The study of high-efficiency pion production

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

European Physical Journal Plus, 2025, 140, 267

Number of Access:251（2025-11-17 14:44 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/101111

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Title
The study of high-efficiency pion production
Creator
CreatorName
Yao, Weichao
NRID
1000080290849 1000080290849
researchmap permalink
read0068237 read0068237
Scopus Author ID
56453834100 56453834100
CreatorName
Aoki, Masaharu
CreatorName
Wu, Chen
CreatorName
Oishi, Kou
NRID
1000080443018 1000080443018
CreatorName
Fukao, Yoshinori
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.
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.
Publisher
Springer Science and Business Media Deutschland GmbH
Source Title
European Physical Journal Plus
Volume (Issue)
140
Page
267
Date of Issued
2025-04-02
Language
English
Handle URL
https://hdl.handle.net/11094/101111
eISSN
21905444
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1140/epjp/s13360-025-06164-9
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article