The active muon shield in the SHiP experiment
Creators: name: SHiP Collaboration
name: Akmete, A.
name: Alexandrov, A.
name: Anokhina, A.
name: Aoki, S.
name: Atkin, E.
name: Azorskiy, N.
name: Back, J. J.
name: Bagulya, A.
name: Baranov, A.
name: Barker, G. J.
name: Bay, A.
name: Bayliss, V.
name: Bencivenni, G.
name: Berdnikov, A. Y.
name: Berdnikov, Y. A.
name: Bertani, M.
name: Betancourt, C.
name: Bezshyiko, I.
name: Bezshyyko, O.
name: Bick, D.
name: Bieschke, S.
name: Blanco, A.
name: Boehm, J.
name: Bogomilov, M.
name: Bondarenko, K.
name: Bonivento, W. M.
name: Boyarsky, A.
name: Brenner, R.
name: Breton, D.
name: Brundler, R.
name: Bruschi, M.
name: Büscher, V.
name: Buonaura, A.
name: Buontempo, S.
name: Cadeddu, S.
name: Calcaterra, A.
name: Campanelli, M.
name: Chauveau, J.
name: Chepurnov, A.
name: Chernyavsky, M.
name: Choi, K. -Y.
name: Chumakov, A.
name: Ciambrone, P.
name: Dallavalle, G. M.
name: D'Ambrosio, N.
name: D'Appollonio, G.
name: De Lellis, G.
name: De Roeck, A.
name: De Serio, M.
name: Dedenko, L.
name: Di Crescenzo, A.
name: Di Marco, N.
name: Dib, C.
name: Dijkstra, H.
name: Dmitrenko, V.
name: Domenici, D.
name: Donskov, S.
name: Dubreuil, A.
name: Ebert, J.
name: Enik, T.
name: Etenko, A.
name: Fabbri, F.
name: Fabbri, L.
name: Fedin, O.
name: Fedorova, G.
name: Felici, G.
name: Ferro-Luzzi, M.
name: Fini, R. A.
name: Fonte, P.
name: Franco, C.
name: Fukuda, T.
name: Galati, G.
name: Gavrilov, G.
name: Gerlach, S.
name: Golinka-Bezshyyko, L.
name: Golubkov, D.
name: Golutvin, A.
name: Gorbunov, D.
name: Gorbunov, S.
name: Gorkavenko, V.
name: Gornushkin, Y.
name: Gorshenkov, M.
name: Grachev, V.
name: Graverini, E.
name: Grichine, V.
name: Guler, A. M.
name: Guz, Yu.
name: Hagner, C.
name: Hakobyan, H.
name: van Herwijnen, E.
name: Hollnagel, A.
name: Hosseini, B.
name: Hushchyn, M.
name: Iaselli, G.
name: Iuliano, A.
name: Jacobsson, R.
name: Jonker, M.
name: Kadenko, I.
name: Kamiscioglu, C.
name: Kamiscioglu, M.
name: Khabibullin, M.
name: Khaustov, G.
name: Khotyantsev, A.
name: Kim, S. H.
name: Kim, V.
name: Kim, Y. G.
name: Kitagawa, N.
name: Ko, J. -W.
name: Kodama, K.
name: Kolesnikov, A.
name: Kolev, D. I.
name: Kolosov, V.
name: Komatsu, M.
name: Konovalova, N.
name: Korkmaz, M. A.
name: Korol, I.
name: Korol'ko, I.
name: Korzenev, A.
name: Kovalenko, S.
name: Krasilnikova, I.
name: Krivova, K.
name: Kudenko, Y.
name: Kurochka, V.
name: Kuznetsova, E.
name: Lacker, H. M.
name: Lai, A.
name: Lanfranchi, G.
name: Lantwin, O.
name: Lauria, A.
name: Lebbolo, H.
name: Lee, K. Y.
name: Lévy, J. -M.
name: Likacheva, V.
name: Lopes, L.
name: Lyubovitskij, V.
name: Maalmi, J.
name: Magnan, A.
name: Maleev, V.
name: Malinin, A.
name: Mefodev, A.
name: Mermod, P.
name: Mikado, S.
name: Mikhaylov, Yu.
name: Milstead, D. A.
name: Mineev, O.
name: Montanari, A.
name: Montesi, M. C.
name: Morishima, K.
name: Movchan, S.
name: Naganawa, N.
name: Nakamura, M.
name: Nakano, T.
name: Novikov, A.
name: Obinyakov, B.
name: Ogawa, S.
name: Okateva, N.
name: Owen, P. H.
name: Paoloni, A.
name: Park, B. D.
name: Paparella, L.
name: Pastore, A.
name: Patel, M.
name: Pereyma, D.
name: Petrenko, D.
name: Petridis, K.
name: Podgrudkov, D.
name: Poliakov, V.
name: Polukhina, N.
name: Prokudin, M.
name: Prota, A.
name: Rademakers, A.
name: Ratnikov, F.
name: Rawlings, T.
name: Razeti, M.
name: Redi, F.
name: Ricciardi, S.
name: Roganova, T.
name: Rogozhnikov, A.
name: Rokujo, H.
name: Rosa, G.
name: Rovelli, T.
name: Ruchayskiy, O.
name: Ruf, T.
name: Samoylenko, V.
name: Saputi, A.
name: Sato, O.
name: Savchenko, E. S.
name: Schmidt-Parzefall, W.
name: Serra, N.
name: Shakin, A.
name: Shaposhnikov, M.
name: Shatalov, P.
name: Shchedrina, T.
name: Shchutska, L.
name: Shevchenko, V.
name: Shibuya, H.
name: Shustov, A.
name: Silverstein, S. B.
name: Simone, S.
name: Skorokhvatov, M.
name: Smirnov, S.
name: Sohn, J. Y.
name: Sokolenko, A.
name: Starkov, N.
name: Storaci, B.
name: Strolin, P.
name: Takahashi, S.
name: Timiryasov, I.
name: Tioukov, V.
name: Tosi, N.
name: Treille, D.
name: Tsenov, R.
name: Ulin, S.
name: Ustyuzhanin, A.
name: Uteshev, Z.
name: Vankova-Kirilova, G.
name: Vannucci, F.
name: Venkova, P.
name: Vilchinski, S.
name: Villa, M.
name: Vlasik, K.
name: Volkov, A.
name: Voronkov, R.
name: Wanke, R.
name: Woo, J. -K.
name: Wurm, M.
name: Xella, S.
name: Yilmaz, D.
name: Yilmazer, A. U.
name: Yoon, C. S.
name: Zaytsev, Yu.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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.
description: 8 pages, 5 figures; added clarifications to the penalty function and emphasized that we care about neutrino interactions in the air