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Your search keyword '"Ropert, J. A."' showing total 4 results
Start Over Author "Ropert, J. A." Publisher uppsala universitet, karnfysik
4 results on '"Ropert, J. A."'

1. Reinterpretation of excited states in Po-212 : Shell-model multiplets rather than alpha-cluster states

Author

Fernandez, A., Jungclaus, A., Golubev, P., Rudolph, D., Sarmiento, L. G., Gargano, A., Naidja, H., Astier, A., Dupont, E., Gadea, A., Nacher, E., Perea, A., Wimmer, K., Clement, E., Fremont, G., Goupil, J., Houarner, C., Jacquot, B., Korichi, A., Lemasson, A., Li, H. J., Ljungvall, J., Menager, L., Perez-Vidal, R. M., Petrache, C. M., Ralet, D., Ropert, J. A., Saillant, F., Samark-Roth, A., Simpson, G. S., Spitaels, C., Zielinska, M., Ansari, S., Dudouet, J., Illana, A., Jurado, M., Kocheva, D., Lorenz, Ch, Quintana, B., Rainovski, G., Redon, N., Tocabens, G., Barrientos, D., Benzoni, G., Birkenbach, B., Boston, A. J., Boston, H. C., Bracco, A., Ciemala, M., Collado, J., Cullen, D. M., Domingo-Pardo, C., Eberth, J., Gonzalez, V, Harkness-Brennan, L. J., Hess, H., Judson, D. S., Korten, W., Leoni, S., Maj, A., Menegazzo, R., Mengoni, D., Michelagnoli, C., Million, B., Napoli, D. R., Nyberg, Johan, Podolyak, Zs, Pullia, A., Reiter, P., Sanchis, E., Stezowski, O., Theisen, Ch, and Valiente-Dobon, J. J.

Subjects
Subatomär fysik, Astrophysics::High Energy Astrophysical Phenomena, Subatomic Physics
Abstract

A gamma-ray spectroscopic study of Po-212 was performed at the Grand Accelerateur National d'Ions Lourds, using the inverse kinematics alpha-transfer reaction C-12(Pb-208, Po-212) Be-8 and the AGATA spectrometer. A careful analysis based on gamma gamma coincidence relations allowed us to establish 14 new excited states in the energy range between 1.9 and 3.3 MeV. None of these states, however, can be considered as candidates for the levels with spins and parities of 1(-) and 2(-) and excitation energies below 2.1 MeV, which have been predicted by recent alpha-cluster model calculations. A systematic comparison of the experimentally established excitation scheme of Po-212 with shell-model calculations was performed. This comparison suggests that the six states with excitation energies (spins and parities) of 1744 (4(-)), 1751 (8(-)), 1787 (6(-)), 1946 (4(-)), 1986 (8(-)), and 2016 (6(-)) keV, which previously were interpreted as alpha-cluster states, may in fact be of positive parity and belong to low-lying shell-model multiplets. This reinterpretation of the structure of Po-212 is supported by experimental information with respect to the linear polarization of gamma rays, which suggests a magnetic character of the 432-keV gamma ray decaying from the state at an excitation energy of 1787 keV to the 6(1)(+) yrast state, and exclusive reaction cross sections.

Published
2021

2. Lifetime measurements in Ti-52,Ti-54 to study shell evolution toward N=32

Author

Goldkuhle, A., Fransen, C., Blazhev, A., Beckers, M., Birkenbach, B., Braunroth, T., Clement, E., Dewald, A., Dudouet, J., Eberth, J., Hess, H., Jacquot, B., Jolie, J., Kim, Y-H, Lemasson, A., Lenzi, S. M., Li, H. J., Litzinger, J., Michelagnoli, C., Mueller-Gatermann, C., Singh, B. S. Nara, Perez-Vidal, R. M., Ralet, D., Reiter, P., Vogt, A., Warr, N., Zell, K. O., Atac, A., Barrientos, D., Barthe-Dejean, C., Benzoni, G., Boston, A. J., Boston, H. C., Bourgault, P., Burrows, I, Cacitti, J., Cederwall, B., Ciemala, M., Cullen, D. M., De France, G., Domingo-Pardo, C., Foucher, J-L, Fremont, G., Gadea, A., Gangnant, P., Gonzalez, V, Goupil, J., Henrich, C., Houarner, C., Jean, M., Judson, D. S., Korichi, A., Korten, W., Labiche, M., Lefevre, A., Legeard, L., Legruel, F., Leoni, S., Ljungvall, J., Maj, A., Maugeais, C., Menager, L., Menard, N., Menegazzo, R., Mengoni, D., Million, B., Munoz, H., Napoli, D. R., Navin, A., Nyberg, Johan, Ozille, M., Podolyak, Zs, Pullia, A., Raine, B., Recchia, F., Ropert, J., Saillant, F., Salsac, M. D., Sanchis, E., Schmitt, C., Simpson, J., Spitaels, C., Stezowski, O., Theisen, Ch, Toulemonde, M., Tripon, M., Dobon, J-J Valiente, Voltolini, G., and Zielinska, M.

Subjects
Subatomär fysik, Subatomic Physics, Nuclear Experiment
Abstract

Lifetimes of the excited states in the neutron-rich Ti-52,Ti-54 nuclei, produced in a multinucleon-transfer reaction, were measured by employing the Cologne plunger device and the recoil-distance Doppler-shift method. The experiment was performed at the Grand Accelerateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the gamma-ray detection, coupled to the large-acceptance variable mode spectrometer for an event-by-event particle identification. A comparison between the transition probabilities obtained from the measured lifetimes of the 2(1)(+) to 8(1)(+) yrast states in Ti-52,Ti-54 and that from the shell-model calculations based on the well-established GXPF1A, GXPF1B, and KB3G fp shell interactions support the N = 32 subshell closure. The B(E2) values for Ti-52 determined in this work are in disagreement with the known data, but are consistent with the predictions of the shell-model calculations and reduce the previously observed pronounced staggering across the even-even titanium isotopes.

Published
2019

3. Conceptual design of the AGATA 1 π array at GANIL

Author

Clement, E., Michelagnoli, C., de France, G., Li, H. J., Lemasson, A., Dejeon, C. Barthe, Beuzard, M., Bougault, P., Cacitti, J., Foucher, J. -L, Fremont, G., Gangnant, P., Goupil, J., Houarner, C., Jean, M., Lefevre, A., Legeard, L., Legruel, F., Maugeais, C., Menager, L., Menard, N., Munoz, H., Ozille, M., Raine, B., Ropert, J. A., Saillant, F., Spitaels, C., Tripon, M., Vallerand, Ph., Voltolini, G., Korten, W., Salsac, M. -D, Theisen, Ch., Zielinska, M., Joannem, T., Karolak, M., Kebbiri, M., Lotode, A., Touzery, R., Walter, Ch., Korichi, A., Ljungvall, J., Lopez-Martens, A., Ralet, D., Dosme, N., Grave, X., Karkour, N., Lafay, X., Legay, E., Kojouharov, I., Domingo-Pardo, C., Gadea, A., Perez-Vidal, R. M., Civera, J. V., Birkenbach, B., Eberth, J., Hess, H., Lewandowski, L., Reiter, P., Nannini, A., De Angelis, G., Jaworski, G., John, P., Napoli, D. R., Valiente-Dobon, J. J., Barrientos, D., Bortolato, D., Benzoni, G., Bracco, A., Brambilla, S., Camera, F., Crespi, F. C. L., Leoni, S., Million, B., Pullia, A., Wieland, O., Bazzacco, D., Lenzi, S. M., Lunardi, S., Menegazzo, R., Mengoni, D., Recchia, F., Bellato, M., Isocrate, R., Canet, F. J. Egea, Didierjean, F., Duchene, G., Baumann, R., Brucker, M., Dangelser, E., Filliger, M., Friedmann, H., Gaudiot, G., Grapton, J. -N, Kocher, H., Mathieu, C., Sigward, M. -H, Thomas, D., Veeramootoo, S., Dudouet, J., Stezowski, O., Aufranc, C., Aubert, Y., Labiche, M., Simpson, J., Burrows, I., Coleman-Smith, P. J., Grant, A., Lazarus, I. H., Morrall, P. S., Pucknell, V. F. E., Boston, A., Judson, D. S., Lalovic, N., Nyberg, Johan, Collado, J., Gonzalez, V., Kuti, I., Nyako, B. M., Maj, A., Rudigier, M., Clement, E., Michelagnoli, C., de France, G., Li, H. J., Lemasson, A., Dejeon, C. Barthe, Beuzard, M., Bougault, P., Cacitti, J., Foucher, J. -L, Fremont, G., Gangnant, P., Goupil, J., Houarner, C., Jean, M., Lefevre, A., Legeard, L., Legruel, F., Maugeais, C., Menager, L., Menard, N., Munoz, H., Ozille, M., Raine, B., Ropert, J. A., Saillant, F., Spitaels, C., Tripon, M., Vallerand, Ph., Voltolini, G., Korten, W., Salsac, M. -D, Theisen, Ch., Zielinska, M., Joannem, T., Karolak, M., Kebbiri, M., Lotode, A., Touzery, R., Walter, Ch., Korichi, A., Ljungvall, J., Lopez-Martens, A., Ralet, D., Dosme, N., Grave, X., Karkour, N., Lafay, X., Legay, E., Kojouharov, I., Domingo-Pardo, C., Gadea, A., Perez-Vidal, R. M., Civera, J. V., Birkenbach, B., Eberth, J., Hess, H., Lewandowski, L., Reiter, P., Nannini, A., De Angelis, G., Jaworski, G., John, P., Napoli, D. R., Valiente-Dobon, J. J., Barrientos, D., Bortolato, D., Benzoni, G., Bracco, A., Brambilla, S., Camera, F., Crespi, F. C. L., Leoni, S., Million, B., Pullia, A., Wieland, O., Bazzacco, D., Lenzi, S. M., Lunardi, S., Menegazzo, R., Mengoni, D., Recchia, F., Bellato, M., Isocrate, R., Canet, F. J. Egea, Didierjean, F., Duchene, G., Baumann, R., Brucker, M., Dangelser, E., Filliger, M., Friedmann, H., Gaudiot, G., Grapton, J. -N, Kocher, H., Mathieu, C., Sigward, M. -H, Thomas, D., Veeramootoo, S., Dudouet, J., Stezowski, O., Aufranc, C., Aubert, Y., Labiche, M., Simpson, J., Burrows, I., Coleman-Smith, P. J., Grant, A., Lazarus, I. H., Morrall, P. S., Pucknell, V. F. E., Boston, A., Judson, D. S., Lalovic, N., Nyberg, Johan, Collado, J., Gonzalez, V., Kuti, I., Nyako, B. M., Maj, A., and Rudigier, M.

Abstract

The Advanced GAmma Tracking Array (AGATA) has been installed at the GANIL facility, Caen-France. This setup exploits the stable and radioactive heavy-ions beams delivered by the cyclotron accelerator complex of GANIL. Additionally, it benefits from a large palette of ancillary detectors and spectrometers to address in-beam γ-ray spectroscopy of exotic nuclei. The set-up has been designed to couple AGATA with a magnetic spectrometer, charged-particle and neutron detectors, scintillators for the detection of high-energy γ rays and other devices such as a plunger to measure nuclear lifetimes. In this paper, the design and the mechanical characteristics of the set-up are described. Based on simulations, expected performances of the AGATA l π array are presented., Title in WoS: Conceptual design of the AGATA 1 pi array at GANIL

Published
2017
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4. AGATA -Advanced GAmma Tracking Array

Author

Akkoyun, S., Algora, A., Alikhani, B., Ameil, F., Angelis, G. de, Arnold, L., Astier, A., Atac, Ayse, Aubert, Y., Aufranc, C., Austin, A., Aydin, S., Azaiez, F., Badoer, S., Balabanski, D. L., Barrientos, D., Baulieu, G., Baumann, R., Bazzacco, D., Beck, F. A., Beck, T., Bednarczyk, P., Bellato, M., Bentley, M. A., Benzoni, G., Berthier, R., Berti, L., Beunard, R., Bianco, G. Lo, Birkenbach, B., Bizzeti, P. G., Bizzeti-Sona, A. M., Blanc, F. Le, Blasco, J. M., Blasi, N., Bloor, D., Boiano, C., Borsato, M., Bortolato, D., Boston, A. J., Boston, H. C., Bourgault, P., Boutachkov, P., Bouty, A., Bracco, A., Brambilla, S., Brawn, I. P., Brondi, A., Broussard, S., Bruyneel, B., Bucurescu, D., Burrows, I., Burger, A., Cabaret, S., Cahan, B., Calore, E., Camera, F., Capsoni, A., Carrio, F., Casati, G., Castoldi, M., Cederwall, B., Cercus, J. -L, Chambert, V., Chambit, M. El, Chapman, R., Charles, L., Chavas, J., Clement, E., Cocconi, P., Coelli, S., Coleman-Smith, P. J., Colombo, A., Colosimo, S., Commeaux, C., Conventi, D., Cooper, R. J., Corsi, A., Cortesi, A., Costa, L., Crespi, F. C. L., Cresswell, J. R., Cullen, D. M., Curien, D., Czermak, A., Delbourg, D., Depalo, R., Descombes, T., Desesquelles, P., Detistov, P., Diarra, C., Didierjean, F., Dimmock, M. R., Doan, Q. T., Domingo-Pardo, C., Doncel, M., Dorangeville, F., Dosme, N., Drouen, Y., Duchêne, G., Dulny, B., Eberth, J., Edelbruck, P., Egea, J., Engert, T., Erduran, M. N., Erturk, S., Fanin, C., Fantinel, S., Farnea, E., Faul, T., Filliger, M., Filmer, F., Finck, Ch., France, G. de, Gadea, A., Gast, W., Geraci, A., Gerl, J., Gernhauser, R., Giannatiempo, A., Giaz, A., Gibelin, L., Givechev, A., Goel, N., Gonzalez, V., Gottardo, A., Grave, X., Grebosz, J., Griffiths, R., Grint, A. N., Gros, P., Guevara, L., Gulmini, M., Gorgen, A., Ha, H. T. M., Habermann, T., Harkness, L. J., Harroch, H., Hauschild, K., He, C., Hernandez-Prieto, A., Hervieu, B., Hess, H., Huyuk, T., Ince, E., Isocrate, R., Jaworski, G., Johnson, A., Jolie, J., Jones, P., Jonson, B., Joshi, P., Judson, D. S., Jungclaus, A., Kaci, M., Karkour, N., Karolak, M., Karkour, A., Kebbiri, M., Kempley, R. S., Khaplanov, A., Klupp, S., Kogimtzis, M., Kojouharov, I., Korichi, A., Korten, W., Kroll, Th., Krucken, R., Kurz, N., Ky, B. Y., Labiche, M., Lafay, X., Lavergne, L., Lazarus, I. H., Leboutelier, S., Lefebvre, F., Legay, E., Legeard, L., Lelli, F., Lenzi, S. M., Leoni, S., Lermitage, A., Lersch, D., Leske, J., Letts, S. C., Lhenoret, S., Lieder, R. M., Linget, D., Ljungvall, J., Lopez-Martens, A., Lotode, A., Lunardi, S., Maj, A., Marel, J. van der, Mariette, Y., Marginean, N., Marginean, R., Maron, G., Mather, A. R., Meczynski, W., Mendez, V., Medina, P., Melon, B., Menegazzo, R., Mengoni, D., Merchan, E., Mihailescu, L., Michelagnoli, C., Mierzejewski, J., Milechina, L., Million, B., Mitev, K., Molini, P., Montanari, D., Moon, S., Morbiducci, F., Moro, R., Morrall, P. S., Möller, O., Nannini, A., Napoli, D. R., Nelson, L., Nespolo, M., Ngo, V. L., Nicoletto, M., Nicolini, R., Noa, Y. Le, Nolan, P. J., Norman, M., Nyberg, Johan, Obertelli, A., Olariu, A., Orlandi, R., Oxley, D. C., Ozben, C., Ozille, M., Oziol, C., Pachoud, E., Palacz, M., Palin, J., Pancin, J., Parisel, C., Pariset, P., Pascovici, G., Peghin, R., Pellegri, L., Perego, A., Perrier, S., Petcu, M., Petkov, P., Petrache, C., Pierre, E., Pietralla, N., Pietri, S., Pignanelli, M., Piqueras, I., Podolyak, Z., Pouhalec, P. Le, Pouthas, J., Pugnere, D., Pucknell, V. F. E., Pullia, A., Quintana, B., Raine, R., Rainovski, G., Ramina, L., Rampazzo, G., Rana, G. La, Rebeschini, M., Recchia, F., Redon, N., Reese, M., Reiter, P., Regan, P. H., Riboldi, S., Richer, M., Rigato, M., Rigby, S., Ripamonti, G., Robinson, A. P., Robin, J., Roccaz, J., Ropert, J. -A, Rosse, B., Rossi Alvarez, C., Rosso, D., Rubio, B., Rudolph, D., Saillant, F., Sahin, E., Salomon, F., Salsac, M. -D, Salt, J., Salvato, G., Sampson, J., Sanchis, E., Santos, C., Schaffner, H., Schlarb, M., Scraggs, D. P., Seddon, D., Senyigit, M., Sigward, M. -H, Simpson, G., Simpson, J., Slee, M., Smith, J. F., Sona, P., Sowicki, B., Spolaore, P., Stahl, C., Stanios, T., Stefanova, E., Stezowski, O., Strachan, J., Suliman, G., Söderström, Pär-Anders, Tain, J. L., Tanguy, S., Tashenov, S., Theisen, Ch., Thornhill, J., Tomasi, F., Toniolo, N., Touzery, R., Travers, B., Triossi, A., Tripon, M., Tun-Lanoe, K. M. M., Turcato, M., Unsworth, C., Ur, C. A., Valiente-Dobon, J. J., Vandone, V., Vardaci, E., Venturelli, R., Veronese, F., Veyssiere, Ch., Viscione, E., Wadsworth, R., Walker, P. M., Warr, N., Weber, C., Weisshaar, D., Wells, D., Wieland, O., Wiens, A., Wittwer, G., Wollersheim, H. J., Zocca, F., Zamfir, N. V., Zieblinski, M., Zucchiatti, A., Akkoyun, S., Algora, A., Alikhani, B., Ameil, F., Angelis, G. de, Arnold, L., Astier, A., Atac, Ayse, Aubert, Y., Aufranc, C., Austin, A., Aydin, S., Azaiez, F., Badoer, S., Balabanski, D. L., Barrientos, D., Baulieu, G., Baumann, R., Bazzacco, D., Beck, F. A., Beck, T., Bednarczyk, P., Bellato, M., Bentley, M. A., Benzoni, G., Berthier, R., Berti, L., Beunard, R., Bianco, G. Lo, Birkenbach, B., Bizzeti, P. G., Bizzeti-Sona, A. M., Blanc, F. Le, Blasco, J. M., Blasi, N., Bloor, D., Boiano, C., Borsato, M., Bortolato, D., Boston, A. J., Boston, H. C., Bourgault, P., Boutachkov, P., Bouty, A., Bracco, A., Brambilla, S., Brawn, I. P., Brondi, A., Broussard, S., Bruyneel, B., Bucurescu, D., Burrows, I., Burger, A., Cabaret, S., Cahan, B., Calore, E., Camera, F., Capsoni, A., Carrio, F., Casati, G., Castoldi, M., Cederwall, B., Cercus, J. -L, Chambert, V., Chambit, M. El, Chapman, R., Charles, L., Chavas, J., Clement, E., Cocconi, P., Coelli, S., Coleman-Smith, P. J., Colombo, A., Colosimo, S., Commeaux, C., Conventi, D., Cooper, R. J., Corsi, A., Cortesi, A., Costa, L., Crespi, F. C. L., Cresswell, J. R., Cullen, D. M., Curien, D., Czermak, A., Delbourg, D., Depalo, R., Descombes, T., Desesquelles, P., Detistov, P., Diarra, C., Didierjean, F., Dimmock, M. R., Doan, Q. T., Domingo-Pardo, C., Doncel, M., Dorangeville, F., Dosme, N., Drouen, Y., Duchêne, G., Dulny, B., Eberth, J., Edelbruck, P., Egea, J., Engert, T., Erduran, M. N., Erturk, S., Fanin, C., Fantinel, S., Farnea, E., Faul, T., Filliger, M., Filmer, F., Finck, Ch., France, G. de, Gadea, A., Gast, W., Geraci, A., Gerl, J., Gernhauser, R., Giannatiempo, A., Giaz, A., Gibelin, L., Givechev, A., Goel, N., Gonzalez, V., Gottardo, A., Grave, X., Grebosz, J., Griffiths, R., Grint, A. N., Gros, P., Guevara, L., Gulmini, M., Gorgen, A., Ha, H. T. M., Habermann, T., Harkness, L. J., Harroch, H., Hauschild, K., He, C., Hernandez-Prieto, A., Hervieu, B., Hess, H., Huyuk, T., Ince, E., Isocrate, R., Jaworski, G., Johnson, A., Jolie, J., Jones, P., Jonson, B., Joshi, P., Judson, D. S., Jungclaus, A., Kaci, M., Karkour, N., Karolak, M., Karkour, A., Kebbiri, M., Kempley, R. S., Khaplanov, A., Klupp, S., Kogimtzis, M., Kojouharov, I., Korichi, A., Korten, W., Kroll, Th., Krucken, R., Kurz, N., Ky, B. Y., Labiche, M., Lafay, X., Lavergne, L., Lazarus, I. H., Leboutelier, S., Lefebvre, F., Legay, E., Legeard, L., Lelli, F., Lenzi, S. M., Leoni, S., Lermitage, A., Lersch, D., Leske, J., Letts, S. C., Lhenoret, S., Lieder, R. M., Linget, D., Ljungvall, J., Lopez-Martens, A., Lotode, A., Lunardi, S., Maj, A., Marel, J. van der, Mariette, Y., Marginean, N., Marginean, R., Maron, G., Mather, A. R., Meczynski, W., Mendez, V., Medina, P., Melon, B., Menegazzo, R., Mengoni, D., Merchan, E., Mihailescu, L., Michelagnoli, C., Mierzejewski, J., Milechina, L., Million, B., Mitev, K., Molini, P., Montanari, D., Moon, S., Morbiducci, F., Moro, R., Morrall, P. S., Möller, O., Nannini, A., Napoli, D. R., Nelson, L., Nespolo, M., Ngo, V. L., Nicoletto, M., Nicolini, R., Noa, Y. Le, Nolan, P. J., Norman, M., Nyberg, Johan, Obertelli, A., Olariu, A., Orlandi, R., Oxley, D. C., Ozben, C., Ozille, M., Oziol, C., Pachoud, E., Palacz, M., Palin, J., Pancin, J., Parisel, C., Pariset, P., Pascovici, G., Peghin, R., Pellegri, L., Perego, A., Perrier, S., Petcu, M., Petkov, P., Petrache, C., Pierre, E., Pietralla, N., Pietri, S., Pignanelli, M., Piqueras, I., Podolyak, Z., Pouhalec, P. Le, Pouthas, J., Pugnere, D., Pucknell, V. F. E., Pullia, A., Quintana, B., Raine, R., Rainovski, G., Ramina, L., Rampazzo, G., Rana, G. La, Rebeschini, M., Recchia, F., Redon, N., Reese, M., Reiter, P., Regan, P. H., Riboldi, S., Richer, M., Rigato, M., Rigby, S., Ripamonti, G., Robinson, A. P., Robin, J., Roccaz, J., Ropert, J. -A, Rosse, B., Rossi Alvarez, C., Rosso, D., Rubio, B., Rudolph, D., Saillant, F., Sahin, E., Salomon, F., Salsac, M. -D, Salt, J., Salvato, G., Sampson, J., Sanchis, E., Santos, C., Schaffner, H., Schlarb, M., Scraggs, D. P., Seddon, D., Senyigit, M., Sigward, M. -H, Simpson, G., Simpson, J., Slee, M., Smith, J. F., Sona, P., Sowicki, B., Spolaore, P., Stahl, C., Stanios, T., Stefanova, E., Stezowski, O., Strachan, J., Suliman, G., Söderström, Pär-Anders, Tain, J. L., Tanguy, S., Tashenov, S., Theisen, Ch., Thornhill, J., Tomasi, F., Toniolo, N., Touzery, R., Travers, B., Triossi, A., Tripon, M., Tun-Lanoe, K. M. M., Turcato, M., Unsworth, C., Ur, C. A., Valiente-Dobon, J. J., Vandone, V., Vardaci, E., Venturelli, R., Veronese, F., Veyssiere, Ch., Viscione, E., Wadsworth, R., Walker, P. M., Warr, N., Weber, C., Weisshaar, D., Wells, D., Wieland, O., Wiens, A., Wittwer, G., Wollersheim, H. J., Zocca, F., Zamfir, N. V., Zieblinski, M., and Zucchiatti, A.

Abstract

The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realisation of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterisation of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximise its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer.

Published
2012
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