COMET Phase-I technical design report
Author:
Abramishvili R1, Adamov G12, Akhmetshin R R34, Allin A5, Angélique J C6, Anishchik V7, Aoki M8, Aznabayev D9, Bagaturia I1, Ban G6, Ban Y10, Bauer D11, Baygarashev D9, Bondar A E34, Cârloganu C12, Carniol B6, Chau T T8, Chen J K13, Chen S J14, Cheung Y E14, da Silva W15, Dauncey P D11, Densham C16, Devidze G17, Dornan P11, Drutskoy A518, Duginov V2, Eguchi Y8, Epshteyn L B3419, Evtoukhovitch P220, Fayer S11, Fedotovich G V34, Finger Jr M21, Finger M21, Fujii Y22, Fukao Y23, Gabriel J L6, Gay P12, Gillies E11, Grigoriev D N3419, Gritsay K2, Hai V H24, Hamada E23, Hashim I H25, Hashimoto S26, Hayashi O8, Hayashi T8, Hiasa T8, Ibrahim Z A25, Igarashi Y23, Ignatov F V34, Iio M23, Ishibashi K26, Issadykov A9, Itahashi T8, Jansen A27, Jiang X S28, Jonsson P11, Kachelhoffer T29, Kalinnikov V2, Kaneva E2, Kapusta F15, Katayama H8, Kawagoe K26, Kawashima R26, Kazak N20, Kazanin V F34, Kemularia O1, Khvedelidze A21, Koike M30, Kormoll T27, Kozlov G A2, Kozyrev A N34, Kravchenko M27, Krikler B11, Kumsiashvili G8, Kuno Y8, Kuriyama Y31, Kurochkin Y20, Kurup A11, Lagrange B1131, Lai J8, Lee M J32, Li H B2833, Litchfield R P11, Li W G28, Loan T24, Lomidze D1, Lomidze I1, Loveridge P16, Macharashvili G17, Makida Y23, Mao Y J10, Markin O518, Matsuda Y8, Melkadze A1, Melnik A20, Mibe T23, Mihara S23, Miyamoto N8, Miyazaki Y26, Mohamad Idris F25, Azmi K A Mohamed Kamal25, Moiseenko A2, Moritsu M23, Mori Y31, Motoishi T8, Nakai H8, Nakai Y26, Nakamoto T23, Nakamura Y8, Nakatsugawa Y28, Nakazawa Y8, Nash J22, Natori H3234, Niess V12, Nioradze M17, Nishiguchi H23, Noguchi K26, Numao T35, O’Dell J16, Ogitsu T23, Ohta S8, Oishi K26, Okamoto K8, Okamura T23, Okinaka K8, Omori C23, Ota T36, Pasternak J11, Paulau A202, Picters D8, Ponariadov V7, Quémener G6, Ruban A A34, Rusinov V518, Sabirov B2, Sakamoto H8, Sarin P37, Sasaki K23, Sato A8, Sato J38, Semertzidis Y K3239, Shigyo N26, Shoukavy Dz20, Slunecka M21, Stöckinger D27, Sugano M23, Tachimoto T8, Takayanagi T8, Tanaka M23, Tang J13, Tao C V24, Teixeira A M12, Tevzadze Y17, Thanh T24, Tojo J26, Tolmachev S S34, Tomasek M40, Tomizawa M23, Toriashvili T1, Trang H24, Trekov I17, Tsamalaidze Z21, Tsverava N21, Uchida T23, Uchida Y11, Ueno K23, Velicheva E2, Volkov A2, Vrba V40, Abdullah W A T Wan25, Warin-Charpentier P15, Wong M L8, Wong T S8, Wu C28148, Xing T Y2833, Yamaguchi H23, Yamamoto A23, Yamanaka M4142, Yamane T8, Yang Y26, Yano T8, Yao W C8, Yeo B39, Yoshida H8, Yoshida M23, Yoshioka T26, Yuan Y28, Yudin Yu V34, Zdorovets M V9, Zhang J28, Zhang Y28, Zuber K27,
Affiliation:
1. Georgian Technical University (GTU), 0160 Tbilisi, Georgia 2. Joint Institute for Nuclear Research (JINR), Dubna, 141980, Russia 3. Budker Institute of Nuclear Physics (BINP), Novosibirsk, 630090, Russia 4. Novosibirsk State University (NSU), Novosibirsk, 630090, Russia 5. P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, 119991, Russia 6. Laboratoire de Physique Corpusculaire (LPC), 14000 Caen, France 7. Belarusian State University (BSU), 220030, Minsk, Belarus 8. Osaka University, Osaka 560-0043, Japan 9. Institute of Nuclear Physics (INP), Almaty, 050032, Kazakhstan 10. Peking University, Beijing 100871, People’s Republic of China 11. Imperial College London, London SW7 2BW, UK 12. Laboratoire de Physique de Clermont (LPC), CNRS-IN2P3 and Université Clermont Auvergne, 63178 Clermont-Ferrand, France 13. Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China 14. Nanjing University, Nanjing 210093, People’s Republic of China 15. Laboratory of Nuclear and High Energy Physics (LPNHE), CNRS-IN2P3 and Sorbonne Université, 75252 Paris, France 16. STFC Rutherford Appleton Laboratory (RAL), Didcot, Oxon OX11 0QX, UK 17. High Energy Physics Institute of I. Javakhishvili Tbilisi State University (HEPI-TSU), 0186 Tbilisi, Georgia 18. Moscow Physical Engineering Institute, National University, Moscow, 115409, Russia 19. Novosibirsk State Technical University (NSTU), Novosibirsk, 630073, Russia 20. B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 220072, Minsk, Belarus 21. Charles University, Prague, 116 36, Czech Republic 22. Monash University, Melbourne, Victoria 3800, Australia 23. High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0031, Japan 24. University of Science, Vietnam National University, Ho Chi Minh City, Vietnam 25. National Centre for Particle Physics, Universiti Malaya, 50603 Kuala Lumpur, Malaysia 26. Kyushu University, Fukuoka 819-0395, Japan 27. Technische Universität Dresden, 01062 Dresden, Germany 28. Institute of High Energy Physics (IHEP), Beijing 100049, People’s Republic of China 29. Computing Center of the National Institute of Nuclear Physics and Particle Physics (CC-IN2P3), 69627 Villeurbanne, France 30. Utsunomiya University, Utsunomiya, Tochigi 321-8585, Japan 31. Research Reactor Institute, Kyoto University, Kyoto 606-8501, Japan 32. Institute for Basic Science, Daejeon, 34051, Korea 33. University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 34. Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan 35. TRIUMF, Vancouver, BC V6T 2A3, Canada 36. Departamento de Fídesica Teórica and Instituto de Fídesica Teórica, IFT-UAM/CSIC, Universidad Autónoma de Madrid, 28049 Madrid, Spain 37. Indian Institute of Technology Bombay, Mumbai 400076, India 38. Saitama University, Saitama 338-8570, Japan 39. Korea Advanced Institute of Science and Technology, Daejeon, 34141, Korea 40. Czech Technical University, Prague, 160 00, Czech Republic 41. Kyushu Sangyo University, Fukuoka 813-8503, Japan 42. Nambu Yoichiro Institute of Theoretical and Experimental Physics (NITEP), Osaka City University, Osaka 558-8585, Japan
Abstract
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 ($\mu$–$e$ conversion, $\mu^{-}N \rightarrow e^{-}N$); 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 a 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 $\mu$–$e$ 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.
Publisher
Oxford University Press (OUP)
Subject
General Physics and Astronomy
Cited by
78 articles.
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