COMET Phase-I Technical Design Report
Creators: name: The COMET Collaboration
name: Abramishvili, R.
name: Adamov, G.
name: Akhmetshin, R. R.
name: Allin, A.
name: Angélique, J. C.
name: Anishchik, V.
name: Aoki, M.
name: Aznabayev, D.
name: Bagaturia, I.
name: Ban, G.
name: Ban, Y.
name: Bauer, D.
name: Baygarashev, D.
name: Bondar, A. E.
name: Cârloganu, C.
name: Carniol, B.
name: Chau, T. T.
name: Chen, J. K.
name: Chen, S. J.
name: Cheung, Y. E.
name: da Silva, W.
name: Dauncey, P. D.
name: Densham, C.
name: Devidze, G.
name: Dornan, P.
name: Drutskoy, A.
name: Duginov, V.
name: Eguchi, Y.
name: Epshteyn, L. B.
name: Evtoukhovich, P.
name: Fayer, S.
name: Fedotovich, G. V.
name: Finger, M.
name: Finger, M.
name: Fujii, Y.
name: Fukao, Y.
name: Gabriel, J. L.
name: Gay, P.
name: Gillies, E.
name: Grigoriev, D. N.
name: Gritsay, K.
name: Hai, V. H.
name: Hamada, E.
name: Hashim, I. H.
name: Hashimoto, S.
name: Hayashi, O.
name: Hayashi, T.
name: Hiasa, T.
name: Ibrahim, Z. A.
name: Igarashi, Y.
name: Ignatov, F. V.
name: Iio, M.
name: Ishibashi, K.
name: Issadykov, A.
name: Itahashi, T.
name: Jansen, A.
name: Jiang, X. S.
name: Jonsson, P.
name: Kachelhoffer, T.
name: Kalinnikov, V.
name: Kaneva, E.
name: Kapusta, F.
name: Katayama, H.
name: Kawagoe, K.
name: Kawashima, R.
name: Kazak, N.
name: Kazanin, V. F.
name: Kemularia, O.
name: Khvedelidze, A.
name: Koike, M.
name: Kormoll, T.
name: Kozlov, G. A.
name: Kozyrev, A. N.
name: Kravchenko, M.
name: Krikler, B.
name: Kumsiashvili, G.
name: Kuno, Y.
name: Kuriyama, Y.
name: Kurochkin, Y.
name: Kurup, A.
name: Lagrange, B.
name: Lai, J.
name: Lee, M. J.
name: Li, H. B.
name: Litchfield, R. P.
name: Li, W. G.
name: Loan, T.
name: Lomidze, D.
name: Lomidze, I.
name: Loveridge, P.
name: Macharashvili, G.
name: Makida, Y.
name: Mao, Y. J.
name: Markin, O.
name: Matsuda, Y.
name: Melkadze, A.
name: Melnik, A.
name: Mibe, T.
name: Mihara, S.
name: Miyamoto, N.
name: Miyazaki, Y.
name: Idris, F. Mohamad
name: Azmi, K. A. Mohamed Kamal
name: Moiseenko, A.
name: Moritsu, M.
name: Mori, Y.
name: Motoishi, T.
name: Nakai, H.
name: Nakai, Y.
name: Nakamoto, T.
name: Nakamura, Y.
name: Nakatsugawa, Y.
name: Nakazawa, Y.
name: Nash, J.
name: Natori, H.
name: Niess, V.
name: Nioradze, M.
name: Nishiguchi, H.
name: Noguchi, K.
name: Numao, T.
name: O'Dell, J.
name: Ogitsu, T.
name: Ohta, S.
name: Oishi, K.
name: Okamoto, K.
name: Okamura, T.
name: Okinaka, K.
name: Omori, C.
name: Ota, T.
name: Pasternak, J.
name: Paulau, A.
name: Picters, D.
name: Ponariadov, V.
name: Quémener, G.
name: Ruban, A. A.
name: Rusinov, V.
name: Sabirov, B.
name: Sakamoto, H.
name: Sarin, P.
name: Sasaki, K.
name: Sato, A.
name: Sato, J.
name: Semertzidis, Y. K.
name: Shigyo, N.
name: Shoukavy, Dz.
name: Slunecka, M.
name: Stöckinger, D.
name: Sugano, M.
name: Tachimoto, T.
name: Takayanagi, T.
name: Tanaka, M.
name: Tang, J.
name: Tao, C. V.
name: Teixeira, A. M.
name: Tevzadze, Y.
name: Thanh, T.
name: Tojo, J.
name: Tolmachev, S. S.
name: Tomasek, M.
name: Tomizawa, M.
name: Toriashvili, T.
name: Trang, H.
name: Trekov, I.
name: Tsamalaidze, Z.
name: Tsverava, N.
name: Uchida, T.
name: Uchida, Y.
name: Ueno, K.
name: Velicheva, E.
name: Volkov, A.
name: Vrba, V.
name: Abdullah, W. A. T. Wan
name: Warin-Charpentier, P.
name: Wong, M. L.
name: Wong, T. S.
name: Wu, C.
name: Xing, T. Y.
name: Yamaguchi, H.
name: Yamamoto, A.
name: Yamanaka, M.
name: Yamane, T.
name: Yang, Y.
name: Yano, T.
name: Yao, W. C.
name: Yeo, B.
name: Yoshida, H.
name: Yoshida, M.
name: Yoshioka, T.
name: Yuan, Y.
name: Yudin, Yu. V.
name: Zdorovets, M. V.
name: Zhang, J.
name: Zhang, Y.
name: Zuber, K.
Publisher: name: arXiv
Year: 2018
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 Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminium nucleus ($μ-e$ conversion, $μ^- N \to e^- N$); a lepton flavor violating process. The experimental sensitivity goal for this process in the Phase-I experiment is $3.1\times10^{-15}$, or 90 % upper limit of branching ratio of $7\times 10^{-15}$, which is a factor of 100 improvement over the existing limit. The expected number of background events is 0.032. To achieve the target sensitivity and background level, the 3.2 kW 8 GeV proton beam from J-PARC will be used. Two types of detectors, CyDet and StrECAL, will be used for detecting the \mue conversion events, and for measuring the beam-related background events in view of the Phase-II experiment, respectively. Results from simulation on signal and background estimations are also described.
description: A minor correction applied in Eq. 3