/ General Physics arXiv:0804.1985


Emulsion sheet doublets as interface trackers for the OPERA experiment


Anokhina, A. (SINP, Moscow) ; Aoki, S. (Kobe U.) ; Ariga, A. (Nagoya U.) ; Arrabito, L. (Lyon, IPN) ; Autiero, D. (Lyon, IPN) ; Badertscher, A. (Zurich, ETH) ; Bay, F. (Middle East Tech. U., Ankara) ; Greggio, F.Bersani (Frascati) ; Bertolin, A. (INFN, Padua) ; Besnier, M. (Annecy, LAPP) ; Bick, D. (Hamburg U.) ; Bozza, C. (INFN, Salerno) ; Brugiere, T. (Lyon, IPN) ; Brugnera, R. (INFN, Padua) ; Brunetti, G. (INFN, Bologna) ; Buontempo, S. (INFN, Naples) ; Carrara, E. (INFN, Padua) ; Cazes, A. (Frascati) ; Chaussard, L. (Lyon, IPN) ; Chernyavsky, M. (Lebedev Inst.) ; Chiarella, V. (Frascati) ; Chon-Sen, N. (Louis Pasteur U., Strasbourg I) ; Chukanov, A. (INFN, Naples) ; Consiglio, L. (INFN, Bologna) ; Cozzi, M. (INFN, Bologna) ; Cuha, V. (Middle East Tech. U., Ankara) ; Dal Corso, F. (INFN, Padua) ; D'Amato, G. (INFN, Salerno) ; D'Ambrosio, N. (INFN, Aquila) ; De Lellis, G. (INFN, Naples) ; Declais, Y. (Lyon, IPN) ; De Serio, M. (INFN, Bari) ; Di Capua, F. (INFN, Naples) ; Di Ferdinando, D. (INFN, Bologna) ; Di Giovanni, A. (INFN, Aquila) ; Di Marco, N. (INFN, Aquila) ; Di Troia, C. (Frascati) ; Dmitrievski, S. (Dubna, JINR) ; Dominjon, A. (Lyon, IPN) ; Dracos, Marcos (Louis Pasteur U., Strasbourg I) ; Duchesneau, D. (Annecy, LAPP) ; Dusini, S. (INFN, Padua) ; Ebert, J. (Hamburg U.) ; Egorov, O. (Moscow, ITEP) ; Enikeev, R. (Moscow, INR) ; Ereditato, Antonio (Bern U.) ; Esposito, L.S. (INFN, Aquila) ; Favier, J. (Annecy, LAPP) ; Felici, G. (Frascati) ; Ferber, T. (Hamburg U.) ; Fini, R. (INFN, Bari) ; Frekers, D. (Munster U.) ; Fukuda, T. (Nagoya U.) ; Galkin, V.I. (SINP, Moscow) ; Galkin, V.A. (Obninsk, Inst. Phys. Power Eng.) ; Garfagnini, A. (INFN, Padua) ; Giacomelli, G. (INFN, Bologna) ; Giorgini, M. (INFN, Bologna) ; Goellnitz, C. (Hamburg U.) ; Goldberg, J. (Technion) ; Golubkov, D. (Moscow, ITEP) ; Gornushkin, Y. (Dubna, JINR) ; Grella, G. (INFN, Salerno) ; Grianti, F. (Frascati) ; Guler, M. (Middle East Tech. U., Ankara) ; Gusev, G. (Lebedev Inst.) ; Gustavino, C. (INFN, Aquila) ; Hagner, Caren (Hamburg U.) ; Hara, T. (Kobe U.) ; Hierholzer, M. (Hamburg U.) ; Hiramatsu, S. (Nagoya U.) ; Hoshino, Kaoru (Nagoya U.) ; Ieva, M. (INFN, Bari) ; Jakovcic, K. (Boskovic Inst., Zagreb) ; Janicsko Csathy, J. (Neuchatel U.) ; Janutta, B. (Hamburg U.) ; Jollet, C. (Louis Pasteur U., Strasbourg I) ; Juget, F. (Neuchatel U.) ; Kawai, T. (Nagoya U.) ; Kazuyama, M. (Nagoya U.) ; Kim, S.H. (Nagoya U.) ; Knuesel, J. (Bern U.) ; Kodama, K. (Aichi U.) ; Komatsu, M. (Nagoya U.) ; Kose, U. (Middle East Tech. U., Ankara) ; Kreslo, I. (Bern U.) ; Laktineh, I. (Lyon, IPN) ; Lazzaro, C. (Zurich, ETH) ; Lenkeit, J. (Hamburg U.) ; Ljubicic, A. (Boskovic Inst., Zagreb) ; Longhin, Andrea (INFN, Padua) ; Lutter, G. (Neuchatel U.) ; Manai, K. (Lyon, IPN) ; Mandrioli, G. (INFN, Bologna) ; Marotta, A. (INFN, Naples) ; Marteau, J. (Lyon, IPN) ; Matsuo, T. (Toho U.) ; Matsuoka, H. (Nagoya U.) ; Mauri, N. (INFN, Bologna) ; Meisel, F. (Neuchatel U.) ; Meregaglia, A. (Louis Pasteur U., Strasbourg I) ; Messina, M. (Bern U.) ; Migliozzi, P. (INFN, Naples) ; Mikado, S. (INFN, Naples) ; Miyamoto, S. (Nagoya U.) ; Monacelli, Piero (INFN, Aquila) ; Morishima, Kunihiro (Nagoya U.) ; Moser, U. (Bern U.) ; Muciaccia, Maria Teresa (INFN, Bari) ; Naganawa, N. (Nagoya U.) ; Naka, T. (Nagoya U.) ; Nakamura, M. (Nagoya U.) ; Nakamura, T. (Nagoya U.) ; Nakano, T. (Nagoya U.) ; Nikitina, V. (SINP, Moscow) ; Niwa, K. (Nagoya U.) ; Nonoyama, Y. (Nagoya U.) ; Ogawa, S. (Toho U.) ; Osedlo, V. (SINP, Moscow) ; Ossetski, D. (Obninsk, Inst. Phys. Power Eng.) ; Paoloni, A. (Frascati) ; Park, B.D. (Gyeongsang Natl. U.) ; Park, I.G. (Gyeongsang Natl. U.) ; Pastore, A. (INFN, Bari) ; Patrizii, L. (INFN, Bologna) ; Pennacchio, E. (Lyon, IPN) ; Pessard, H. (Annecy, LAPP) ; Pilipenko, V. (Munster U.) ; Pistillo, C. (Bern U.) ; Polukhina, N. (Lebedev Inst.) ; Pozzato, M. (INFN, Bologna) ; Pretzl, Klaus P. (Bern U.) ; Publichenko, P. (SINP, Moscow) ; Pupilli, F. (INFN, Aquila) ; Roganova, T. (SINP, Moscow) ; Rosa, G. (INFN, Rome) ; Rostovtseva, I. (Moscow, ITEP) ; Rubbia, A. (Zurich, ETH) ; Russo, A. (INFN, Naples) ; Ryazhskaya, O. (Moscow, INR) ; Ryzhikov, D. (Obninsk, Inst. Phys. Power Eng.) ; Sato, O. (Nagoya U.) ; Sato, Y. (Utsunomiya U.) ; Saveliev, V. (Obninsk, Inst. Phys. Power Eng.) ; Sazhina, G. (SINP, Moscow) ; Schembri, A. (INFN, Aquila) ; Scotto Lavina, L. (INFN, Naples) ; Shibuya, H. (Toho U.) ; Simone, S. (INFN, Bari) ; Sioli, Max (INFN, Bologna) ; Sirignano, C. (INFN, Salerno) ; Sirri, G. (INFN, Bologna) ; Song, J.S. (Gyeongsang Natl. U.) ; Spinetti, M. (Frascati) ; Stanco, L. (INFN, Padua) ; Starkov, N. (Lebedev Inst.) ; Stipcevic, M. (Boskovic Inst., Zagreb) ; Strauss, T. (Zurich, ETH) ; Strolin, Paolo Emilio (INFN, Naples) ; Sugonyaev, V. (INFN, Padua) ; Taira, Y. (Nagoya U.) ; Takahashi, S. (Nagoya U.) ; Tenti, M. (INFN, Bologna) ; Terranova, F. (Frascati) ; Tezuka, I. (Utsunomiya U.) ; Tioukov, V. (INFN, Naples) ; Tolun, P. (Middle East Tech. U., Ankara) ; Tsarev, V. (Lebedev Inst.) ; Tufanli, S. (Middle East Tech. U., Ankara) ; Ushida, N. (Aichi U.) ; Vilain, P. (Lebedev Inst.) ; Vladimirov, M. (Lebedev Inst.) ; Votano, L. (Frascati) ; Vuilleumier, J.L. (Neuchatel U.) ; Wilquet, G. (Hamburg U.) ; Wonsak, B. (Hamburg U.) ; Wurtz, J. (Louis Pasteur U., Strasbourg I) ; Yoon, C.S. (Gyeongsang Natl. U.) ; Yoshida, J. (Nagoya U.) ; Zaitsev, Y. (Moscow, ITEP) ; Zemskova, S. (Dubna, JINR) ; Zghiche, Amina (Annecy, LAPP) ; Zimmermann, R. (Hamburg U.)

Published in: JINST
Year: 2008
Vol.: 3
Page No: P07005
Pages: 20

Abstract: New methods for efficient and unambiguous interconnection between electronic counters and target units based on nuclear photographic emulsion films have been developed. The application to the OPERA experiment, that aims at detecting oscillations between mu neutrino and tau neutrino in the CNGS neutrino beam, is reported in this paper. In order to reduce background due to latent tracks collected before installation in the detector, on-site large-scale treatments of the emulsions ('refreshing') have been applied. Changeable Sheet (CSd) packages, each made of a doublet of emulsion films, have been designed, assembled and coupled to the OPERA target units ('ECC bricks'). A device has been built to print X-ray spots for accurate interconnection both within the CSd and between the CSd and the related ECC brick. Sample emulsion films have been extensively scanned with state-of-the-art automated optical microscopes. Efficient track-matching and powerful background rejection have been achieved in tests with electronically tagged penetrating muons. Further improvement of in-doublet film alignment was obtained by matching the pattern of low-energy electron tracks. The commissioning of the overall OPERA alignment procedure is in progress.

Keyword(s): nuclear emulsion ; Changeable Sheet ; doublet ; CS ; CSd ; ECC ; OPERA

Web-Page: http://inspirebeta.net/record/783290/files/CS_Efficiency_D.png; http://inspirebeta.net/record/783290/files/ECC-CS.png; http://inspirebeta.net/record/783290/files/SchemaXray.png; http://inspirebeta.net/record/783290/files/angle.png; http://inspirebeta.net/record/783290/files/cernmodule.png; http://inspirebeta.net/record/783290/files/chamber.png; http://inspirebeta.net/record/783290/files/cs_schematic.png; http://inspirebeta.net/record/783290/files/dax_csd.png; http://inspirebeta.net/record/783290/files/dax_ttcs_nofit.png; http://inspirebeta.net/record/783290/files/day_ttcs_nofit.png; http://inspirebeta.net/record/783290/files/dpx_cs.png; http://inspirebeta.net/record/783290/files/dthx_csb.png; http://inspirebeta.net/record/783290/files/dx_csb.png; http://inspirebeta.net/record/783290/files/dx_csdnuev.png; http://inspirebeta.net/record/783290/files/dx_ttcs_nofit.png; http://inspirebeta.net/record/783290/files/dy_csdnuev.png; http://inspirebeta.net/record/783290/files/dy_ttcs_nofit.png; http://inspirebeta.net/record/783290/files/ecc-cs-tt.png; http://inspirebeta.net/record/783290/files/fog.png; http://inspirebeta.net/record/783290/files/mark.png; http://inspirebeta.net/record/783290/files/package.png; http://inspirebeta.net/record/783290/files/scanback.png; http://inspirebeta.net/record/783290/files/summary.png; http://inspirebeta.net/record/783290/files/vecmap.png; http://inspirebeta.net/record/783290/files/zure3.png

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