| Autor: |
Zhao, Lin, Luo, Wentai, Peters, Lars Bathe, 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, Bin |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
2022 Chinese Phys. C 46 085001 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/1674-1137/ac66cc |
| Popis: |
Solar, terrestrial, and supernova neutrino experiments are subject to muon-induced radioactive backgrounds. 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$ \pm $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 $ (3.44 \pm 1.86_{\rm stat.}\pm 0.76_{\rm syst.})\times 10^{-4}\mu ^{-1}\rm g^{-1}cm^{2} $ at an average muon energy of \SI{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$ \pm $0.02) for the dependence of the neutron yield at the liquid scintillator on muon energy. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
