Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment

Noguchi Kyohei; Yuki Fujii; Yoshinori Fukao; Yoshinori Hashimoto; Yuya Higuchi; Ryotaro Honda; Yoichi Igarashi; Fumihito Ikeda; Satoshi Mihara; Ryotaro Muto; Yu Nakazawa; Hajime Nishiguchi; Kou Oishi; Masayoshi Shoji; Fumihiko Tamura; Junji Tojo; Masahito Tomizawa; Kazuki Ueno; Hisataka Yoshida

doi:10.22323/1.402.0104

Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment

Noguchi Kyohei, Yuki Fujii, Yoshinori Fukao, Yoshinori Hashimoto, Yuya Higuchi, Ryotaro Honda, Yoichi Igarashi, Fumihito Ikeda, Satoshi Mihara, Ryotaro Muto, Yu Nakazawa, Hajime Nishiguchi, Kou Oishi, Masayoshi Shoji, Fumihiko Tamura, Junji Tojo, Masahito Tomizawa, Kazuki Ueno, Hisataka Yoshida

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

1 Citation (Scopus)

Abstract

The COMET experiment aims to search for the neutrinoless conversion of a muon to an electron in a muonic atom. This experiment utilizes a bunched slow-extracted (bunched-SX) proton beam at 8 GeV from the J-PARC main ring synchrotron. To achieve a sensitivity of 10⁻¹⁷, the fraction of inter-bunch stray protons, called extinction, must be less than 10⁻¹⁰. The 8 GeV proton beam commissioning with a bunched-SX beam for the COMET experiment was performed in May 2021. The extinction was measured by counting all secondary pions in the K1.8BR secondary beamline in the J-PARC Hadron Experimental Facility. After the extinction studies tried out several setups, the most extinction achievable setup was performed with O(10¹⁰) statistics. This paper reports the extinction measurement and the current analysis status.

Original language	English
Title of host publication	Proceedings of Science
Place of Publication	Italy
Publisher	Sissa Medialab, SRL
Number of pages	5
Volume	402
DOIs	https://doi.org/10.22323/1.402.0104
Publication status	Published - 31 Mar 2022
Event	International Workshop on Neutrinos from Accelerators, 2021 - Cagliari, Italy Duration: 6 Sept 2021 → 11 Sept 2021 Conference number: 22nd

Publication series

Name	Proceedings of Science
Publisher	Sissa Medialab, SRL
ISSN (Print)	1824-8039

Conference

Conference	International Workshop on Neutrinos from Accelerators, 2021
Abbreviated title	NuFact 2021
Country/Territory	Italy
City	Cagliari
Period	6/09/21 → 11/09/21

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Kyohei, N., Fujii, Y., Fukao, Y., Hashimoto, Y., Higuchi, Y., Honda, R., Igarashi, Y., Ikeda, F., Mihara, S., Muto, R., Nakazawa, Y., Nishiguchi, H., Oishi, K., Shoji, M., Tamura, F., Tojo, J., Tomizawa, M., Ueno, K., & Yoshida, H. (2022). Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment. In Proceedings of Science (Vol. 402). Article 104 (Proceedings of Science). Sissa Medialab, SRL. https://doi.org/10.22323/1.402.0104

@inproceedings{8e27f37e91b44af88117ed6ff3e8cc02,

title = "Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment",

abstract = "The COMET experiment aims to search for the neutrinoless conversion of a muon to an electron in a muonic atom. This experiment utilizes a bunched slow-extracted (bunched-SX) proton beam at 8 GeV from the J-PARC main ring synchrotron. To achieve a sensitivity of 10−17, the fraction of inter-bunch stray protons, called extinction, must be less than 10−10. The 8 GeV proton beam commissioning with a bunched-SX beam for the COMET experiment was performed in May 2021. The extinction was measured by counting all secondary pions in the K1.8BR secondary beamline in the J-PARC Hadron Experimental Facility. After the extinction studies tried out several setups, the most extinction achievable setup was performed with O(1010) statistics. This paper reports the extinction measurement and the current analysis status.",

author = "Noguchi Kyohei and Yuki Fujii and Yoshinori Fukao and Yoshinori Hashimoto and Yuya Higuchi and Ryotaro Honda and Yoichi Igarashi and Fumihito Ikeda and Satoshi Mihara and Ryotaro Muto and Yu Nakazawa and Hajime Nishiguchi and Kou Oishi and Masayoshi Shoji and Fumihiko Tamura and Junji Tojo and Masahito Tomizawa and Kazuki Ueno and Hisataka Yoshida",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons; International Workshop on Neutrinos from Accelerators, 2021, NuFact 2021 ; Conference date: 06-09-2021 Through 11-09-2021",

year = "2022",

month = mar,

day = "31",

doi = "10.22323/1.402.0104",

language = "English",

volume = "402",

series = "Proceedings of Science",

publisher = "Sissa Medialab, SRL",

booktitle = "Proceedings of Science",

}

Kyohei, N, Fujii, Y, Fukao, Y, Hashimoto, Y, Higuchi, Y, Honda, R, Igarashi, Y, Ikeda, F, Mihara, S, Muto, R, Nakazawa, Y, Nishiguchi, H, Oishi, K, Shoji, M, Tamura, F, Tojo, J, Tomizawa, M, Ueno, K & Yoshida, H 2022, Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment. in Proceedings of Science. vol. 402, 104, Proceedings of Science, Sissa Medialab, SRL, Italy, International Workshop on Neutrinos from Accelerators, 2021, Cagliari, Italy, 6/09/21. https://doi.org/10.22323/1.402.0104

TY - GEN

T1 - Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment

AU - Kyohei, Noguchi

AU - Fujii, Yuki

AU - Fukao, Yoshinori

AU - Hashimoto, Yoshinori

AU - Higuchi, Yuya

AU - Honda, Ryotaro

AU - Igarashi, Yoichi

AU - Ikeda, Fumihito

AU - Mihara, Satoshi

AU - Muto, Ryotaro

AU - Nakazawa, Yu

AU - Nishiguchi, Hajime

AU - Oishi, Kou

AU - Shoji, Masayoshi

AU - Tamura, Fumihiko

AU - Tojo, Junji

AU - Tomizawa, Masahito

AU - Ueno, Kazuki

AU - Yoshida, Hisataka

N1 - Conference code: 22nd

PY - 2022/3/31

Y1 - 2022/3/31

N2 - The COMET experiment aims to search for the neutrinoless conversion of a muon to an electron in a muonic atom. This experiment utilizes a bunched slow-extracted (bunched-SX) proton beam at 8 GeV from the J-PARC main ring synchrotron. To achieve a sensitivity of 10−17, the fraction of inter-bunch stray protons, called extinction, must be less than 10−10. The 8 GeV proton beam commissioning with a bunched-SX beam for the COMET experiment was performed in May 2021. The extinction was measured by counting all secondary pions in the K1.8BR secondary beamline in the J-PARC Hadron Experimental Facility. After the extinction studies tried out several setups, the most extinction achievable setup was performed with O(1010) statistics. This paper reports the extinction measurement and the current analysis status.

AB - The COMET experiment aims to search for the neutrinoless conversion of a muon to an electron in a muonic atom. This experiment utilizes a bunched slow-extracted (bunched-SX) proton beam at 8 GeV from the J-PARC main ring synchrotron. To achieve a sensitivity of 10−17, the fraction of inter-bunch stray protons, called extinction, must be less than 10−10. The 8 GeV proton beam commissioning with a bunched-SX beam for the COMET experiment was performed in May 2021. The extinction was measured by counting all secondary pions in the K1.8BR secondary beamline in the J-PARC Hadron Experimental Facility. After the extinction studies tried out several setups, the most extinction achievable setup was performed with O(1010) statistics. This paper reports the extinction measurement and the current analysis status.

UR - https://www.scopus.com/pages/publications/85128910009

U2 - 10.22323/1.402.0104

DO - 10.22323/1.402.0104

M3 - Conference Paper

AN - SCOPUS:85128910009

VL - 402

T3 - Proceedings of Science

BT - Proceedings of Science

PB - Sissa Medialab, SRL

CY - Italy

T2 - International Workshop on Neutrinos from Accelerators, 2021

Y2 - 6 September 2021 through 11 September 2021

ER -

Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment

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