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1. THE JET PRELIMINARY TRITIUM EXPERIMENT

Author

REBUT, P, ADAMS, J, ALPER, B, ALTMANN, H, ANDERSEN, A, ANDREW, P, ALIARSHAD, S, BAILEY, W, BALET, B, BARABASCHI, P, BARANOV, Y, BARKER, P, BARNSLEY, R, BARONIAN, M, BARTLETT, D, BELL, A, BENALI, G, BERTOLI, P, BERTOLINI, E, BHATNAGAR, V, BICKLEY, A, BOND, D, BONICELLI, T, BOOTH, S, BOSIA, G, BOTMAN, M, BOUCHER, D, BOUCQUEY, P, BRANDON, M, BREGER, P, BRELEN, H, BREWERTON, W, BRINKSCHULTE, H, BROWN, T, BRUSATI, M, BUDD, T, BURES, M, BURTON, P, BUSINARO, T, BUTCHER, P, BUTTGEREIT, H, CALDWELLNICHOLS, C, CAMPBELL, D, CAMPLING, D, CARD, P, CELENTANO, G, CHALLIS, C, CHANKIN, A, CHERUBINI, A, CHIRON, D, CHRISTIANSEN, J, CHUILON, P, CLAESEN, R, CLEMENT, S, CLIPSHAM, E, COAD, J, COFFEY, I, COLTON, A, COMISKEY, M, CONROY, S, COOKE, M, COOPER, S, CORDEY, J, CORE, W, CORRIGAN, G, CORTI, S, COSTLEY, A, COTTRELL, G, COX, M, CRAWLEY, P, DACOSTA, O, DAVIES, N, DAVIES, S, DEBLANK, H, DEESCH, H, DEKOCK, L, DEKSNIS, E, DELIYANAKUS, N, DENNEHINNOV, G, DESCHAMPS, G, DICKSON, W, DIETZ, K, DINES, A, DMITRENKO, S, DMITRIEVA, M, DOBBING, J, DOLGETTA, N, DORLING, S, DOYLE, P, DUCHS, D, DUQUENOY, H, EDWARDS, A, EHRENBERG, J, EKEDAHL, A, ELEVANT, T, ERENTS, S, ERIKSSON, L, FAJEMIROKUN, H, FALTER, H, FREILING, J, FROGER, C, FROISSARD, P, FULLARD, K, GADEBERG, M, GALETSAS, A, GALBIATI, L, GAMBIER, D, GARRIBBA, M, GAZE, P, GIANNELLA, R, GIBSON, A, GILL, R, GIRARD, A, GONDHALEKAR, A, GOODALL, D, GORMEZANO, C, GOTTARDI, N, GOWERS, C, GREEN, B, HAANGE, R, HAIGH, A, HANCOCK, C, HARBOUR, P, HAWKES, N, HAYNES, P, HEMMERICH, J, HENDER, T, HOEKZEMA, J, HORTON, L, HOW, J, HOWARTH, P, HUART, M, HUGHES, T, HUGUET, M, HURD, F, IDA, K, INGRAM, B, IRVING, M, JACQUINOT, J, JAECKEL, H, JAEGER, J, JANESCHITZ, G, JANKOWICZ, Z, JARVIS, O, JENSEN, F, JONES, E, JONES, L, JONES, T, JUNGER, J, JUNIQUE, F, KAYE, A, KEEN, B, KEILHACKER, M, KERNER, W, KIDD, N, KONIG, R, KONSTANTELLOS, A, KUPSCHUS, P, LASSER, R, LAST, J, LAUNDY, B, LAUROTARONI, L, LAWSON, K, LENNHOLM, M, LINGERTAT, J, LITUNOVSKI, R, LOARTE, A, LOBEL, R, LOMAS, P, LOUGHLIN, M, LOWRY, C, MAAS, A, MACKLIN, B, MAGGI, C, MAGYAR, G, MARCHESE, V, MARCUS, F, MART, J, MARTIN, D, MARTIN, E, MARTINSOLIS, R, MASSMANN, P, MATTHEWS, G, MCBRYAN, H, MCCRACKEN, G, MERIGUET, P, MIELE, P, MILLS, S, MILLWARD, P, MINARDI, E, MOHANTI, R, MONDINO, P, MONTVAI, A, MORGAN, P, MORSI, H, MURPHY, G, NAVE, F, NEUDATCHIN, S, NEWBERT, G, NEWMAN, M, NIELSEN, P, NOLL, P, OBERT, W, OBRIEN, D, OROURKE, J, OSTROM, R, OTTAVIANI, M, PAPASTERGIOU, S, PASINI, D, PATEL, B, PEACOCK, A, PEACOCK, N, PEARCE, R, PEARSON, D, PEPEDESILVA, R, PERINIC, G, PERRY, C, PICK, M, PLANCOULAINE, J, POFFE, J, POHLCHEN, R, PORCELLI, F, PORTE, L, PRENTICE, R, PUPPIN, S, PUTVINSKII, S, RADFORD, G, RAIMONDI, T, RAMOSDEANDRADE, M, RAPISARDA, M, REICHLE, R, RICHARDS, S, RIGHI, E, RIMINI, F, ROLFE, A, ROSS, R, ROSSI, L, RUSS, R, SACK, H, SADLER, G, SAIBENE, G, SALANAVE, J, SANAZZARO, G, SANTAGIUSTINA, A, SARTORI, R, SBORCHIA, C, SCHILD, P, SCHMID, M, SCHMIDT, G, SCHROEPF, H, SCHUNKE, B, SCOTT, S, SIBLEY, A, SIMONINI, R, SIPS, A, SMEULDERS, P, SMITH, R, STAMP, M, STANGEBY, P, START, D, STEED, C, STORK, D, STOTT, P, STUBBERFIELD, P, SUMMERS, D, SUMMERS, H, SVENSSON, L, TAGLE, J, TANGA, A, TARONI, A, TERELLA, C, TESINI, A, THOMAS, P, THOMPSON, E, THOMSEN, K, TREVALION, P, TUBBING, B, TIBONE, F, VANDERBEKEN, H, VLASES, G, VONHELLERMANN, M, WADE, T, WALKER, C, WARD, D, WATKINS, M, WATSON, M, WEBER, S, WESSON, J, WIJNANDS, T, WILKS, J, WILSON, D, WINKEL, T, WOLF, R, WONG, D, WOODWARD, C, WYKES, M, YOUNG, I, ZANNELLI, L, ZOLFAGHARI, A, ZULLO, G, and ZWINGMANN, W

Subjects
inorganic chemicals, Jet (fluid), Tokamak, Materials science, Lawson criterion, Joint European Torus, Plasma, Fusion power, Condensed Matter Physics, law.invention, Nuclear physics, Nuclear Energy and Engineering, Deuterium, law, cardiovascular system, Tritium
Abstract

The first tokamak discharges with deuterium-tritium mixtures have been carried out in the Joint European Torus (JET). The main objectives were to produce more than IMW of fusion power in a controlled way, to determine tritium retention in torus systems and to establish effective means of tritium removal. The experiments were undertaken within limits imposed by restrictions on vessel activation and tritium usage. Deuterium plasmas were heated by high power deuterium neutral beams from fourteen sources and fuelled by two neural beam sources injecting tritium. In the best (D-T discharge), the tritium concentration was about 11% at peak performance, when total neutron emission rate was 6.0*1017 s-1, with 1.7 MW of fusion power. The fusion amplification factor QDT was 0.15. With optimum tritium concentration, this pulse would have produced a fusion power approximately=5 MW and nominal QDT=0.46. The same extrapolation for the best pure deuterium discharge gives about 11 MW and a nominal QDT=1.14. Techniques for introducing, tracking, monitoring and recovering tritium were highly effective.

Published
2016

2. Comparative SINGAP-MAMuG test for the ITER neutral beam injector

Author

DeEsch, H. and Svensson, L.

Abstract

ITER中性粒子入射加熱装置(NBI)用負イオン加速器には、単孔単段型(SINGAP: Single-aperture single-gap)と多孔多段型(MAMuG: Multi-aperture multi-gap)の2方式が提案されており、前者はCEAカダラッシュ研究所、後者は原子力機構において開発が進められてきた。ITER NBI建設に向け、両者の性能を比較することを目的とした試験をITERタスクとして行うこととなり、SINGAP加速器を原子力機構のMeV級イオン源試験装置に取り付けてMAMuG加速器と同じ設備,計測システムで性能評価を行った。その結果、耐電圧性能,最大負イオンビーム電流,付随電子加速の観点からMAMuGが優れることが明らかとなり、ITER機構との協議の結果、ITER NBIにはMAMuG方式が採用されることになった。, 著者所属: 日本原子力研究開発機構(JAEA)

Published
2009

3. ITER NBI用SINGAP-MAMuG加速器の性能比較試験

Author

谷口 正樹, Taniguchi, Masaki, 柏木 美恵子, Kashiwagi, Mieko, 梅田 尚孝, Umeda, Naotaka, 大楽 正幸, Dairaku, Masayuki, 渡邊 和弘, Watanabe, Kazuhiro, 井上 多加志, Inoue, Takashi, DeEsch, H., Svensson, L., 谷口 正樹, Taniguchi, Masaki, 柏木 美恵子, Kashiwagi, Mieko, 梅田 尚孝, Umeda, Naotaka, 大楽 正幸, Dairaku, Masayuki, 渡邊 和弘, Watanabe, Kazuhiro, 井上 多加志, Inoue, Takashi, DeEsch, H., and Svensson, L.

Abstract

ITER中性粒子入射加熱装置(NBI)用負イオン加速器には、単孔単段型(SINGAP: Single-aperture single-gap)と多孔多段型(MAMuG: Multi-aperture multi-gap)の2方式が提案されており、前者はCEAカダラッシュ研究所、後者は原子力機構において開発が進められてきた。ITER NBI建設に向け、両者の性能を比較することを目的とした試験をITERタスクとして行うこととなり、SINGAP加速器を原子力機構のMeV級イオン源試験装置に取り付けてMAMuG加速器と同じ設備,計測システムで性能評価を行った。その結果、耐電圧性能,最大負イオンビーム電流,付随電子加速の観点からMAMuGが優れることが明らかとなり、ITER機構との協議の結果、ITER NBIにはMAMuG方式が採用されることになった。, For the ITER NBI, two accelerator concepts have been proposed. One is the SINGAP (single gap single aperture) developed at CEA Cadarache and the other is the MAMuG (Multi aperture multi gap) developed at JAEA. In order to assess the performance of the SINGAP and the MAMuG concepts at the same test facility under the same diagnostics, a collaborative test was performed between JAEA and CEA Cadarache under an ITER task agreement. For this purpose, the SINGAP accelerator was installed at the MTF of JAEA. From the viewpoint of voltage holding, maximum beam current and electron acceleration, the MAMuG showed better performance than the SINGAP, and it has been decided to choose the MAMuG as the baseline accelerator for the ITER NBI., 著者所属: 日本原子力研究開発機構(JAEA), JAEA-Research 2008-121

Published
2009

4. Fusion Energy-Production from a Deuterium-Tritium Plasma in the Jet Tokamak

Author

Rebut, Ph, Gibson, A., Huguet, M., Adams, Jm, Alper, B., Altmann, H., Andersen, A., Andrew, P., Angelone, M., Aliarshad, S., Baigger, P., Bailey, W., Balet, B., Barabaschi, P., Barker, P., Barnsley, R., Baronian, M., Bartlett, Dv, Baylor, L., Bell, Ac, Benali, G., Bertoldi, P., Bertolini, E., Bhatnagar, V., Bickley, Aj, Binder, D., Bindslev, H., Bonicelli, T., Booth, Sj, Bosia, G., Botman, M., Boucher, D., Boucquey, P., Breger, P., Brelen, H., Brinkschulte, H., Brooks, D., Brown, A., Brown, T., Brusati, M., Bryan, S., Brzozowski, J., Buchse, R., Budd, T., Bures, M., Businaro, T., Butcher, P., Buttgereit, H., Caldwellnichols, C., Campbell, Dj, Card, P., Celentano, G., Challis, Cd, Chankin, Av, Cherubini, A., Chiron, D., Christiansen, J., Chuilon, P., Claesen, R., Clement, S., Clipsham, E., Coad, Jp, Coffey, Ih, Colton, A., Comiskey, M., Conroy, S., Cooke, M., Cooper, D., Cooper, S., Cordey, Jg, Core, W., Corrigan, G., Corti, S., Costley, Ae, Cottrell, G., Cox, M., Cripwell, P., Dacosta, O., Davies, J., Davies, N., Deblank, H., Deesch, H., Dekock, L., Deksnis, E., Delvart, F., Dennehinnov, Gb, Deschamps, G., Dickson, Wj, Dietz, Kj, Dmitrenko, Sl, Dmitrieva, M., Dobbing, J., Doglio, A., Dolgetta, N., Dorling, Se, Doyle, Pg, Duchs, Df, Duquenoy, H., Edwards, A., Ehrenberg, J., Ekedahl, A., Elevant, T., Erents, Sk, Eriksson, Lg, Fajemirokun, H., Falter, H., Freiling, J., Freville, F., Froger, C., Froissard, P., Fullard, K., Gadeberg, M., Galetsas, A., Gallagher, T., Gambier, D., Garribba, M., Gaze, P., Giannella, R., Gill, Rd, Girard, A., Gondhalekar, A., Goodall, D., Gormezano, C., Gottardi, Na, Gowers, C., Green, Bj, Grievson, B., Haange, R., Haigh, A., Hancock, Cj, Harbour, Pj, Hartrampf, T., Hawkes, Nc, Haynes, P., Hemmerich, Jl, Hender, T., Hoekzema, J., Holland, D., Hone, M., Horton, L., How, J., Huart, M., Hughes, I., Hughes, Tp, Hugon, M., Huo, Y., Ida, K., Ingram, B., Irving, M., Jacquinot, J., Jaeckel, H., Jaeger, Jf, Janeschitz, G., Jankovicz, Z., Jarvis, On, Jensen, F., Jones, Em, Jones, Hd, Jones, Lpdf, Jones, S., Jones, Ttc, Junger, Jf, Junique, F., Kaye, A., Keen, Be, Keilhacker, M., Kelly, Gj, Kerner, W., Khudoleev, A., Konig, R., Konstantellos, A., Kovanen, M., Kramer, G., Kupschus, P., Lasser, R., Last, Jr, Laundy, B., Laurotaroni, L., Laveyry, M., Lawson, K., Lennholm, M., Lingertat, J., Litunovski, Rn, Alberto Loarte, Lobel, R., Lomas, P., Loughlin, M., Lowry, C., Lupo, J., Maas, Ac, Machuzak, J., Macklin, B., Maddison, G., Maggi, Cf, Magyar, G., Mandl, W., Marchese, V., Marcon, G., Marcus, F., Mart, J., Martin, D., Martin, E., Martinsolis, R., Massmann, P., Matthews, G., Mcbryan, H., Mccracken, G., Mckivitt, J., Meriguet, P., Miele, P., Miller, A., Mills, J., Mills, Sf, Millward, P., Milverton, P., Minardi, E., Mohanti, R., Mondino, Pl, Montgomery, D., Montvai, A., Morgan, P., Morsi, H., Muir, D., Murphy, G., Myrnas, R., Nave, F., Newbert, G., Newman, M., Nielsen, P., Noll, P., Obert, W., Obrien, D., Orchard, J., Orourke, J., Ostrom, R., Ottaviani, M., Pain, M., Paoletti, F., Papastergiou, S., Parsons, W., Pasini, D., Patel, D., Peacock, A., Peacock, N., Pearce, Rjm, Pearson, D., Peng, Jf, Desilva, Rp, Perinic, G., Perry, C., Petrov, M., Pick, Ma, Plancoulaine, J., Poffe, Jp, Pohlchen, R., Porcelli, F., Porte, L., Prentice, R., Puppin, S., Putvinskii, S., Radford, G., Raimondi, T., Deandrade, Mcr, Reichle, R., Reid, J., Richards, S., Righi, E., Rimini, F., Robinson, D., Rolfe, A., Ross, Rt, Rossi, L., Russ, R., Rutter, P., Sack, Hc, Sadler, G., Saibene, G., Salanave, Jl, Sanazzaro, G., Santagiustina, A., Sartori, R., Sborchia, C., Schild, P., Schmid, M., Schmidt, G., Schunke, B., Scott, Sm, Serio, L., Sibley, A., Simonini, R., Sips, Acc, Smeulders, P., Smith, R., Stagg, R., Stamp, M., Stangeby, P., Stankiewicz, R., Start, Df, Steed, Ca, Stork, D., Stott, Pe, Stubberfield, P., Summers, D., Summers, H., Svensson, L., Tagle, Ja, Talbot, M., Tanga, A., Taroni, A., Terella, C., Terrington, A., Tesini, A., Thomas, Pr, Thompson, E., Thomsen, K., Tibone, F., Tiscornia, A., Trevalion, P., Tubbing, B., Vanbelle, P., Vanderbeken, H., Vlases, G., Vonhellermann, M., Wade, T., Walker, C., Walton, R., Ward, D., Watkins, Ml, Watkins, N., Watson, Mj, Weber, S., Wesson, J., Wijnands, Tj, Wilks, J., Wilson, D., Winkel, T., Wolf, R., Wong, D., Woodward, C., Wu, Y., Wykes, M., Young, D., Young, Id, Zannelli, L., Zolfaghari, A., and Zwingmann, W.

Abstract

The paper describes a series of experiments in the Joint European Torus (JET), culminating in the first tokamak discharges in deuterium-tritium fuelled mixtures. The experiments were undertaken within limits imposed by restrictions on vessel activation and tritium usage. The objectives were: (i) to produce more than one megawatt of fusion power in a controlled way; (ii) to validate transport codes and provide a basis for accurately predicting the performance of deuterium-tritium plasma from measurements made in deuterium plasmas; (iii) to determine tritium retention in the torus systems and to establish the effectiveness of discharge cleaning techniques for tritium removal; (iv) to demonstrate the technology related to tritium usage; and (v) to establish safe procedures for handling tritium in compliance with the regulatory requirements. A single-null X-point magnetic configuration, diverted onto the upper carbon target, with reversed toroidal magnetic field was chosen. Deuterium plasmas were heated by high power, long duration deuterium neutral beams from fourteen sources and fuelled also by up to two neutral beam sources injecting tritium. The results from three of these high performance hot ion H-mode discharges are described: a high performance pure deuterium discharge; a deuterium-tritium discharge with a 1% mixture of tritium fed to one neutral beam source; and a deuterium-tritium discharge with 100% tritium fed to two neutral beam sources. The TRANSP code was used to check the internal consistency of the measured data and to determine the origin of the measured neutron fluxes. In the best deuterium-tritium discharge, the tritium concentration was about 11% at the time of peak performance, when the total neutron emission rate was 6.0 x 10(17) neutrons/s. The integrated total neutron yield over the high power phase, which lasted about 2 s, was 7.2 x 10(17) neutrons, with an accuracy of +/- 7%. The actual fusion amplification factor, Q(DT), was about 0.15. With an optimum tritium concentration, this pulse would have produced a fusion power of almost-equal-to 5 MW and a nominal Q(DT) almost-equal-to 0.46. The same extrapolation for the pure deuterium discharge would have given almost-equal-to 11 MW and a nominal Q(DT) = 1.14, so that the total fusion power (neutrons and alpha-particles) would have exceeded the total losses in the equivalent deuterium-tritium discharge in these transient conditions. Techniques for introducing, tracking, monitoring and recovering tritium were demonstrated to be highly effective: essentially all of the tritium introduced into the neutral beam system and, so far, about two thirds of that introduced into the torus have been recovered.

Published
1992

5. First Results with the Modified Jet - the Jet Team

Author

Adams, J. M., Agarici, Y., Ageladarakis, P., Alper, B., Altmann, H., Andrew, P., Aliarshad, S., Bailey, W., Balet, B., Baranov, Y., Barker, P., Barnsley, R., Baronian, M., Bartlett, D. V., Bell, A. C., Benali, G., Bertolini, E., Bhatnagar, V., Bickley, A. J., Bindslev, H., Blackler, K., Bond, D., Bonicelli, T., Borras, K., Boucquey, P., Brandon, M., Breger, P., Brelen, H., Brewerton, W. J., Brown, T., Budd, T., Bures, M., Burton, P., Businaro, T., Buttgereit, H., Caldwellnichols, C., Campbell, D. J., Campling, D., Card, P., Cecil, F., Celentano, G., Challis, C. D., Chiron, D., Christiansen, J., Chuilon, P., Claesen, R., Clement, S., Coad, J. P., Colombi, S., Cooke, M., Cooper, S., Cordey, J. G., Cottrell, G., Cox, M., Crawley, P., Dacosta, O., Cusack, R., Dantona, G., Davies, N., Davies, S. J., Davis, J. J., Deesch, H., Deksnis, E., Deliyanakis, N., Dines, A., Dmitrenko, S. L., Dobbing, J., Dolgetta, N., Dorling, S. E., Doyle, P. G., Duquenoy, H., Edwards, A., Ehrenberg, J., Ekedahl, A., Elevant, T., Erents, S. K., Eriksson, L. G., Falter, H., Fasoli, A., Fechner, B., Fischer, B., Fishpool, G., Freiling, J., Froger, C., Froissard, P., Fullard, K., Gadeberg, M., Galbiati, L., Garribba, M., Gerstel, U., Giannella, R., Gibson, A., Gill, R. D., Goulding, R., Gondhalekar, A., Goodall, D., Gormezano, C., Gottardi, N. A., Gowers, C., Grisolia, C., Guo, H., Haigh, A., Hancock, C. J., Harbour, P. J., Hawkes, N. C., Hawkes, N. P., Hemmerich, J. L., Hender, T., Hoekzema, J., Horton, L., How, J., Howarth, P. J., Howman, A., Huart, M., Hutchinson, I., Hughes, T. P., Hurd, F., Ingram, B., Irving, M., Ishida, S., Jacquinot, J., Jaeckel, H., Jaeger, J. F., Jarvis, O. N., Jensen, F., Johnson, M., Jones, E. M., Jones, Lpdf, Jones, T. T. C., Junger, J. F., Junique, F., Kaye, A., Keen, B. E., Keilhacker, M., Kerner, W., Kidd, N. G., Konig, R., Kupschus, P., Lamalle, P., Lasser, R., Last, J. R., Laurotaroni, L., Laviron, C., Lawson, K., Lazzaro, E., Lennholm, M., Lingertat, J., Lomas, P., Loughlin, M., Lowry, C., Lyadina, E., Maas, A. C., Macklin, B., Maggi, C. F., Marchese, V., Marcus, F., Mart, J., Martin, D., Martin, T., Matthews, G., McBryan, H., McCormick, G., Meigs, A., Milani, S., Monk, R., Morgan, P., Murphy, G., Nave, F., Newbert, G., Nguyen, F., Nielsen, P., Noll, P., Obert, W., Obrien, D., Oord, E., Ostrom, R., Ottaviani, M., Papastergiou, S., Parail, V. V., Patel, B., Peacock, A., Peacock, N., Pearce, R. J. M., Perry, C., Pick, M. A., Plancoulaine, J., Pogutse, O., Poffe, J. P., Porcelli, F., Porte, L., Prentice, R., Puppin, S., Radford, G., Raimondi, T., Reichle, R., Richards, S., Righi, E., Rimini, F., Rolfe, A., Rookes, A., Ross, R. T., Rossi, A., Rossi, L., Russ, R., Sadler, G., Saibene, G., Salisbury, M., Sanazzaro, G., Santagiustina, A., Sartori, F., Sartori, R., Savrukhin, P., Schaffer, M., Schild, P., Schmid, M., Schunke, B., Scott, S. M., Sharapov, S., Shaw, R. L., Sibley, A., Simonini, R., Sips, A. C. C., Smeulders, P., Smith, R., Soldner, F., Stamp, M., Stangeby, P., Start, D. F., Steed, C. A., Stork, D., Stott, P. E., Stubberfield, P., Summers, D., Summers, H., Suverkropp, W., Svensson, L., Szabo, T., Tabellini, M., Tanga, A., Taroni, A., Terella, C., Tesini, A., Thomas, P. R., Thompson, E., Thomsen, K., Tubbing, B., Vanderbeken, H., Vandergoot, E., Vayakis, G., Vlases, G., Vonhellermann, M., Wade, T., Walker, C., Ward, D., Watkins, M. L., Watkins, N., Watson, M. J., Weber, S., Wesson, J., Wilson, D., Winkel, T., Wolf, R., Woodward, C., Young, I. D., Zannelli, L., Zornig, N., and Zwingmann, W.

Subjects
JET
Abstract

JET was extensively modified in the 1992/93 shutdown. The new pumped divertor and many new systems were brought into operation early in 1994. Operations have progressed to 4MA plasma current and, with substantial additional heating, H-mode confinement results confirm the expected scaling. The high power handling capability of the pumped divertor with sweeping is estimated at 20MW for 20s. H-mode plasmas have large Type I ELMs. With lower hybrid heating alone, 2MA full current drive has been achieved with good efficiency, with ICRF power, effective heating and direct electron heating have been demonstrated.

6. High performance Joint European Torus (JET) plasmas for deuterium-tritium operation with the MkII divertor

Author

Jones, T. T. C., Adams, J. M., Ageladarakis, P., AliArshad, S., Alper, B., Altmann, H., Andrew, P., Bainbridge, N., Bak, P., Balet, B., Baranov, Y., Barker, P., Barnsley, R., Baronian, M., Barth, K., Bartlett, D. V., Bell, A. C., Bertolini, E., Bhatnagar, V., Bickley, A. J., Bindslev, H., Blackler, K., Bond, D., Bonicelli, T., Borba, D., Brandon, M., Breger, P., Brelen, H., Brennan, P., Brewerton, W. J., Browne, M. L., Budd, T., Burt, A., Burton, P., Businaro, T., Buzio, M., CaldwellNichols, C., Campbell, D. J., Campling, D., Card, P., Celentano, G., Challis, C. D., Chankin, A. V., Cherubini, A., Chiron, D., Christiansen, J., Chuilon, P., Ciric, D., Claesen, R., Clarke, H. E., Clement, S., Coad, J. P., Cocilovo, U., Coffey, I., Conway, G., Cooper, S., Cordey, J. G., Corrigan, G., Cottrell, G., Cox, M., Crawley, P., Cusack, R., Davies, N., Davies, S. J., Davis, J. J., deBenedetti, M., deEsch, H., deHaas, J., Deksnis, E., Deliyanakis, N., diMarchi, E., Dines, A., Dmitrenko, S. L., Dobbing, J., Dolgetta, N., Dorling, S. E., Doyle, P. G., Duquenoy, H., Edwards, A. M., Edwards, A. W., Egedal, J., Ehrenberg, J., Ekedahl, A., Elevant, T., Ellis, J., Endler, M., Erents, S. K., Eriksson, L. G., Falter, H., Farthing, J. W., Fasoli, A., Fechner, B., Fichmuller, M., Fischer, B., Fishpool, G., Froger, C., Fullard, K., Gadeberg, M., Galbiati, L., Gauthier, E., Giannella, R., Gibson, A., Gill, R. D., Godden, D., Gondhalekar, A., Goniche, M., Goodall, D., Gormezano, C., Gowers, C., Graham, J., Guenther, K., Guirlet, R., Guo, H., Haigh, A., Haist, B., Hancock, C. J., Harbour, P. J., Hawkes, N. C., Hawkes, N. P., Hemmerich, J. L., Hender, T., Hoekzema, J., Horton, L., How, J., Howman, A., Huart, M., Hughes, T. P., Hurd, F., Huysmans, G., Hwang, A., Ibbott, C., Ingesson, C., Ingram, B., Irving, M., Jacquinot, J., Jaeckel, H., Jaeckel, P., Jaeger, J. F., Jarvis, I. N., Jensen, F., Johnson, M., Jones, E. M., Jones, Lpdf, Junger, J. F., Junique, F., Kaye, A., Keen, B. E., Keilhacker, M., Kerner, W., Kidd, N. G., King, Q. A., Knipe, S., Koenig, R., Krom, J. G., Kubo, H., Kupschus, P., Lamalle, P., Lasser, R., Last, J. R., LauroTaroni, L., Lawson, K., Lennholm, M., Lingertat, J., Loarte, A., Lomas, P. J., Loughlin, M., Lovegrove, T., Lowry, C., Maas, A. C., Macklin, B., Maggi, C. F., Mantsinen, M., Marchese, V., Marcus, F., Mart, J., Martin, D., Martin, T., Mathews, G., McBryan, H., McCormick, G., McCracken, G., McCullen, P. A., Meigs, A., Miele, P., Milani, F., Mills, J., Mohanti, R., Monk, R., Morgan, P., Muir, D., Murphy, G., Nave, F., Newbert, G., Nielsen, P., Noll, P., Obert, W., Obrien, D., Oord, E., Ostrom, R., Ottaviani, M., Papastergiou, S., Parail, V. V., Parkinson, R., Parsons, W., Patel, B., Paynter, A., Peacock, A., Peacock, N., Pearce, R. J. H., Perry, C., Pick, M. A., Plancoulaine, J., Pogutse, O., Porte, L., Prentice, R., Puppin, S., Radford, G., Raimondi, T., Reichle, R., Riccardo, V., Righi, E., Rimini, F., Rolfe, A., Rookes, A., Ross, R. T., Rossi, A., Rossi, L., Sadler, G., Saibene, G., Salisbury, M., Santagiustina, A., Sartori, F., Sartori, R., Saunders, R., Schild, P., Schmid, M., Schmidt, V., Schokker, B., Schunke, B., Scibile, M., Scott, S. M., Sharapov, S., Sibley, A., Simonini, R., Sips, A. C. C., Smeulders, P., Smith, O., Smith, P., Smith, R., Soldner, F., Spence, J., Springmann, E., Stamp, M., Stangeby, P., Start, D. F., Stork, D., Stott, P. E., Stubberfield, P., Summers, D., Svensson, L., Svensson, P., Tabasso, A., Tabellini, M., Tait, J., Tanga, A., Taroni, A., Terella, C., Thomas, P. R., Thomsen, K., Tubbing, B., UlHaq, Y., Vadgama, A., vanBelle, P., vanderLinden, R., Vlases, G., vonHellermann, M., Wade, T., Walton, R., Ward, D., Watkins, M. L., Watkins, N., Watson, M. J., Wesson, J., Wheatley, M., Wilson, D., Winkel, T., Woodward, C., Young, D., Young, I. D., Yu, Q., Zannelli, F., Zastrow, K. D., Zhang, W., Zornig, N., and Zwingmann, W.

Subjects
Nuclear physics, Physics, Thermonuclear fusion, Deuterium, Neutron emission, Physics::Plasma Physics, JET, Divertor, Joint European Torus, Neutron, Plasma, Magnetohydrodynamics, Condensed Matter Physics
Abstract

Planned experiments in the Joint European Torus [Plasma Physics and Controlled Fusion Research, Proceedings, 13th International Conference, Washington, D.C., 1990 (International Atomic Energy Agency, Vienna, 1991), Vol. 1, p. 27] (JET) with deuterium-tritium (D-T) plasmas require high fusion performance for alpha-particle heating studies and for investigation of isotope dependence in conditions relevant to the International Thermonuclear Experimental Reactor [Plasma Phys. Controlled Fusion 37, A19 (1995)]. In deuterium plasmas, the highest neutron rates have been obtained in the hot-ion high-confinement mode (H mode) which is ultimately limited by magnetohydrodynamic (MHD) phenomena when the pressure gradient approaches ideal ballooning and kink stability limits in the vicinity of the edge transport barrier. Results are reported confirming the MkII divertor's increased closure and pumping in this regime, progress in understanding the MHD-related termination is discussed, and the use of ion cyclotron resonance heating (ICRH) in combination with high-power neutral beams to increase the neutron yield is described. In separate experiments internal transport barriers have been established through careful programming of the current ramp and heating waveforms, and neutron emission comparable with the best hot-ion II-modes achieved. Steady-state II-mode discharges exhibiting edge localized modes (ELMs) in reactor-like configurations and conditions have been demonstrated, including cases in which relevant dimensionless parameter values are preserved, ready also for testing in D-T. (C) 1997 American institute of Physics.

7. JET - PROGRESS IN PERFORMANCE AND UNDERSTANDING

Author

Keilhacker, M., Adams, Jm, Altmann, H., Andersen, A., Andrew, P., Angelone, M., Arshad, Sa, Bailey, W., Ballantyne, P., Balet, B., Barabaschi, P., Barnsley, R., Baronian, M., Bartlett, Dv, Bell, Ac, Benfatto, I., Benali, G., Bergsaker, H., Bertoldi, P., Bertolini, E., Bhatnagar, V., Bickley, Aj, Bindslev, H., Bonicelli, T., Booth, Sj, Bosia, G., Botman, M., Boucher, D., Boucquey, P., Breger, P., Brelen, H., Brinkschulte, H., Brown, T., Brusati, M., Budd, T., Bures, M., Businaro, T., Butcher, P., Buttgereit, H., Caldwellnichols, C., Campbell, Dj, Card, P., Celentano, G., Challis, Cd, Chankin, Av, Chiron, D., Christiansen, J., Christodoulopoulos, C., Chuilon, P., Claesen, R., Clement, S., Clipsham, E., Coad, Jp, Comiskey, M., Conroy, S., Cooke, M., Cooper, S., Cordey, Jg, Core, W., Corrigan, G., Corti, S., Costley, Ae, Cottrell, G., Cox, M., Cripwell, P., Deblank, H., Deesch, H., Dekock, L., Deksnis, E., Dennehinnov, Gb, Deschamps, G., Dietz, Kj, Dmitrenko, Sl, Dobbing, J., Dolgetta, N., Dorling, Se, Doyle, Pg, Duchs, Df, Duquenoy, H., Edwards, A., Ehrenberg, J., Ekedahl, A., Elevant, T., Erents, Sk, Eriksson, Lg, Fajemirokun, H., Falter, H., Flory, D., Freiling, J., Froger, C., Froissard, P., Fullard, K., Gadeberg, M., Galetsas, A., Gambier, D., Garribba, M., Gaze, P., Giannella, R., Gibson, A., Gill, Rd, Girard, A., Gondhalekar, A., Gormezano, C., Gottardi, Na, Gowers, C., Green, Bj, Haange, R., Haas, G., Haigh, A., Gregory Hammett, Hancock, Cj, Harbour, Pj, Hawkes, Nc, Haynes, P., Hemmerich, Jl, Hender, T., Herzog, Fb, Herzog, Rf, Hoekzema, J., How, J., Huart, M., Hughes, I., Hughes, Tp, Hugon, M., Huguet, M., Hwang, A., Ingram, B., Irving, M., Jacquinot, J., Jaeckel, H., Jaeger, Jf, Janeschitz, G., Jankowicz, S., Jarvis, On, Jensen, F., Jones, Em, Jones, Lpdf, Jones, Ttc, Junger, Jf, Junique, E., Kaye, A., Keen, Be, Kelly, Gj, Kerner, W., Konig, R., Konstantellos, A., Kovanen, M., Kramer, G., Kupschus, P., Lasser, R., Last, Jr, Laundy, B., Laurotaroni, L., Lawson, K., Lennholm, M., Loarte, A., Lobel, R., Lomas, P., Loughlin, M., Lowry, C., Macklin, B., Maddison, G., Magyar, G., Mandl, W., Marchese, V., Marcus, F., Mart, J., Martin, E., Martinsolis, R., Massmann, P., Mccracken, G., Meriguet, P., Miele, P., Mills, Sf, Millward, P., Mohanti, R., Mondino, Pl, Montvai, A., Moriyama, S., Morgan, P., Morsi, H., Murphy, G., Mynarends, M., Myrnas, R., Nardone, C., Nave, F., Newbert, G., Newman, M., Nielsen, P., Noll, P., Obert, W., Obrien, D., Orourke, J., Ostrom, R., Ottaviani, M., Pain, M., Paoletti, F., Papastergiou, S., Pasini, D., Peacock, A., Peacock, N., Pearson, D., Desilva, Rp, Perinic, G., Perry, C., Pick, M., Pitts, R., Plancoulaine, J., Poffe, Jp, Porcelli, F., Porte, L., Prentice, R., Puppin, S., Putvinsko, S., Radford, G., Raimondi, T., Deandrade, Mcr, Rebut, Ph, Reichle, R., Righi, E., Rimini, F., Robinson, D., Rolfe, A., Ross, Rt, Rossi, L., Russ, R., Rutter, P., Sack, Hc, Sadler, G., Saibene, G., Salanave, Jl, Sanazzaro, G., Santagiustina, A., Sartori, R., Sborchia, C., Schild, P., Schmid, M., Schmidt, G., Schunke, B., Scott, Sm, Sibley, A., Simonini, R., Sips, Acc, Smeulders, P., Stankiewicz, R., Stamp, M., Stangeby, P., Start, Df, Steed, Ca, Stork, D., Stott, Pe, Stringer, Te, Stubberfield, P., Summers, D., Summers, H., Svensson, L., Tagle, Ja, Tanga, A., Taroni, A., Tesini, A., Thomas, Pr, Thompson, E., Thomsen, K., Todd, Jm, Trevalion, P., Tubbing, B., Tibone, F., Usselmann, E., Vanderbeken, H., Vlases, G., Vonhellermann, M., Wade, T., Walker, C., Walton, R., Ward, D., Watkins, Ml, Watson, Mj, Weber, S., Wesson, J., Wijnands, Tj, Wilks, J., Wilson, D., Winkel, T., Wolf, R., Wolle, B., Wong, D., Woodward, C., Wu, Y., Wykes, M., Young, Id, Zannelli, L., Zhu, Y., and Zwingmann, W.

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