The study of high-efficiency pion production

Yao, Weichao; Aoki, Masaharu; Wu, Chen; Oishi, Kou; Fukao, Yoshinori

doi:https://doi.org/10.1140/epjp/s13360-025-06164-9

The study of high-efficiency pion production

Yao, Weichao; Aoki, Masaharu; Wu, Chen et al.

European Physical Journal Plus, 2025, 140, 267

アクセス数:282件（2026-02-16 20:57 集計）

固定URL: https://hdl.handle.net/11094/101111

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タイトル	The study of high-efficiency pion production
著者	著者名 Yao, Weichao
	NRID 1000080290849 1000080290849 researchmap permalink read0068237 read0068237 Scopus Author ID 56453834100 56453834100 著者名 Aoki, Masaharu
	著者名 Wu, Chen
	著者名 Oishi, Kou
	NRID 1000080443018 1000080443018 著者名 Fukao, Yoshinori
内容	The version of record of this article, first published in Radiological Physics and Technology, is available online at Publisher’s website: https://doi.org/10.1140/epjp/s13360-025-06164-9.
抄録	An optimization study was conducted on low-energy pion production using a cylindrical tungsten target for the COMET Phase-II experiment, taking into account recent measurements of proton-beam emittance. The study suggests factor 1.6 of improvement in pion production efficiency by reducing the target radius down to 4 mm. This enhancement is attributed to the reduction in the emittance of the proton beam. Further increases in target radius simply reduce the yield of low-energy pions and, consequently, the stopping rate of low-energy muons in the muon stopping target. The analysis reveals that the pion production spectrum at higher momentum cannot compensate for the limitations imposed by the range–momentum curve of pions. There is a potential further improvement in low-energy pion production with an ideally narrow proton beam.
出版者	Springer Science and Business Media Deutschland GmbH
収録物名	European Physical Journal Plus
巻(号)	140
ページ	267
刊行年月	2025-04-02
言語	英語
ハンドルURL	https://hdl.handle.net/11094/101111
eISSN	21905444
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1140/epjp/s13360-025-06164-9
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	European Physical Journal Plus. 2025, 140, p. 267
DC.title	The study of high-efficiency pion production
DC.creator	Yao, Weichao
	Aoki, Masaharu
	Wu, Chen
	Oishi, Kou
	Fukao, Yoshinori
DC.publisher	Springer Science and Business Media Deutschland GmbH
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-04-02
DC.identifier	https://doi.org/10.1140/epjp/s13360-025-06164-9
DC.description	The version of record of this article, first published in Radiological Physics and Technology, is available online at Publisher’s website: https://doi.org/10.1140/epjp/s13360-025-06164-9.
DCTERMS.abstract	An optimization study was conducted on low-energy pion production using a cylindrical tungsten target for the COMET Phase-II experiment, taking into account recent measurements of proton-beam emittance. The study suggests factor 1.6 of improvement in pion production efficiency by reducing the target radius down to 4 mm. This enhancement is attributed to the reduction in the emittance of the proton beam. Further increases in target radius simply reduce the yield of low-energy pions and, consequently, the stopping rate of low-energy muons in the muon stopping target. The analysis reveals that the pion production spectrum at higher momentum cannot compensate for the limitations imposed by the range–momentum curve of pions. There is a potential further improvement in low-energy pion production with an ideally narrow proton beam.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	101111
citation_title	The study of high-efficiency pion production
citation_author	Yao, Weichao
	Aoki, Masaharu
	Wu, Chen
	Oishi, Kou
	Fukao, Yoshinori
citation_publisher	Springer Science and Business Media Deutschland GmbH
citation_language	英語
citation_date	2025-04-02
citation_journal_title	European Physical Journal Plus
citation_volume	140
citation_firstpage	267
citation_doi	https://doi.org/10.1140/epjp/s13360-025-06164-9
citation_public_url	https://hdl.handle.net/11094/101111

The study of high-efficiency pion production

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