., Sun, H., Suttrop, W., Sytnykov, D., Szepesi, T., Tal, B., Tala, T., Tardini, G., Tardocchi, M., Teplukhina, A., Terranova, D., Testa, D., Theiler, C., Thoren, E., Thornton, A., Tilia, B., Tolias, P., Tomes, M., Toscano-Jimenez, M., Tsironis, C., Tsui, C., Tudisco, O., Urban, J., Valisa, M., Vallar, M., Vallejos Olivares, P., Valovic, M., Van Vugt, D., Vanovac, B., Varje, J., Varju, J., Varoutis, S., Vartanian, S., Vasilovici, O., Vega, J., Verdoolaege, G., Verhaegh, K., Vermare, L., Vianello, N., Vicente, J., Viezzer, E., Villone, F., Voitsekhovitch, I., Voltolina, D., Vondracek, P., Vu, N. M. T., Walkden, N., Wauters, T., Weiland, M., Weinzettl, V., Wensing, M., Wiesen, S., Wiesenberger, M., Wilkie, G., Willensdorfer, M., Wischmeier, M., Wu, K., Xiang, L., Zagorski, R., Zaloga, D., Zanca, P., Zaplotnik, R., Zebrowski, J., Zhang, W., Zisis, A., Zoletnik, S., Zuin, M., Swiss Federal Institute of Technology Lausanne, Max-Planck-Institut für Plasmaphysik, Vienna University of Technology, KTH Royal Institute of Technology, Université Paris-Saclay, JET, Czech Academy of Sciences, National Research Council of Italy, University of Lisbon, University of Naples Federico II, Graz University of Technology, University of Naples Parthenope, Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile, Danmarks Tekniske Universitet, University of Seville, University of Oxford, EUROfusion Programme Management Unit, National Science Center Kharkov Institute of Physics and Technology, Eindhoven University of Technology, Forschungszentrum Jülich, CEA, University of York, Royal Military Academy, Chalmers University of Technology, Tuscia University, Università di Roma Tor Vergata, CNRS, University of Cagliari, CIEMAT, Uppsala University, University of Warwick, Soltan Institute for Nuclear Studies, University of Innsbruck, Hungarian Academy of Sciences, Budapest University of Technology and Economics, Durham University, BarcelonaTech, University of Strathclyde, Barcelona Supercomputing Center, University of Milan - Bicocca, Karlsruhe Institute of Technology, Fusion and Plasma Physics, J. Stefan Institute, VTT Technical Research Centre of Finland, Dutch Institute for Fundamental Energy Research, Aristotle University of Thessaloniki, National Technical University of Athens, National Centre for Nuclear Research, University of Helsinki, Université Côte d'Azur, Polytechnic University of Turin, NASU - Institute of Nuclear Research, University of Cassino and Southern Lazio, University College Cork, National Institute for Laser, Plasma and Radiation Physics, Department of Applied Physics, Sofia University St. Kliment Ohridski, Ghent University, Aalto-yliopisto, Aalto University, Labit, B, Eich, T, Harrer, G, Wolfrum, E, Bernert, M, Dunne, M, Frassinetti, L, Hennequin, P, Maurizio, R, Merle, A, Meyer, H, Saarelma, S, Sheikh, U, Adamek, J, Agostini, M, Aguiam, D, Akers, R, Albanese, R, Albert, C, Alessi, E, Ambrosino, R, Andr be, Y, Angioni, C, Apruzzese, G, Aradi, M, Arnichand, H, Auriemma, F, Avdeeva, G, Ayllon-Guerola, J, Bagnato, F, Bandaru, V, Barnes, M, Barrera-Orte, L, Bettini, P, Bilato, R, Biletskyi, O, Bilkova, P, Bin, W, Blanchard, P, Blanken, T, Bobkov, V, Bock, A, Boeyaert, D, Bogar, K, Bogar, O, Bohm, P, Bolzonella, T, Bombarda, F, Boncagni, L, Bouquey, F, Bowman, C, Brezinsek, S, Brida, D, Brunetti, D, Bucalossi, J, Buchanan, J, Buermans, J, Bufferand, H, Buller, S, Buratti, P, Burckhart, A, Calabr, G, Calacci, L, Camenen, Y, Cannas, B, Cano Megias, P, Carnevale, D, Carpanese, F, Carr, M, Carralero, D, Carraro, L, Casolari, A, Cathey, A, Causa, F, Cavedon, M, Cecconello, M, Ceccuzzi, S, Cerovsky, J, Chapman, S, Chmielewski, P, Choi, D, Cianfarani, C, Ciraolo, G, Coda, S, Coelho, R, Colas, L, Colette, D, Cordaro, L, Cordella, F, Costea, S, Coster, D, Cruz Zabala, D, Cseh, G, Czarnecka, A, Cziegler, I, D'Arcangelo, O, Dal Molin, A, David, P, De Carolis, G, De Oliveira, H, Decker, J, Dejarnac, R, Delogu, R, Den Harder, N, Dimitrova, M, Dolizy, F, Dominguez-Palacios Duran, J, Douai, D, Drenik, A, Dreval, M, Dudson, B, Dunai, D, Duval, B, Dux, R, Elmore, S, Embreus, O, Erds, B, Fable, E, Faitsch, M, Fanni, A, Farnik, M, Faust, I, Faustin, J, Fedorczak, N, Felici, F, Feng, S, Feng, X, Ferreira, J, Ferr, G, Fevrier, O, Ficker, O, Figini, L, Figueiredo, A, Fil, A, Fontana, M, Francesco, M, Fuchs, C, Futatani, S, Gabellieri, L, Gadariya, D, Gahle, D, Galassi, D, Galazka, K, Galdon-Quiroga, J, Galeani, S, Gallart, D, Gallo, A, Galperti, C, Garavaglia, S, Garcia, J, Garcia-Lopez, J, Garcia-Mu oz, M, Garzotti, L, Gath, J, Geiger, B, Giacomelli, L, Giannone, L, Gibson, S, Gil, L, Giovannozzi, E, Giruzzi, G, Gobbin, M, Gonzalez-Martin, J, Goodman, T, Gorini, G, Gospodarczyk, M, Granucci, G, Grekov, D, Grenfell, G, Griener, M, Groth, M, Grover, O, Gruca, M, Gude, A, Guimarais, L, Gyergyek, T, Hacek, P, Hakola, A, Ham, C, Happel, T, Harrison, J, Havranek, A, Hawke, J, Henderson, S, Hesslow, L, Hitzler, F, Hnat, B, Hobirk, J, Hoelzl, M, Hogeweij, D, Hopf, C, Hoppe, M, Horacek, J, Hron, M, Huang, Z, Iantchenko, A, Iglesias, D, Igochine, V, Innocente, P, Ionita-Schrittwieser, C, Isliker, H, Ivanova-Stanik, I, Jacobsen, A, Jakubowski, M, Janky, F, Jardin, A, Jaulmes, F, Jensen, T, Jonsson, T, Kallenbach, A, Kappatou, A, Karpushov, A, Kasilov, S, Kazakov, Y, Kazantzidis, P, Keeling, D, Kelemen, M, Kendl, A, Kernbichler, W, Kirk, A, Kocsis, G, Komm, M, Kong, M, Korovin, V, Koubiti, M, Kovacic, J, Krawczyk, N, Krieger, K, Kripner, L, Krivska, A, Kudlacek, O, Kulyk, Y, Kurki-Suonio, T, Kwiatkowski, R, Laggner, F, Laguardia, L, Lahtinen, A, Lang, P, Likonen, J, Lipschultz, B, Liu, F, Lombroni, R, Lorenzini, R, Loschiavo, V, Lunt, T, Macusova, E, Madsen, J, Maggiora, R, Maljaars, B, Manas, P, Mantica, P, Mantsinen, M, Manz, P, Maraschek, M, Marchenko, V, Marchetto, C, Mariani, A, Marini, C, Markovic, T, Marrelli, L, Martin, P, Martin Solis, J, Martitsch, A, Mastrostefano, S, Matos, F, Matthews, G, Mayoral, M, Mazon, D, Mazzotta, C, Mc Carthy, P, Mcclements, K, Mcdermott, R, Mcmillan, B, Meineri, C, Menkovski, V, Meshcheriakov, D, Messmer, M, Micheletti, D, Milanesio, D, Militello, F, Miron, I, Mlynar, J, Moiseenko, V, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Moulton, D, Nabais, F, Naulin, V, Naydenkova, D, Nem, R, Nespoli, F, Newton, S, Nielsen, A, Nielsen, S, Nikolaeva, V, Nocente, M, Nowak, S, Oberkofler, M, Ochoukov, R, Ollus, P, Olsen, J, Omotani, J, Ongena, J, Orain, F, Orsitto, F, Paccagnella, R, Palha, A, Panaccione, L, Panek, R, Panjan, M, Papp, G, Paradela Perez, I, Parra, F, Passeri, M, Pau, A, Pautasso, G, Pavlichenko, R, Perek, A, Pericoli Radolfini, V, Pesamosca, F, Peterka, M, Petrzilka, V, Piergotti, V, Pigatto, L, Piovesan, P, Piron, C, Piron, L, Plyusnin, V, Pokol, G, Poli, E, Poloskei, P, Popov, T, Popovic, Z, Por, G, Porte, L, Pucella, G, Puiatti, M, Putterich, T, Rabinski, M, Juul Rasmussen, J, Rasmussen, J, Ratta, G, Ratynskaia, S, Ravensbergen, T, Refy, D, Reich, M, Reimerdes, H, Reimold, F, Reiser, D, Reux, C, Reznik, S, Ricci, D, Rispoli, N, Rivero-Rodriguez, J, Rocchi, G, Rodriguez-Ramos, M, Romano, A, Rosato, J, Rubinacci, G, Rubino, G, Ryan, D, Salewski, M, Salmi, A, Samaddar, D, Sanchis-Sanchez, L, Santos, J, Sarkimaki, K, Sassano, M, Sauter, O, Scannell, R, Scheffer, M, Schneider, B, Schneider, P, Schrittwieser, R, Schubert, M, Seidl, J, Seliunin, E, Sharapov, S, Sheeba, R, Sias, G, Sieglin, B, Silva, C, Sipila, S, Smith, S, Snicker, A, Solano, E, Hansen, S, Soria-Hoyo, C, Sorokovoy, E, Sozzi, C, Sperduti, A, Spizzo, G, Spolaore, M, Stejner, M, Stipani, L, Stober, J, Strand, P, Sun, H, Suttrop, W, Sytnykov, D, Szepesi, T, Tal, B, Tala, T, Tardini, G, Tardocchi, M, Teplukhina, A, Terranova, D, Testa, D, Theiler, C, Thoren, E, Thornton, A, Tilia, B, Tolias, P, Tomes, M, Toscano-Jimenez, M, Tsironis, C, Tsui, C, Tudisco, O, Urban, J, Valisa, M, Vallar, M, Vallejos Olivares, P, Valovic, M, Van Vugt, D, Vanovac, B, Varje, J, Varju, J, Varoutis, S, Vartanian, S, Vasilovici, O, Vega, J, Verdoolaege, G, Verhaegh, K, Vermare, L, Vianello, N, Vicente, J, Viezzer, E, Villone, F, Voitsekhovitch, I, Voltolina, D, Vondracek, P, Vu, N, Walkden, N, Wauters, T, Weiland, M, Weinzettl, V, Wensing, M, Wiesen, S, Wiesenberger, M, Wilkie, G, Willensdorfer, M, Wischmeier, M, Wu, K, Xiang, L, Zagorski, R, Zaloga, D, Zanca, P, Zaplotnik, R, Zebrowski, J, Zhang, W, Zisis, A, Zoletnik, S, Zuin, M, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Control Systems Technology, Science and Technology of Nuclear Fusion, Data Mining, Sensorics for fusion reactors, and Magneto-Hydro-Dynamic Stability of Fusion Plasmas

Subjects
Nuclear and High Energy Physics, Settore ING-INF/04, Work package, grassy ELM, ballooning modes, Nuclear physics, 01 natural sciences, Flattening, Ballooning, 010305 fluids & plasmas, grassy ELMs, separatrix density, ASDEX Upgrade, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, Edge-localized mode, QC, H-mode, plasma triangularity, type-II ELMs, Physics, Física [Àrees temàtiques de la UPC], type-II ELM, Plasma, Condensed Matter Physics, Null (physics), Shear (sheet metal), Física nuclear, Atomic physics, ballooning mode
Abstract

Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened. Peer Reviewed Article escrit per 365 autors/autores: Labit, B.; Eich, T.; Harrer, G. F.; Wolfrum, E.; Bernert, M.; Dunne, M. G.; Frassinetti, L.; Hennequin, P.; Maurizio, R.; Merle, A.; Meyer, H.; Saarelma, S.; Sheikh, U.; Adamek, J.; Agostini, M.; Aguiam, D.; Akers, R.; Albanese, R.; Albert, C.; Alessi, E.; Ambrosino, R.; Andr be, Y.; Angioni, C.; Apruzzese, G.; Aradi, M.; Arnichand, H.; Auriemma, F.; Avdeeva, G.; Ayllon-Guerola, J. M.; Bagnato, F.; Bandaru, V. K.; Barnes, M.; Barrera-Orte, L.; Bettini, P.; Bilato, R.; Biletskyi, O.; Bilkova, P.; Bin, W.; Blanchard, P.; Blanken, T.; Bobkov, V.; Bock, A.; Boeyaert, D.; Bogar, K.; Bogar, O.; Bohm, P.; Bolzonella, T.; Bombarda, F.; Boncagni, L.; Bouquey, F.; Bowman, C.; Brezinsek, S.; Brida, D.; Brunetti, D.; Bucalossi, J.; Buchanan, J.; Buermans, J.; Bufferand, H.; Buller, S.; Buratti, P.; Burckhart, A.; Calabr, G.; Calacci, L.; Camenen, Y.; Cannas, B.; Cano Megías, P.; Carnevale, D.; Carpanese, F.; Carr, M.; Carralero, D.; Carraro, L.; Casolari, A.; Cathey, A.; Causa, F.; Cavedon, M.; Cecconello, M.; Ceccuzzi, S.; Cerovsky, J.; Chapman, S.; Chmielewski, P.; Choi, D.; Cianfarani, C.; Ciraolo, G.; Coda, S.; Coelho, R.; Colas, L.; Colette, D.; Cordaro, L.; Cordella, F.; Costea, S.; Coster, D.; Cruz Zabala, D. J.; Cseh, G.; Czarnecka, A.; Cziegler, I.; D’Arcangelo, O.; Dal Molin, A.; David, P.; De Carolis, G.; De Oliveira, H.; Decker, J.; Dejarnac, R.; Delogu, R.; Den Harder, N.; Dimitrova, M.; Dolizy, F.; Domínguez-Palacios Durán, J. J.; Douai, D.; Drenik, A.; Dreval, M.; Dudson, B.; Dunai, D.; Duval, B. P.; Dux, R.; Elmore, S.; Embréus, O.; Erds, B.; Fable, E.; Faitsch, M.; Fanni, A.; Farnik, M.; Faust, I.; Faustin, J.; Fedorczak, N.; Felici, F.; Feng, S.; Feng, X.; Ferreira, J.; Ferr, G.; Février, O.; Ficker, O.; Figini, L.; Figueiredo, A.; Fil, A.; Fontana, M.; Francesco, M.; Fuchs, C.; Futatani, S.; Gabellieri, L.; Gadariya, D.; Gahle, D.; Galassi, D.; Gałązka, K.; Galdon-Quiroga, J.; Galeani, S.; Gallart, D.; Gallo, A.; Galperti, C.; Garavaglia, S.; Garcia, J.; Garcia-Lopez, J.; Garcia-Mu oz, M.; Garzotti, L.; Gath, J.; Geiger, B.; Giacomelli, L.; Giannone, L.; Gibson, S.; Gil, L.; Giovannozzi, E.; Giruzzi, G.; Gobbin, M.; Gonzalez-Martin, J.; Goodman, T. P.; Gorini, G.; Gospodarczyk, M.; Granucci, G.; Grekov, D. 1; Grenfell, G.; Griener, M.; Groth, M.; Grover, O.; Gruca, M.; Gude, A.; Guimarais, L.; Gyergyek, T.; Hacek, P.; Hakola, A.; Ham, C.; Happel, T.; Harrison, J.; Havranek, A.; Hawke, J.; Henderson, S.; Hesslow, L.; Hitzler, F.; Hnat, B.; Hobirk, J.; Hoelzl, M.; Hogeweij, D.; Hopf, C.; Hoppe, M.; Horacek, J.; Hron, M.; Huang, Z.; Iantchenko, A.; Iglesias, D.; Igochine, V.; Innocente, P.; Ionita-Schrittwieser, C.; Isliker, H.; Ivanova-Stanik, I.; Jacobsen, A.; Jakubowski, M.; Janky, F.; Jardin, A.; Jaulmes, F.; Jensen, T.; Jonsson, T.; Kallenbach, A.; Kappatou, A.; Karpushov, A.; Kasilov, S.; Kazakov, Y.; Kazantzidis, P. V.; Keeling, D.; Kelemen, M.; Kendl, A.; Kernbichler, W.; Kirk, A.; Kocsis, G.; Komm, M.; Kong, M.; Korovin, V.; Koubiti, M.; Kovacic, J.; Krawczyk, N.; Krieger, K.; Kripner, L.; Křivská, A.; Kudlacek, O.; Kulyk, Y.; Kurki-Suonio, T.; Kwiatkowski, R.; Laggner, F.; Laguardia, L.; Lahtinen, A.; Lang, P.; Likonen, J.; Lipschultz, B.; Liu, F.; Lombroni, R.; Lorenzini, R.; Loschiavo, V. P.; Lunt, T.; MacUsova, E.; Madsen, J.; Maggiora, R.; Maljaars, B.; Manas, P.; Mantica, P.; Mantsinen, M. J.; Manz, P.; Maraschek, M.; Marchenko, V.; Marchetto, C.; Mariani, A.; Marini, C.; Markovic, T.; Marrelli, L.; Martin, P.; Martín Solís, J. R.; Martitsch, A.; Mastrostefano, S.; Matos, F.; Matthews, G.; Mayoral, M.-L.; Mazon, D.; Mazzotta, C.; Mc Carthy, P.; McClements, K.; McDermott, R.; McMillan, B.; Meineri, C.; Menkovski, V.; Meshcheriakov, D.; Messmer, M.; Micheletti, D.; Milanesio, D.; Militello, F.; Miron, I. G.; Mlynar, J.; Moiseenko, V.; Molina Cabrera, P. A.; Morales, J.; Moret, J.-M.; Moro, A.; Moulton, D.; Nabais, F.; Naulin, V.; Naydenkova, D.; Nem, R. D.; Nespoli, F.; Newton, S.; Nielsen, A. H.; Nielsen, S. K.; Nikolaeva, V.; Nocente, M.; Nowak, S.; Oberkofler, M.; Ochoukov, R.; Ollus, P.; Olsen, J.; Omotani, J.; Ongena, J.; Orain, F.; Orsitto, F. P.; Paccagnella, R.; Palha, A.; Panaccione, L.; Panek, R.; Panjan, M.; Papp, G.; Paradela Perez, I.; Parra, F.; Passeri, M.; Pau, A.; Pautasso, G.; Pavlichenko, R.; Perek, A.; Pericoli Radolfini, V.; Pesamosca, F.; Peterka, M.; Petrzilka, V.; Piergotti, V.; Pigatto, L.; Piovesan, P.; Piron, C.; Piron, L.; Plyusnin, V.; Pokol, G.; Poli, E.; Pölöskei, P.; Popov, T.; Popovic, Z.; Pór, G.; Porte, L.; Pucella, G.; Puiatti, M. E.; Pütterich, T.; Rabinski, M.; Juul Rasmussen, J.; Rasmussen, J.; Rattá, G. A.; Ratynskaia, S.; Ravensbergen, T.; Réfy, D.; Reich, M.; Reimerdes, H.; Reimold, F.; Reiser, D.; Reux, C.; Reznik, S.; Ricci, D.; Rispoli, N.; Rivero-Rodriguez, J. F.; Rocchi, G.; Rodriguez-Ramos, M.; Romano, A.; Rosato, J.; Rubinacci, G.; Rubino, G.; Ryan, D. A.; Salewski, M.; Salmi, A.; Samaddar, D.; Sanchis-Sanchez, L.; Santos, J.; Särkimäki, K.; Sassano, M.; Sauter, O.; Scannell, R.; Scheffer, M.; Schneider, B. S.; Schneider, P.; Schrittwieser, R.; Schubert, M.; Seidl, J.; Seliunin, E.; Sharapov, S.; Sheeba, R. R.; Sias, G.; Sieglin, B.; Silva, C.; Sipilä, S.; Smith, S.; Snicker, A.; Solano, E. R.; Hansen, S. K.; Soria-Hoyo, C.; Sorokovoy, E.; Sozzi, C.; Sperduti, A.; Spizzo, G.; Spolaore, M.; Stejner, M.; Stipani, L.; Stober, J.; Strand, P.; Sun, H.; Suttrop, W.; Sytnykov, D.; Szepesi, T.; Tál, B.; Tala, T.; Tardini, G.; Tardocchi, M.; Teplukhina, A.; Terranova, D.; Testa, D.; Theiler, C.; Thorén, E.; Thornton, A.; Tilia, B.; Tolias, P.; Tomes, M.; Toscano-Jimenez, M.; Tsironis, C.; Tsui, C.; Tudisco, O.; Urban, J.; Valisa, M.; Vallar, M.; Vallejos Olivares, P.; Valovic, M.; Van Vugt, D.; Vanovac, B.; Varje, J.; Varju, J.; Varoutis, S. 1; Vartanian, S.; Vasilovici, O.; Vega, J.; Verdoolaege, G.; Verhaegh, K.; Vermare, L.; Vianello, N.; Vicente, J.; Viezzer, E.; Villone, F.; Voitsekhovitch, I.; Voltolina, D.; Vondracek, P.; Vu, N. M. T.; Walkden, N.; Wauters, T.; Weiland, M.; Weinzettl, V.; Wensing, M.; Wiesen, S.; Wiesenberger, M.; Wilkie, G.; Willensdorfer, M.; Wischmeier, M.; Wu, K.; Xiang, L.; Zagorski, R.; Zaloga, D.; Zanca, P.; Zaplotnik, R.; Zebrowski, J.; Zhang, W.; Zisis, A.; Zoletnik, S.; Zuin, M.

Published
2019
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50. Overview of the TCV tokamak experimental programme

Author

H. Reimerdes, M. Agostini, E. Alessi, S. Alberti, Y. Andrebe, H. Arnichand, J. Balbin, F. Bagnato, M. Baquero-Ruiz, M. Bernert, W. Bin, P. Blanchard, T.C. Blanken, J.A. Boedo, D. Brida, S. Brunner, C. Bogar, O. Bogar, T. Bolzonella, F. Bombarda, F. Bouquey, C. Bowman, D. Brunetti, J. Buermans, H. Bufferand, L. Calacci, Y. Camenen, S. Carli, D. Carnevale, F. Carpanese, F. Causa, J. Cavalier, M. Cavedon, J.A. Cazabonne, J. Cerovsky, R. Chandra, A. Chandrarajan Jayalekshmi, O. Chellaï, P. Chmielewski, D. Choi, G. Ciraolo, I.G.J. Classen, S. Coda, C. Colandrea, A. Dal Molin, P. David, M.R. de Baar, J. Decker, W. Dekeyser, H. de Oliveira, D. Douai, M. Dreval, M.G. Dunne, B.P. Duval, S. Elmore, O. Embreus, F. Eriksson, M. Faitsch, G. Falchetto, M. Farnik, A. Fasoli, N. Fedorczak, F. Felici, O. Février, O. Ficker, A. Fil, M. Fontana, E. Fransson, L. Frassinetti, I. Furno, D.S. Gahle, D. Galassi, K. Galazka, C. Galperti, S. Garavaglia, M. Garcia-Munoz, B. Geiger, M. Giacomin, G. Giruzzi, M. Gobbin, T. Golfinopoulos, T. Goodman, S. Gorno, G. Granucci, J.P. Graves, M. Griener, M. Gruca, T. Gyergyek, R. Haelterman, A. Hakola, W. Han, T. Happel, G. Harrer, J.R. Harrison, S. Henderson, G.M.D. Hogeweij, J.-P. Hogge, M. Hoppe, J. Horacek, Z. Huang, A. Iantchenko, P. Innocente, K. Insulander Björk, C. Ionita-Schrittweiser, H. Isliker, A. Jardin, R.J.E. Jaspers, R. Karimov, A.N. Karpushov, Y. Kazakov, M. Komm, M. Kong, J. Kovacic, O. Krutkin, O. Kudlacek, U. Kumar, R. Kwiatkowski, B. Labit, L. Laguardia, J.T. Lammers, E. Laribi, E. Laszynska, A. Lazaros, O. Linder, B. Linehan, B. Lipschultz, X. Llobet, J. Loizu, T. Lunt, E. Macusova, Y. Marandet, M. Maraschek, G. Marceca, C. Marchetto, S. Marchioni, E.S. Marmar, Y. Martin, L. Martinelli, F. Matos, R. Maurizio, M.-L. Mayoral, D. Mazon, V. Menkovski, A. Merle, G. Merlo, H. Meyer, K. Mikszuta-Michalik, P.A. Molina Cabrera, J. Morales, J.-M. Moret, A. Moro, D. Moulton, H. Muhammed, O. Myatra, D. Mykytchuk, F. Napoli, R.D. Nem, A.H. Nielsen, M. Nocente, S. Nowak, N. Offeddu, J. Olsen, F.P. Orsitto, O. Pan, G. Papp, A. Pau, A. Perek, F. Pesamosca, Y. Peysson, L. Pigatto, C. Piron, M. Poradzinski, L. Porte, T. Pütterich, M. Rabinski, H. Raj, J.J. Rasmussen, G.A. Rattá, T. Ravensbergen, D. Ricci, P. Ricci, N. Rispoli, F. Riva, J.F. Rivero-Rodriguez, M. Salewski, O. Sauter, B.S. Schmidt, R. Schrittweiser, S. Sharapov, U.A. Sheikh, B. Sieglin, M. Silva, A. Smolders, A. Snicker, C. Sozzi, M. Spolaore, A. Stagni, L. Stipani, G. Sun, T. Tala, P. Tamain, K. Tanaka, A. Tema Biwole, D. Terranova, J.L. Terry, D. Testa, C. Theiler, A. Thornton, A. Thrysøe, H. Torreblanca, C.K. Tsui, D. Vaccaro, M. Vallar, M. van Berkel, D. Van Eester, R.J.R. van Kampen, S. Van Mulders, K. Verhaegh, T. Verhaeghe, N. Vianello, F. Villone, E. Viezzer, B. Vincent, I. Voitsekhovitch, N.M.T. Vu, N. Walkden, T. Wauters, H. Weisen, N. Wendler, M. Wensing, F. Widmer, S. Wiesen, M. Wischmeier, T.A. Wijkamp, D. Wünderlich, C. Wüthrich, V. Yanovskiy, J. Zebrowski, the EUROfusion MST1 Team, EUROfusion MST1 Team, Control Systems Technology, Liquid metal heat shields, Science and Technology of Nuclear Fusion, Group Heemels, Mechanical Engineering, Data Mining, EAISI Health, ICMS Affiliated, EAISI High Tech Systems, Applied Physics and Science Education, Reimerdes, H, Agostini, M, Alessi, E, Alberti, S, Andrebe, Y, Arnichand, H, Balbin, J, Bagnato, F, Baquero-Ruiz, M, Bernert, M, Bin, W, Blanchard, P, Blanken, T, Boedo, J, Brida, D, Brunner, S, Bogar, C, Bogar, O, Bolzonella, T, Bombarda, F, Bouquey, F, Bowman, C, Brunetti, D, Buermans, J, Bufferand, H, Calacci, L, Camenen, Y, Carli, S, Carnevale, D, Carpanese, F, Causa, F, Cavalier, J, Cavedon, M, Cazabonne, J, Cerovsky, J, Chandra, R, Chandrarajan Jayalekshmi, A, Chellai, O, Chmielewski, P, Choi, D, Ciraolo, G, Classen, I, Coda, S, Colandrea, C, Dal Molin, A, David, P, De Baar, M, Decker, J, Dekeyser, W, De Oliveira, H, Douai, D, Dreval, M, Dunne, M, Duval, B, Elmore, S, Embreus, O, Eriksson, F, Faitsch, M, Falchetto, G, Farnik, M, Fasoli, A, Fedorczak, N, Felici, F, Fevrier, O, Ficker, O, Fil, A, Fontana, M, Fransson, E, Frassinetti, L, Furno, I, Gahle, D, Galassi, D, Galazka, K, Galperti, C, Garavaglia, S, Garcia-Munoz, M, Geiger, B, Giacomin, M, Giruzzi, G, Gobbin, M, Golfinopoulos, T, Goodman, T, Gorno, S, Granucci, G, Graves, J, Griener, M, Gruca, M, Gyergyek, T, Haelterman, R, Hakola, A, Han, W, Happel, T, Harrer, G, Harrison, J, Henderson, S, Hogeweij, G, Hogge, J, Hoppe, M, Horacek, J, Huang, Z, Iantchenko, A, Innocente, P, Insulander Bjork, K, Ionita-Schrittweiser, C, Isliker, H, Jardin, A, Jaspers, R, Karimov, R, Karpushov, A, Kazakov, Y, Komm, M, Kong, M, Kovacic, J, Krutkin, O, Kudlacek, O, Kumar, U, Kwiatkowski, R, Labit, B, Laguardia, L, Lammers, J, Laribi, E, Laszynska, E, Lazaros, A, Linder, O, Linehan, B, Lipschultz, B, Llobet, X, Loizu, J, Lunt, T, Macusova, E, Marandet, Y, Maraschek, M, Marceca, G, Marchetto, C, Marchioni, S, Marmar, E, Martin, Y, Martinelli, L, Matos, F, Maurizio, R, Mayoral, M, Mazon, D, Menkovski, V, Merle, A, Merlo, G, Meyer, H, Mikszuta-Michalik, K, Molina Cabrera, P, Morales, J, Moret, J, Moro, A, Moulton, D, Muhammed, H, Myatra, O, Mykytchuk, D, Napoli, F, Nem, R, Nielsen, A, Nocente, M, Nowak, S, Offeddu, N, Olsen, J, Orsitto, F, Pan, O, Papp, G, Pau, A, Perek, A, Pesamosca, F, Peysson, Y, Pigatto, L, Piron, C, Poradzinski, M, Porte, L, Putterich, T, Rabinski, M, Raj, H, Rasmussen, J, Ratta, G, Ravensbergen, T, Ricci, D, Ricci, P, Rispoli, N, Riva, F, Rivero-Rodriguez, J, Salewski, M, Sauter, O, Schmidt, B, Schrittweiser, R, Sharapov, S, Sheikh, U, Sieglin, B, Silva, M, Smolders, A, Snicker, A, Sozzi, C, Spolaore, M, Stagni, A, Stipani, L, Sun, G, Tala, T, Tamain, P, Tanaka, K, Tema Biwole, A, Terranova, D, Terry, J, Testa, D, Theiler, C, Thornton, A, Thrysoe, A, Torreblanca, H, Tsui, C, Vaccaro, D, Vallar, M, Van Berkel, M, Van Eester, D, Van Kampen, R, Van Mulders, S, Verhaegh, K, Verhaeghe, T, Vianello, N, Villone, F, Viezzer, E, Vincent, B, Voitsekhovitch, I, Vu, N, Walkden, N, Wauters, T, Weisen, H, Wendler, N, Wensing, M, Widmer, F, Wiesen, S, Wischmeier, M, Wijkamp, T, Wunderlich, D, Wuthrich, C, Yanovskiy, V, and Zebrowski, J

Subjects
Nuclear and High Energy Physics, Tokamak, feedback-control, Nuclear fusion, TCV, EUROfusion, ddc:620, plasmas, Condensed Matter Physics, tokamak, nuclear fusion, QC
Abstract

The tokamak à configuration variable (TCV) continues to leverage its unique shaping capabilities, flexible heating systems and modern control system to address critical issues in preparation for ITER and a fusion power plant. For the 2019–20 campaign its configurational flexibility has been enhanced with the installation of removable divertor gas baffles, its diagnostic capabilities with an extensive set of upgrades and its heating systems with new dual frequency gyrotrons. The gas baffles reduce coupling between the divertor and the main chamber and allow for detailed investigations on the role of fuelling in general and, together with upgraded boundary diagnostics, test divertor and edge models in particular. The increased heating capabilities broaden the operational regime to include T e/T i ∼ 1 and have stimulated refocussing studies from L-mode to H-mode across a range of research topics. ITER baseline parameters were reached in type-I ELMy H-modes and alternative regimes with ‘small’ (or no) ELMs explored. Most prominently, negative triangularity was investigated in detail and confirmed as an attractive scenario with H-mode level core confinement but an L-mode edge. Emphasis was also placed on control, where an increased number of observers, actuators and control solutions became available and are now integrated into a generic control framework as will be needed in future devices. The quantity and quality of results of the 2019–20 TCV campaign are a testament to its successful integration within the European research effort alongside a vibrant domestic programme and international collaborations.

Published
2022
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