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Main Title: Measurement of muon-induced neutron yield at the China Jinping Underground Laboratory
Author(s): Zhao, Lin
Luo, Wentai
Bathe-Peters, Lars
Chen, Shaomin
Chouaki, Mourad
Dou, Wei
Guo, Lei
Guo, Ziyi
Hussain, Ghulam
Li, Jinjing
Liang, Ye
Liu, Qian
Luo, Guang
Qi, Ming
Shao, Wenhui
Tang, Jian
Wan, Linyan
Wang, Zhe
Wu, Yiyang
Xu, Benda
Xu, Tong
Xu, Weiran
Yang, Yuzi
Yeh, Minfang
Zhang, Aiqiang
Zhang, Bin
Type: Article
Abstract: Solar, terrestrial, and supernova neutrino experiments are subject to muon-induced radioactive background. The China Jinping Underground Laboratory (CJPL), with its unique advantage of a 2400 m rock coverage and long distance from nuclear power plants, is ideal for MeV-scale neutrino experiments. Using a 1-ton prototype detector of the Jinping Neutrino Experiment (JNE), we detected 343 high-energy cosmic-ray muons and (7.86 3.97) muon-induced neutrons from an 820.28-day dataset at the first phase of CJPL (CJPL-I). Based on the muon-induced neutrons, we measured the corresponding muon-induced neutron yield in a liquid scintillator to be μ−1g−1cm2 at an average muon energy of 340 GeV. We provided the first study for such neutron background at CJPL. A global fit including this measurement shows a power-law coefficient of (0.75 0.02) for the dependence of the neutron yield at the liquid scintillator on muon energy.
Subject(s): underground laboratory
neutrino detector
cosmic-ray muon
neutron yield
liquid scintillator
Issue Date: 2022
Date Available: 1-Aug-2022
Language Code: en
DDC Class: 530 Physik
Journal Title: Chinese Physics C
Publisher: IOP
Volume: 46
Issue: 8
Article Number: 085001
Publisher DOI: 10.1088/1674-1137/ac66cc
ISSN: 1674-1137
TU Affiliation(s): Fak. 2 Mathematik und Naturwissenschaften » Inst. Theoretische Physik
Appears in Collections:Technische Universität Berlin » Publications

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