/ physics.ins-det arXiv:1703.03612


The active muon shield in the SHiP experiment


Akmete, A. (Middle East Tech. U., Ankara) ; Alexandrov, A. (INFN, Florence) ; Anokhina, A. (SINP, Moscow) ; Aoki, S. (Kobe U.) ; Atkin, E. (Moscow Phys. Eng. Inst.) ; Azorskiy, N. (Dubna, JINR) ; Back, J.J. (Warwick U.) ; Bagulya, A. (LPI, Moscow (main)) ; Baranov, A. (Yandex Sch. Data Anal., Moscow) ; Barker, G.J. (Warwick U.) ; Bay, A. (Ecole Polytechnique, Lausanne) ; Bayliss, V. (Rutherford) ; Bencivenni, G. (Frascati) ; Berdnikov, A.Y. (St. Petersburg Polytechnic Inst.) ; Berdnikov, Y.A. (St. Petersburg Polytechnic Inst.) ; Bertani, M. (Frascati) ; Betancourt, C. (Zurich U.) ; Bezshyiko, I. (Zurich U.) ; Bezshyyko, O. (Taras Shevchenko U.) ; Bick, D. (Hamburg U.) ; Bieschke, S. (Hamburg U.) ; Blanco, A. (LIP, Coimbra) ; Boehm, J. (Rutherford) ; Bogomilov, M. (Sofiya U.) ; Bondarenko, K. (Taras Shevchenko U.) ; Bonivento, W.M. (INFN, Cagliari) ; Boyarsky, A. (Taras Shevchenko U.) ; Brenner, R. (Uppsala U.) ; Breton, D. (Orsay, LAL) ; Brundler, R. (Zurich U.) ; Bruschi, M. (INFN, Bologna) ; Büscher, V. (Mainz U.) ; Buonaura, A. (Naples U.) ; Buontempo, S. (INFN, Florence) ; Cadeddu, S. (INFN, Cagliari) ; Calcaterra, A. (Frascati) ; Campanelli, M. (University Coll. London) ; Chauveau, J. (Paris U., VI-VII) ; Chepurnov, A. (SINP, Moscow) ; Chernyavsky, M. (LPI, Moscow (main)) ; Choi, K.-Y. (Chonnam Natl. U.) ; Chumakov, A. (Santa Maria U., Valparaiso) ; Ciambrone, P. (Frascati) ; Dallavalle, G.M. (INFN, Bologna) ; D'Ambrosio, N. (Gran Sasso) ; D'Appollonio, G. (Cagliari U.) ; De Lellis, G. (Naples U.) ; De Roeck, A. (CERN) ; De Serio, M. (Bari U.) ; Dedenko, L. (SINP, Moscow) ; Di Crescenzo, A. (Naples U.) ; Di Marco, N. (Gran Sasso) ; Dib, C. (Santa Maria U., Valparaiso) ; Dijkstra, H. (CERN) ; Dmitrenko, V. (Moscow Phys. Eng. Inst.) ; Domenici, D. (Frascati) ; Donskov, S. (Serpukhov, IHEP) ; Dubreuil, A. (Geneva U.) ; Ebert, J. (Hamburg U.) ; Enik, T. (Dubna, JINR) ; Etenko, A. (Kurchatov Inst., Moscow) ; Fabbri, F. (INFN, Bologna) ; Fabbri, L. (U. Bologna (main)) ; Fedin, O. (St. Petersburg, INP) ; Fedorova, G. (SINP, Moscow) ; Felici, G. (Frascati) ; Ferro-Luzzi, M. (CERN) ; Fini, R.A. (INFN, Bari) ; Fonte, P. (LIP, Coimbra) ; Franco, C. (LIP, Coimbra) ; Fukuda, T. (Nagoya U.) ; Galati, G. (Naples U.) ; Gavrilov, G. (Serpukhov, IHEP) ; Gerlach, S. (Humboldt U., Berlin (main)) ; Golinka-Bezshyyko, L. (Taras Shevchenko U.) ; Golubkov, D. (Moscow, ITEP) ; Golutvin, A. (Imperial Coll., London) ; Gorbunov, D. (Moscow, INR) ; Gorbunov, S. (LPI, Moscow (main)) ; Gorkavenko, V. (Taras Shevchenko U.) ; Gornushkin, Y. (Dubna, JINR) ; Gorshenkov, M. (Natl. U. Sci. Tech., Moscow) ; Grachev, V. (Moscow Phys. Eng. Inst.) ; Graverini, E. (Zurich U.) ; Grichine, V. (LPI, Moscow (main)) ; Guler, A.M. (Middle East Tech. U., Ankara) ; Guz, Yu. (Serpukhov, IHEP) ; Hagner, C. (Hamburg U.) ; Hakobyan, H. (Santa Maria U., Valparaiso) ; van Herwijnen, E. (CERN) ; Hollnagel, A. (Hamburg U.) ; Hosseini, B. (INFN, Cagliari) ; Hushchyn, M. (Yandex Sch. Data Anal., Moscow) ; Iaselli, G. (Bari U.) ; Iuliano, A. (Naples U.) ; Jacobsson, R. (CERN) ; Jonker, M. (CERN) ; Kadenko, I. (Taras Shevchenko U.) ; Kamiscioglu, C. (Ankara U.) ; Kamiscioglu, M. (Middle East Tech. U., Ankara) ; Khabibullin, M. (Moscow, INR) ; Khaustov, G. (Serpukhov, IHEP) ; Khotyantsev, A. (Moscow, INR) ; Kim, S.H. (Gyeongsang Natl. U.) ; Kim, V. (St. Petersburg Polytechnic Inst.) ; Kim, Y.G. (Natl. U. Educ., Gwangju) ; Kitagawa, N. (Nagoya U.) ; Ko, J.-W. (Cheju Natl. U.) ; Kodama, K. (Aichi U. of Education) ; Kolesnikov, A. (Dubna, JINR) ; Kolev, D.I. (Sofiya U.) ; Kolosov, V. (Serpukhov, IHEP) ; Komatsu, M. (Nagoya U.) ; Konovalova, N. (LPI, Moscow (main)) ; Korkmaz, M.A. (Middle East Tech. U., Ankara) ; Korol, I. (Humboldt U., Berlin (main)) ; Korol'ko, I. (Moscow, ITEP) ; Korzenev, A. (Geneva U.) ; Kovalenko, S. (Santa Maria U., Valparaiso) ; Krasilnikova, I. (Natl. U. Sci. Tech., Moscow) ; Krivova, K. (Moscow Phys. Eng. Inst.) ; Kudenko, Y. (Moscow Phys. Eng. Inst.) ; Kurochka, V. (Moscow, INR) ; Kuznetsova, E. (St. Petersburg, INP) ; Lacker, H.M. (Humboldt U., Berlin (main)) ; Lai, A. (INFN, Cagliari) ; Lanfranchi, G. (Frascati) ; Lantwin, O. (Imperial Coll., London) ; Lauria, A. (Naples U.) ; Lebbolo, H. (Paris U., VI-VII) ; Lee, K.Y. (Gyeongsang Natl. U.) ; Lévy, J.-M. (Paris U., VI-VII) ; Likacheva, V. (Moscow, INR) ; Lopes, L. (LIP, Coimbra) ; Lyubovitskij, V. (Santa Maria U., Valparaiso) ; Maalmi, J. (Orsay, LAL) ; Magnan, A. (Imperial Coll., London) ; Maleev, V. (St. Petersburg, INP) ; Malinin, A. (Kurchatov Inst., Moscow) ; Mefodev, A. (Moscow, INR) ; Mermod, P. (Geneva U.) ; Mikado, S. (Nihon U., Narashino) ; Mikhaylov, Yu. (Serpukhov, IHEP) ; Milstead, D.A. (Stockholm U.) ; Mineev, O. (Moscow, INR) ; Montanari, A. (INFN, Bologna) ; Montesi, M.C. (Naples U.) ; Morishima, K. (Nagoya U.) ; Movchan, S. (Dubna, JINR) ; Naganawa, N. (Nagoya U.) ; Nakamura, M. (Nagoya U.) ; Nakano, T. (Nagoya U.) ; Novikov, A. (Moscow Phys. Eng. Inst.) ; Obinyakov, B. (Kurchatov Inst., Moscow) ; Ogawa, S. (Toho U.) ; Okateva, N. (LPI, Moscow (main)) ; Owen, P.H. (Zurich U.) ; Paoloni, A. (Frascati) ; Park, B.D. (Gyeongsang Natl. U.) ; Paparella, L. (INFN, Bari) ; Pastore, A. (Bari U.) ; Patel, M. (Imperial Coll., London) ; Pereyma, D. (Moscow, ITEP) ; Petrenko, D. (Moscow Phys. Eng. Inst.) ; Petridis, K. (Bristol U.) ; Podgrudkov, D. (SINP, Moscow) ; Poliakov, V. (Serpukhov, IHEP) ; Polukhina, N. (Moscow Phys. Eng. Inst.) ; Prokudin, M. (Moscow, ITEP) ; Prota, A. (Naples U.) ; Rademakers, A. (CERN) ; Ratnikov, F. (Yandex Sch. Data Anal., Moscow) ; Rawlings, T. (Rutherford) ; Razeti, M. (INFN, Cagliari) ; Redi, F. (Imperial Coll., London) ; Ricciardi, S. (Rutherford) ; Roganova, T. (SINP, Moscow) ; Rogozhnikov, A. (Yandex Sch. Data Anal., Moscow) ; Rokujo, H. (Nagoya U.) ; Rosa, G. (INFN, Florence) ; Rovelli, T. (U. Bologna (main)) ; Ruchayskiy, O. (Bohr Inst.) ; Ruf, T. (CERN) ; Samoylenko, V. (Serpukhov, IHEP) ; Saputi, A. (Frascati) ; Sato, O. (Nagoya U.) ; Savchenko, E.S. (Natl. U. Sci. Tech., Moscow) ; Schmidt-Parzefall, W. (Hamburg U.) ; Serra, N. (Zurich U.) ; Shakin, A. (Natl. U. Sci. Tech., Moscow) ; Shaposhnikov, M. (Ecole Polytechnique, Lausanne) ; Shatalov, P. (Moscow, ITEP) ; Shchedrina, T. (LPI, Moscow (main)) ; Shchutska, L. (Taras Shevchenko U.) ; Shevchenko, V. (Kurchatov Inst., Moscow) ; Shibuya, H. (Toho U.) ; Shustov, A. (Moscow Phys. Eng. Inst.) ; Silverstein, S.B. (Stockholm U.) ; Simone, S. (Bari U.) ; Skorokhvatov, M. (Kurchatov Inst., Moscow) ; Smirnov, S. (Moscow Phys. Eng. Inst.) ; Sohn, J.Y. (Gyeongsang Natl. U.) ; Sokolenko, A. (Taras Shevchenko U.) ; Starkov, N. (LPI, Moscow (main)) ; Storaci, B. (Zurich U.) ; Strolin, P. (Naples U.) ; Takahashi, S. (Kobe U.) ; Timiryasov, I. (Ecole Polytechnique, Lausanne) ; Tioukov, V. (INFN, Florence) ; Tosi, N. (INFN, Bologna) ; Treille, D. (CERN) ; Tsenov, R. (Dubna, JINR) ; Ulin, S. (Moscow Phys. Eng. Inst.) ; Ustyuzhanin, A. (Yandex Sch. Data Anal., Moscow) ; Uteshev, Z. (Moscow Phys. Eng. Inst.) ; Vankova-Kirilova, G. (Sofiya U.) ; Vannucci, F. (Paris U., VI-VII) ; Venkova, P. (Sofiya U.) ; Vilchinski, S. (Taras Shevchenko U.) ; Villa, M. (U. Bologna (main)) ; Vlasik, K. (Moscow Phys. Eng. Inst.) ; Volkov, A. (LPI, Moscow (main)) ; Voronkov, R. (LPI, Moscow (main)) ; Wanke, R. (Mainz U.) ; Woo, J.-K. (Cheju Natl. U.) ; Wurm, M. (Mainz U.) ; Xella, S. (Bohr Inst.) ; Yilmaz, D. (Ankara U.) ; Yilmazer, A.U. (Ankara U.) ; Yoon, C.S. (Gyeongsang Natl. U.) ; Zaytsev, Yu. (Moscow, ITEP)

Pages: 7

Abstract: The SHiP experiment is designed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. An essential task for the experiment is to keep the Standard Model background level to less than 0.1 event after $2\times 10^{20}$ protons on target. In the beam dump, around $10^{11}$ muons will be produced per second. The muon rate in the spectrometer has to be reduced by at least four orders of magnitude to avoid muon-induced combinatorial background. A novel active muon shield is used to magnetically deflect the muons out of the acceptance of the spectrometer. This paper describes the basic principle of such a shield, its optimization and its performance.

Web-Page: http://inspirehep.net/record/1516916/files/xy_magnetLook.png; http://inspirehep.net/record/1516916/files/PvsPt.png; http://inspirehep.net/record/1516916/files/MuonShield_view.png; http://inspirehep.net/record/1516916/files/plot-pedagogical.png; http://inspirehep.net/record/1516916/files/arXiv:1703.03612.pdf


Note: *Temporary entry*; 7 pages, 5 figures

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