COMET Phase-I technical design report

R. Abramishvili; G. Adamov; R. R. Akhmetshin; A. Allin; J. C. Angélique; V. Anishchik; M. Aoki; D. Aznabayev; I. Bagaturia; G. Ban; Y. Ban; D. Bauer; D. Baygarashev; A. E. Bondar; C. Cârloganu; B. Carniol; T. T. Chau; J. K. Chen; S. J. Chen; Y. E. Cheung; W. Da Silva; P. D. Dauncey; C. Densham; G. Devidze; P. Dornan; A. Drutskoy; V. Duginov; Y. Eguchi; L. B. Epshteyn; P. Evtoukhovitch; S. Fayer; G. V. Fedotovich; M. Finger; M. Finger; Y. Fujii; Y. Fukao; J. L. Gabriel; P. Gay; E. Gillies; D. N. Grigoriev; K. Gritsay; V. H. Hai; E. Hamada; I. H. Hashim; S. Hashimoto; O. Hayashi; T. Hayashi; T. Hiasa; Z. A. Ibrahim; Y. Igarashi; F. V. Ignatov; M. Iio; K. Ishibashi; A. Issadykov; T. Itahashi; A. Jansen; X. S. Jiang; P. Jonsson; T. Kachelhoffer; V. Kalinnikov; E. Kaneva; F. Kapusta; H. Katayama; K. Kawagoe; R. Kawashima; N. Kazak; V. F. Kazanin; O. Kemularia; A. Khvedelidze; M. Koike; T. Kormoll; G. A. Kozlov; A. N. Kozyrev; M. Kravchenko; B. Krikler; G. Kumsiashvili; Y. Kuno; Y. Kuriyama; Y. Kurochkin; A. Kurup; B. Lagrange; J. Lai; M. J. Lee; H. B. Li; R. P. Litchfield; W. G. Li; T. Loan; D. Lomidze; I. Lomidze; P. Loveridge; G. Macharashvili; Y. Makida; Y. J. Mao; O. Markin; Y. Matsuda; A. Melkadze; A. Melnik; T. Mibe; S. Mihara; N. Miyamoto; Y. Miyazaki; F. Mohamad Idris; K. A.Mohamed Kamal Azmi; A. Moiseenko; M. Moritsu; Y. Mori; T. Motoishi; H. Nakai; Y. Nakai; T. Nakamoto; Y. Nakamura; Y. Nakatsugawa; Y. Nakazawa; J. Nash; H. Natori; V. Niess; M. Nioradze; H. Nishiguchi; K. Noguchi; T. Numao; J. O'dell; T. Ogitsu; S. Ohta; K. Oishi; K. Okamoto; T. Okamura; K. Okinaka; C. Omori; T. Ota; J. Pasternak; A. Paulau; D. Picters; V. Ponariadov; G. Quémener; A. A. Ruban; V. Rusinov; B. Sabirov; H. Sakamoto; P. Sarin; K. Sasaki; A. Sato; J. Sato; Y. K. Semertzidis; N. Shigyo; Dz Shoukavy; M. Slunecka; D. Stöckinger; M. Sugano; T. Tachimoto; T. Takayanagi; M. Tanaka; J. Tang; C. V. Tao; A. M. Teixeira; Y. Tevzadze; T. Thanh; J. Tojo; S. S. Tolmachev; M. Tomasek; M. Tomizawa; T. Toriashvili; H. Trang; I. Trekov; Z. Tsamalaidze; N. Tsverava; T. Uchida; Y. Uchida; K. Ueno; E. Velicheva; A. Volkov; V. Vrba; W. A.T.Wan Abdullah; P. Warin-Charpentier; M. L. Wong; T. S. Wong; C. Wu; T. Y. Xing; H. Yamaguchi; A. Yamamoto; M. Yamanaka; T. Yamane; Y. Yang; T. Yano; W. C. Yao; B. Yeo; H. Yoshida; M. Yoshida; T. Yoshioka; Y. Yuan; Yu V. Yudin; M. V. Zdorovets; J. Zhang; Y. Zhang; K. Zuber

doi:10.1093/ptep/ptz125

COMET Phase-I technical design report

R. Abramishvili, G. Adamov, R. R. Akhmetshin, A. Allin, J. C. Angélique, V. Anishchik, M. Aoki, D. Aznabayev, I. Bagaturia, G. Ban, Y. Ban, D. Bauer, D. Baygarashev, A. E. Bondar, C. Cârloganu, B. Carniol, T. T. Chau, J. K. Chen, S. J. Chen, Y. E. CheungW. Da Silva, P. D. Dauncey, C. Densham, G. Devidze, P. Dornan, A. Drutskoy, V. Duginov, Y. Eguchi, L. B. Epshteyn, P. Evtoukhovitch, S. Fayer, G. V. Fedotovich, M. Finger, M. Finger, Y. Fujii, Y. Fukao, J. L. Gabriel, P. Gay, E. Gillies, D. N. Grigoriev, K. Gritsay, V. H. Hai, E. Hamada, I. H. Hashim, S. Hashimoto, O. Hayashi, T. Hayashi, T. Hiasa, Z. A. Ibrahim, Y. Igarashi, F. V. Ignatov, M. Iio, K. Ishibashi, A. Issadykov, T. Itahashi, A. Jansen, X. S. Jiang, P. Jonsson, T. Kachelhoffer, V. Kalinnikov, E. Kaneva, F. Kapusta, H. Katayama, K. Kawagoe, R. Kawashima, N. Kazak, V. F. Kazanin, O. Kemularia, A. Khvedelidze, M. Koike, T. Kormoll, G. A. Kozlov, A. N. Kozyrev, M. Kravchenko, B. Krikler, G. Kumsiashvili, Y. Kuno, Y. Kuriyama, Y. Kurochkin, A. Kurup, B. Lagrange, J. Lai, M. J. Lee, H. B. Li, R. P. Litchfield, W. G. Li, T. Loan, D. Lomidze, I. Lomidze, P. Loveridge, G. Macharashvili, Y. Makida, Y. J. Mao, O. Markin, Y. Matsuda, A. Melkadze, A. Melnik, T. Mibe, S. Mihara, N. Miyamoto, Y. Miyazaki, F. Mohamad Idris, K. A.Mohamed Kamal Azmi, A. Moiseenko, M. Moritsu, Y. Mori, T. Motoishi, H. Nakai, Y. Nakai, T. Nakamoto, Y. Nakamura, Y. Nakatsugawa, Y. Nakazawa, J. Nash, H. Natori, V. Niess, M. Nioradze, H. Nishiguchi, K. Noguchi, T. Numao, J. O'dell, T. Ogitsu, S. Ohta, K. Oishi, K. Okamoto, T. Okamura, K. Okinaka, C. Omori, T. Ota, J. Pasternak, A. Paulau, D. Picters, V. Ponariadov, G. Quémener, A. A. Ruban, V. Rusinov, B. Sabirov, H. Sakamoto, P. Sarin, K. Sasaki, A. Sato, J. Sato, Y. K. Semertzidis, N. Shigyo, Dz Shoukavy, M. Slunecka, D. Stöckinger, M. Sugano, T. Tachimoto, T. Takayanagi, M. Tanaka, J. Tang, C. V. Tao, A. M. Teixeira, Y. Tevzadze, T. Thanh, J. Tojo, S. S. Tolmachev, M. Tomasek, M. Tomizawa, T. Toriashvili, H. Trang, I. Trekov, Z. Tsamalaidze, N. Tsverava, T. Uchida, Y. Uchida, K. Ueno, E. Velicheva, A. Volkov, V. Vrba, W. A.T.Wan Abdullah, P. Warin-Charpentier, M. L. Wong, T. S. Wong, C. Wu, T. Y. Xing, H. Yamaguchi, A. Yamamoto, M. Yamanaka, T. Yamane, Y. Yang, T. Yano, W. C. Yao, B. Yeo, H. Yoshida, M. Yoshida, T. Yoshioka, Y. Yuan, Yu V. Yudin, M. V. Zdorovets, J. Zhang, Y. Zhang, K. Zuber

Research output: Contribution to journal › Article › peer-review

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Abstract

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 aluminum nucleus (μ-e conversion, μ^-N → e^-N); a lepton flavor-violating process. The experimental sensitivity goal for this process in the Phase-I experiment is 3.1 × 10^-15, or 90% upper limit of a branching ratio of 7 × 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 μ-e 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.

Original language	English
Article number	033C01
Journal	Progress of Theoretical and Experimental Physics
Volume	2020
Issue number	3
DOIs	https://doi.org/10.1093/ptep/ptz125
Publication status	Published - Mar 13 2020

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1093/ptep/ptz125

Cite this

Abramishvili, R., Adamov, G., Akhmetshin, R. R., Allin, A., Angélique, J. C., Anishchik, V., Aoki, M., Aznabayev, D., Bagaturia, I., Ban, G., Ban, Y., Bauer, D., Baygarashev, D., Bondar, A. E., Cârloganu, C., Carniol, B., Chau, T. T., Chen, J. K., Chen, S. J., ... Zuber, K. (2020). COMET Phase-I technical design report. Progress of Theoretical and Experimental Physics, 2020(3), Article 033C01. https://doi.org/10.1093/ptep/ptz125

Abramishvili, R, Adamov, G, Akhmetshin, RR, Allin, A, Angélique, JC, Anishchik, V, Aoki, M, Aznabayev, D, Bagaturia, I, Ban, G, Ban, Y, Bauer, D, Baygarashev, D, Bondar, AE, Cârloganu, C, Carniol, B, Chau, TT, Chen, JK, Chen, SJ, Cheung, YE, Da Silva, W, Dauncey, PD, Densham, C, Devidze, G, Dornan, P, Drutskoy, A, Duginov, V, Eguchi, Y, Epshteyn, LB, Evtoukhovitch, P, Fayer, S, Fedotovich, GV, Finger, M, Finger, M, Fujii, Y, Fukao, Y, Gabriel, JL, Gay, P, Gillies, E, Grigoriev, DN, Gritsay, K, Hai, VH, Hamada, E, Hashim, IH, Hashimoto, S, Hayashi, O, Hayashi, T, Hiasa, T, Ibrahim, ZA, Igarashi, Y, Ignatov, FV, Iio, M, Ishibashi, K, Issadykov, A, Itahashi, T, Jansen, A, Jiang, XS, Jonsson, P, Kachelhoffer, T, Kalinnikov, V, Kaneva, E, Kapusta, F, Katayama, H, Kawagoe, K, Kawashima, R, Kazak, N, Kazanin, VF, Kemularia, O, Khvedelidze, A, Koike, M, Kormoll, T, Kozlov, GA, Kozyrev, AN, Kravchenko, M, Krikler, B, Kumsiashvili, G, Kuno, Y, Kuriyama, Y, Kurochkin, Y, Kurup, A, Lagrange, B, Lai, J, Lee, MJ, Li, HB, Litchfield, RP, Li, WG, Loan, T, Lomidze, D, Lomidze, I, Loveridge, P, Macharashvili, G, Makida, Y, Mao, YJ, Markin, O, Matsuda, Y, Melkadze, A, Melnik, A, Mibe, T, Mihara, S, Miyamoto, N, Miyazaki, Y, Mohamad Idris, F, Azmi, KAMK, Moiseenko, A, Moritsu, M, Mori, Y, Motoishi, T, Nakai, H, Nakai, Y, Nakamoto, T, Nakamura, Y, Nakatsugawa, Y, Nakazawa, Y, Nash, J, Natori, H, Niess, V, Nioradze, M, Nishiguchi, H, Noguchi, K, Numao, T, O'dell, J, Ogitsu, T, Ohta, S, Oishi, K, Okamoto, K, Okamura, T, Okinaka, K, Omori, C, Ota, T, Pasternak, J, Paulau, A, Picters, D, Ponariadov, V, Quémener, G, Ruban, AA, Rusinov, V, Sabirov, B, Sakamoto, H, Sarin, P, Sasaki, K, Sato, A, Sato, J, Semertzidis, YK, Shigyo, N, Shoukavy, D, Slunecka, M, Stöckinger, D, Sugano, M, Tachimoto, T, Takayanagi, T, Tanaka, M, Tang, J, Tao, CV, Teixeira, AM, Tevzadze, Y, Thanh, T, Tojo, J, Tolmachev, SS, Tomasek, M, Tomizawa, M, Toriashvili, T, Trang, H, Trekov, I, Tsamalaidze, Z, Tsverava, N, Uchida, T, Uchida, Y, Ueno, K, Velicheva, E, Volkov, A, Vrba, V, Abdullah, WATW, Warin-Charpentier, P, Wong, ML, Wong, TS, Wu, C, Xing, TY, Yamaguchi, H, Yamamoto, A, Yamanaka, M, Yamane, T, Yang, Y, Yano, T, Yao, WC, Yeo, B, Yoshida, H, Yoshida, M, Yoshioka, T, Yuan, Y, Yudin, YV, Zdorovets, MV, Zhang, J, Zhang, Y & Zuber, K 2020, 'COMET Phase-I technical design report', Progress of Theoretical and Experimental Physics, vol. 2020, no. 3, 033C01. https://doi.org/10.1093/ptep/ptz125

@article{469eefb8d31f445c88025f8a464c1e95,

title = "COMET Phase-I technical design report",

abstract = "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 aluminum nucleus (μ-e conversion, μ-N → e-N); a lepton flavor-violating process. The experimental sensitivity goal for this process in the Phase-I experiment is 3.1 × 10-15, or 90% upper limit of a branching ratio of 7 × 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 μ-e 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.",

author = "R. Abramishvili and G. Adamov and Akhmetshin, {R. R.} and A. Allin and Ang{\'e}lique, {J. C.} and V. Anishchik and M. Aoki and D. Aznabayev and I. Bagaturia and G. Ban and Y. Ban and D. Bauer and D. Baygarashev and Bondar, {A. E.} and C. C{\^a}rloganu and B. Carniol and Chau, {T. T.} and Chen, {J. K.} and Chen, {S. J.} and Cheung, {Y. E.} and {Da Silva}, W. and Dauncey, {P. D.} and C. Densham and G. Devidze and P. Dornan and A. Drutskoy and V. Duginov and Y. Eguchi and Epshteyn, {L. B.} and P. Evtoukhovitch and S. Fayer and Fedotovich, {G. V.} and M. Finger and M. Finger and Y. Fujii and Y. Fukao and Gabriel, {J. L.} and P. Gay and E. Gillies and Grigoriev, {D. N.} and K. Gritsay and Hai, {V. H.} and E. Hamada and Hashim, {I. H.} and S. Hashimoto and O. Hayashi and T. Hayashi and T. Hiasa and Ibrahim, {Z. A.} and Y. Igarashi and Ignatov, {F. V.} and M. Iio and K. Ishibashi and A. Issadykov and T. Itahashi and A. Jansen and Jiang, {X. S.} and P. Jonsson and T. Kachelhoffer and V. Kalinnikov and E. Kaneva and F. Kapusta and H. Katayama and K. Kawagoe and R. Kawashima and N. Kazak and Kazanin, {V. F.} and O. Kemularia and A. Khvedelidze and M. Koike and T. Kormoll and Kozlov, {G. A.} and Kozyrev, {A. N.} and M. Kravchenko and B. Krikler and G. Kumsiashvili and Y. Kuno and Y. Kuriyama and Y. Kurochkin and A. Kurup and B. Lagrange and J. Lai and Lee, {M. J.} and Li, {H. B.} and Litchfield, {R. P.} and Li, {W. G.} and T. Loan and D. Lomidze and I. Lomidze and P. Loveridge and G. Macharashvili and Y. Makida and Mao, {Y. J.} and O. Markin and Y. Matsuda and A. Melkadze and A. Melnik and T. Mibe and S. Mihara and N. Miyamoto and Y. Miyazaki and {Mohamad Idris}, F. and Azmi, {K. A.Mohamed Kamal} and A. Moiseenko and M. Moritsu and Y. Mori and T. Motoishi and H. Nakai and Y. Nakai and T. Nakamoto and Y. Nakamura and Y. Nakatsugawa and Y. Nakazawa and J. Nash and H. Natori and V. Niess and M. Nioradze and H. Nishiguchi and K. Noguchi and T. Numao and J. O'dell and T. Ogitsu and S. Ohta and K. Oishi and K. Okamoto and T. Okamura and K. Okinaka and C. Omori and T. Ota and J. Pasternak and A. Paulau and D. Picters and V. Ponariadov and G. Qu{\'e}mener and Ruban, {A. A.} and V. Rusinov and B. Sabirov and H. Sakamoto and P. Sarin and K. Sasaki and A. Sato and J. Sato and Semertzidis, {Y. K.} and N. Shigyo and Dz Shoukavy and M. Slunecka and D. St{\"o}ckinger and M. Sugano and T. Tachimoto and T. Takayanagi and M. Tanaka and J. Tang and Tao, {C. V.} and Teixeira, {A. M.} and Y. Tevzadze and T. Thanh and J. Tojo and Tolmachev, {S. S.} and M. Tomasek and M. Tomizawa and T. Toriashvili and H. Trang and I. Trekov and Z. Tsamalaidze and N. Tsverava and T. Uchida and Y. Uchida and K. Ueno and E. Velicheva and A. Volkov and V. Vrba and Abdullah, {W. A.T.Wan} and P. Warin-Charpentier and Wong, {M. L.} and Wong, {T. S.} and C. Wu and Xing, {T. Y.} and H. Yamaguchi and A. Yamamoto and M. Yamanaka and T. Yamane and Y. Yang and T. Yano and Yao, {W. C.} and B. Yeo and H. Yoshida and M. Yoshida and T. Yoshioka and Y. Yuan and Yudin, {Yu V.} and Zdorovets, {M. V.} and J. Zhang and Y. Zhang and K. Zuber",

note = "Funding Information: We thank KEK and J-PARC, Japan for their support of infrastructure and the operation ofCOMET. Thiswork is supported in part by: the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Nos. 25000004 and 18H05231; JSPS KAKENHI Grant No. JP17H06135; the Belarusian Republican Foundation for Fundamental Research Grant F18R-006; the National Natural Science Foundation of China (NSFC) under Contract Nos. 11335009 and 11475208; the research program of the Institute of High Energy Physics (IHEP) under Contract No. Y3545111U2; the State Key Laboratory of Particle Detection and Electronics of IHEP, China, under Contract No. H929420BTD; supercomputer funding in Sun Yat-Sen University, China; the National Institute of Nuclear Physics and Particle Physics (IN2P3), France; the Shota Rustaveli National Science Foundation of Georgia (SRNSFG), grant No. DI-18-293; a Deutsche Forschungsgemeinschaft grant STO 876/7-1 of Germany; the Joint Institute for Nuclear Research (JINR), project COMET #1134; the Institute for Basic Science (IBS) of the Republic of Korea under Project No. IBS-R017-D1-2018-a00; the Ministry of Education and Science of the Russian Federation and by the Russian Fund for Basic Research grants: 17-02-01073, 18-52-00004; the Science and Technology Facilities Council, UK; the JSPS London Short Term Predoctoral Fellowship program, a Daiwa Anglo-Japanese Foundation Small Grant; and a Royal Society International Joint Projects Grant. Crucial computing support from all partners is gratefully acknowledged, in particular from CC-IN2P3, France; GridPP, UK; andYandex Data Factory, Russia, which also contributed expertise on machine learning methods. Funding Information: We thank KEK and J-PARC, Japan for their support of infrastructure and the operation of COMET. This work is supported in part by: the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Nos. 25000004 and 18H05231; JSPS KAKENHI Grant No. JP17H06135; the Belarusian Republican Foundation for Fundamental Research Grant F18R-006; the National Natural Science Foundation of China (NSFC) under Contract Nos. 11335009 and 11475208; the research program of the Institute of High Energy Physics (IHEP) under Contract No. Y3545111U2; the State Key Laboratory of Particle Detection and Electronics of IHEP, China, under Contract No. H929420BTD; supercomputer funding in Sun Yat-Sen University, China; the National Institute of Nuclear Physics and Particle Physics (IN2P3), France; the Shota Rustaveli National Science Foundation of Georgia (SRNSFG), grant No. DI-18-293; a Deutsche Forschungsgemeinschaft grant STO 876/7-1 of Germany; the Joint Institute for Nuclear Research (JINR), project COMET #1134; the Institute for Basic Science (IBS) of the Republic of Korea under Project No. IBS-R017-D1-2018-a00; the Ministry of Education and Science of the Russian Federation and by the Russian Fund for Basic Research grants: 17-02-01073, 18-52-00004; the Science and Technology Facilities Council, UK; the JSPS London Short Term Predoctoral Fellowship program, a Daiwa Anglo-Japanese Foundation Small Grant; and a Royal Society International Joint Projects Grant. Crucial computing support from all partners is gratefully acknowledged, in particular from CC-IN2P3, France; GridPP, UK; and Yandex Data Factory, Russia, which also contributed expertise on machine learning methods. Funding Information: and signal discrimination are performed by the ASD (amplifier shaper discriminator) chip9, and the amplified signal is then digitized by a DRS4 chip [76]. The digitized waveform data, correction data, and relevant metadata are then sent out via an optical fiber. The FPGA also has other input/output lines for triggering and JTAG connections. Development of the ROESTI board is supported by the KEK Electronics Group and the Open Source Consortium of Instrumentation (OpenIt). Publisher Copyright: {\textcopyright} 2020 The Author(s).",

year = "2020",

month = mar,

day = "13",

doi = "10.1093/ptep/ptz125",

language = "English",

volume = "2020",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

number = "3",

}

TY - JOUR

T1 - COMET Phase-I technical design report

AU - Abramishvili, R.

AU - Adamov, G.

AU - Akhmetshin, R. R.

AU - Allin, A.

AU - Angélique, J. C.

AU - Anishchik, V.

AU - Aoki, M.

AU - Aznabayev, D.

AU - Bagaturia, I.

AU - Ban, G.

AU - Ban, Y.

AU - Bauer, D.

AU - Baygarashev, D.

AU - Bondar, A. E.

AU - Cârloganu, C.

AU - Carniol, B.

AU - Chau, T. T.

AU - Chen, J. K.

AU - Chen, S. J.

AU - Cheung, Y. E.

AU - Da Silva, W.

AU - Dauncey, P. D.

AU - Densham, C.

AU - Devidze, G.

AU - Dornan, P.

AU - Drutskoy, A.

AU - Duginov, V.

AU - Eguchi, Y.

AU - Epshteyn, L. B.

AU - Evtoukhovitch, P.

AU - Fayer, S.

AU - Fedotovich, G. V.

AU - Finger, M.

AU - Fujii, Y.

AU - Fukao, Y.

AU - Gabriel, J. L.

AU - Gay, P.

AU - Gillies, E.

AU - Grigoriev, D. N.

AU - Gritsay, K.

AU - Hai, V. H.

AU - Hamada, E.

AU - Hashim, I. H.

AU - Hashimoto, S.

AU - Hayashi, O.

AU - Hayashi, T.

AU - Hiasa, T.

AU - Ibrahim, Z. A.

AU - Igarashi, Y.

AU - Ignatov, F. V.

AU - Iio, M.

AU - Ishibashi, K.

AU - Issadykov, A.

AU - Itahashi, T.

AU - Jansen, A.

AU - Jiang, X. S.

AU - Jonsson, P.

AU - Kachelhoffer, T.

AU - Kalinnikov, V.

AU - Kaneva, E.

AU - Kapusta, F.

AU - Katayama, H.

AU - Kawagoe, K.

AU - Kawashima, R.

AU - Kazak, N.

AU - Kazanin, V. F.

AU - Kemularia, O.

AU - Khvedelidze, A.

AU - Koike, M.

AU - Kormoll, T.

AU - Kozlov, G. A.

AU - Kozyrev, A. N.

AU - Kravchenko, M.

AU - Krikler, B.

AU - Kumsiashvili, G.

AU - Kuno, Y.

AU - Kuriyama, Y.

AU - Kurochkin, Y.

AU - Kurup, A.

AU - Lagrange, B.

AU - Lai, J.

AU - Lee, M. J.

AU - Li, H. B.

AU - Litchfield, R. P.

AU - Li, W. G.

AU - Loan, T.

AU - Lomidze, D.

AU - Lomidze, I.

AU - Loveridge, P.

AU - Macharashvili, G.

AU - Makida, Y.

AU - Mao, Y. J.

AU - Markin, O.

AU - Matsuda, Y.

AU - Melkadze, A.

AU - Melnik, A.

AU - Mibe, T.

AU - Mihara, S.

AU - Miyamoto, N.

AU - Miyazaki, Y.

AU - Mohamad Idris, F.

AU - Azmi, K. A.Mohamed Kamal

AU - Moiseenko, A.

AU - Moritsu, M.

AU - Mori, Y.

AU - Motoishi, T.

AU - Nakai, H.

AU - Nakai, Y.

AU - Nakamoto, T.

AU - Nakamura, Y.

AU - Nakatsugawa, Y.

AU - Nakazawa, Y.

AU - Nash, J.

AU - Natori, H.

AU - Niess, V.

AU - Nioradze, M.

AU - Nishiguchi, H.

AU - Noguchi, K.

AU - Numao, T.

AU - O'dell, J.

AU - Ogitsu, T.

AU - Ohta, S.

AU - Oishi, K.

AU - Okamoto, K.

AU - Okamura, T.

AU - Okinaka, K.

AU - Omori, C.

AU - Ota, T.

AU - Pasternak, J.

AU - Paulau, A.

AU - Picters, D.

AU - Ponariadov, V.

AU - Quémener, G.

AU - Ruban, A. A.

AU - Rusinov, V.

AU - Sabirov, B.

AU - Sakamoto, H.

AU - Sarin, P.

AU - Sasaki, K.

AU - Sato, A.

AU - Sato, J.

AU - Semertzidis, Y. K.

AU - Shigyo, N.

AU - Shoukavy, Dz

AU - Slunecka, M.

AU - Stöckinger, D.

AU - Sugano, M.

AU - Tachimoto, T.

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N1 - Funding Information: We thank KEK and J-PARC, Japan for their support of infrastructure and the operation ofCOMET. Thiswork is supported in part by: the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Nos. 25000004 and 18H05231; JSPS KAKENHI Grant No. JP17H06135; the Belarusian Republican Foundation for Fundamental Research Grant F18R-006; the National Natural Science Foundation of China (NSFC) under Contract Nos. 11335009 and 11475208; the research program of the Institute of High Energy Physics (IHEP) under Contract No. Y3545111U2; the State Key Laboratory of Particle Detection and Electronics of IHEP, China, under Contract No. H929420BTD; supercomputer funding in Sun Yat-Sen University, China; the National Institute of Nuclear Physics and Particle Physics (IN2P3), France; the Shota Rustaveli National Science Foundation of Georgia (SRNSFG), grant No. DI-18-293; a Deutsche Forschungsgemeinschaft grant STO 876/7-1 of Germany; the Joint Institute for Nuclear Research (JINR), project COMET #1134; the Institute for Basic Science (IBS) of the Republic of Korea under Project No. IBS-R017-D1-2018-a00; the Ministry of Education and Science of the Russian Federation and by the Russian Fund for Basic Research grants: 17-02-01073, 18-52-00004; the Science and Technology Facilities Council, UK; the JSPS London Short Term Predoctoral Fellowship program, a Daiwa Anglo-Japanese Foundation Small Grant; and a Royal Society International Joint Projects Grant. Crucial computing support from all partners is gratefully acknowledged, in particular from CC-IN2P3, France; GridPP, UK; andYandex Data Factory, Russia, which also contributed expertise on machine learning methods. Funding Information: We thank KEK and J-PARC, Japan for their support of infrastructure and the operation of COMET. This work is supported in part by: the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Nos. 25000004 and 18H05231; JSPS KAKENHI Grant No. JP17H06135; the Belarusian Republican Foundation for Fundamental Research Grant F18R-006; the National Natural Science Foundation of China (NSFC) under Contract Nos. 11335009 and 11475208; the research program of the Institute of High Energy Physics (IHEP) under Contract No. Y3545111U2; the State Key Laboratory of Particle Detection and Electronics of IHEP, China, under Contract No. H929420BTD; supercomputer funding in Sun Yat-Sen University, China; the National Institute of Nuclear Physics and Particle Physics (IN2P3), France; the Shota Rustaveli National Science Foundation of Georgia (SRNSFG), grant No. DI-18-293; a Deutsche Forschungsgemeinschaft grant STO 876/7-1 of Germany; the Joint Institute for Nuclear Research (JINR), project COMET #1134; the Institute for Basic Science (IBS) of the Republic of Korea under Project No. IBS-R017-D1-2018-a00; the Ministry of Education and Science of the Russian Federation and by the Russian Fund for Basic Research grants: 17-02-01073, 18-52-00004; the Science and Technology Facilities Council, UK; the JSPS London Short Term Predoctoral Fellowship program, a Daiwa Anglo-Japanese Foundation Small Grant; and a Royal Society International Joint Projects Grant. Crucial computing support from all partners is gratefully acknowledged, in particular from CC-IN2P3, France; GridPP, UK; and Yandex Data Factory, Russia, which also contributed expertise on machine learning methods. Funding Information: and signal discrimination are performed by the ASD (amplifier shaper discriminator) chip9, and the amplified signal is then digitized by a DRS4 chip [76]. The digitized waveform data, correction data, and relevant metadata are then sent out via an optical fiber. The FPGA also has other input/output lines for triggering and JTAG connections. Development of the ROESTI board is supported by the KEK Electronics Group and the Open Source Consortium of Instrumentation (OpenIt). Publisher Copyright: © 2020 The Author(s).

PY - 2020/3/13

Y1 - 2020/3/13

N2 - 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 aluminum nucleus (μ-e conversion, μ-N → e-N); a lepton flavor-violating process. The experimental sensitivity goal for this process in the Phase-I experiment is 3.1 × 10-15, or 90% upper limit of a branching ratio of 7 × 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 μ-e 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.

AB - 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 aluminum nucleus (μ-e conversion, μ-N → e-N); a lepton flavor-violating process. The experimental sensitivity goal for this process in the Phase-I experiment is 3.1 × 10-15, or 90% upper limit of a branching ratio of 7 × 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 μ-e 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.

UR - http://www.scopus.com/inward/record.url?scp=85082198127&partnerID=8YFLogxK

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U2 - 10.1093/ptep/ptz125

DO - 10.1093/ptep/ptz125

M3 - Article

AN - SCOPUS:85082198127

SN - 2050-3911

VL - 2020

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 3

M1 - 033C01

ER -

COMET Phase-I technical design report

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