Study of the effects induced by lead on the emulsion films of the OPERA experiment

Anokhina, A.; Aoki, S.; Ariga, A.; Arrabito, L.; Autiero, D.; Badertscher, A.; Bay, F.; Bergnoli, A.; Greggio, F.; Besnier, M.; Bick, D.; Bozza, C.; Brugiere, T.; Brugnera, R.; Brunetti, G.; Buontempo, S.; Carrara, E.; Cazes, A.; Chaussard, L.; Chernyavsky, M.; Chiarella, V.; Chon-Sen, N.; Chukanov, A.; Consiglio, L.; Cozzi, M.; Dal Corso, F.; D'Amato, G.; D'Ambrosio, N.; De Lellis, G.; Declais, Y.; De Serio, M.; Di Capua, F.; Di Ferdinando, D.; Di Giovanni, A.; Di Marco, N.; Di Troia, C.; Dmitrievski, S.; Dominjon, A.; Dracos, M.; Duchesneau, D.; Dulach, B.; Dusini, S.; Ebert, J.; Egorov, O.; Enikeev, R.; Ereditato, A.; Esposito, S.; Favier, J.; Felici, G.; Ferber, T.; Fini, R.; Franceschi, A.; Fukuda, T.; Fukushima, C.; Galkin, V.; Galkin, V.; Garfagnini, A.; Giacomelli, G.; Giorgini, M.; Goellnitz, C.; Golubkov, D.; Gornoushkin, Y.; Grella, G.; Grianti, F.; Guler, ALİ; Gusev, G.; Gustavino, C.; Hagner, C.; Hara, T.; Hierholzer, M.; Hiramatsu, S.; Hoshino, K.; Ieva, M.; Jakovcic, K.; Csathy, J.; Janutta, B.; Jollet, C.; Juget, F.; Kawai, T.; Kazuyama, M.; Kim, S.; Kimura, M.; Knuesel, J.; Kodama, K.; Komatsu, M.; Kose, U.; Kreslo, I.; Laktineh, I.; Lazzaro, C.; Lenkeit, J.; Ljubicic, A.; Longhin, A.; Lutter, G.; Manai, K.; Mandrioli, G.; Manzoor, S.; Marotta, A.; Marteau, J.; Matsuoka, H.; Mauri, N.; Meisel, F.; Meregaglia, A.; Messina, M.; Migliozzi, P.; Miyamoto, S.; Monacelli, P.; Morishima, K.; Moser, U.; Muciaccia, M.; Naganawa, N.; Naka, T.; Nakamura, M.; Nakamura, T.; Nakano, T.; Nikitina, V.; Niwa, K.; Nonoyama, Y.; Ogawa, S.; Osedlo, V.; Ossetski, D.; Paoloni, A.; Park, B.; Park, I.; Pastore, A.; Patrizii, L.; Pennacchio, E.; Pessard, H.; Pistillo, C.; Polukhina, N.; Pozzato, M.; Pretzl, K.; Publichenko, P.; Pupilli, F.; Roganova, T.; Rosa, G.; Rostovtseva, I.; Rubbia, A.; Russo, A.; Ryazhskaya, O.; Ryzhikov, D.; Sato, Y.; Sato, O.; Saveliev, V.; Sazhina, G.; Schembri, A.; Lavina, L.; Shibuya, H.; Simone, S.; Sioli, M.; Sirignano, C.; Sirri, G.; Song, J.; Spinetti, M.; Stanco, L.; Starkov, N.; Stipcevic, M.; Strauss, T.; Strolin, P.; Sugonyaev, V.; Taira, Y.; Takahashi, S.; Tenti, M.; Terranova, F.; Tioukov, V.; Togo, V.; Tolun, P.; Tsarev, V.; Tufanli, S.; Ushida, N.; Valieri, C.; Vilain, P.; Vladimirov, M.; Votano, L.; Vuilleumier, L.; Wilquet, G.; Wonsak, B.; Wurtz, J.; Yoon, C.; Yoshida, J.; Zaitsev, Y.; Zemskova, S.; Zghicheb, A.; Zimmermannm, R.

doi:10.1088/1748-0221/3/07/p07002

Study of the effects induced by lead on the emulsion films of the OPERA experiment

Atıf İçin Kopyala

Anokhina A., Aoki S., Ariga A., Arrabito L., Autiero D., Badertscher A., ...Daha Fazla

JOURNAL OF INSTRUMENTATION, cilt.3, 2008 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 3
Basım Tarihi: 2008
Doi Numarası: 10.1088/1748-0221/3/07/p07002
Dergi Adı: JOURNAL OF INSTRUMENTATION
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The OPERA neutrino oscillation experiment is based on the use of the Emulsion Cloud Chamber (ECC). In the OPERA ECC, nuclear emulsion films acting as very high precision tracking detectors are interleaved with lead plates providing a massive target for neutrino interactions. We report on studies related to the effects occurring from the contact between emulsion and lead. A low radioactivity lead is required in order to minimize the number of background tracks in emulsions and to achieve the required performance in the reconstruction of neutrino events. It was observed that adding other chemical elements to the lead, in order to improve the mechanical properties, may significantly increase the level of radioactivity on the emulsions. A detailed study was made in order to choose a lead alloy with good mechanical properties and an appropriate packing technique so as to have a low enough effective radioactivity.