Su Jian, Zeng Zhi, Liu Yue, et al. Monte Carlo simulation of muon radiation environment in China Jinping Underground Laboratory[J]. High Power Laser and Particle Beams, 2012, 24: 3015-3018. doi: 10.3788/HPLPB20122412.3015
Citation:
Su Jian, Zeng Zhi, Liu Yue, et al. Monte Carlo simulation of muon radiation environment in China Jinping Underground Laboratory[J]. High Power Laser and Particle Beams, 2012, 24: 3015-3018. doi: 10.3788/HPLPB20122412.3015
Su Jian, Zeng Zhi, Liu Yue, et al. Monte Carlo simulation of muon radiation environment in China Jinping Underground Laboratory[J]. High Power Laser and Particle Beams, 2012, 24: 3015-3018. doi: 10.3788/HPLPB20122412.3015
Citation:
Su Jian, Zeng Zhi, Liu Yue, et al. Monte Carlo simulation of muon radiation environment in China Jinping Underground Laboratory[J]. High Power Laser and Particle Beams, 2012, 24: 3015-3018. doi: 10.3788/HPLPB20122412.3015
Key Laboratory of High Energy Radiation Imaging Fundamental Science for National Defense Key Laboratory of Particle and Radiation Imaging,Ministry of Education,Department of Engineering Physics,Tsinghua University,Beijing 100084,China
Muon radiation background of China Jinping Underground Laboratory (CJPL) was simulated by Monte Carlo method. According to the Gaisser formula and the MUSIC soft, the model of cosmic ray muons was established. Then the yield and the average energy of muon-induced photons and muon-induced neutrons were simulated by FLUKA. With the single-energy approximation, the contribution to the radiation background of shielding structure by secondary photons and neutrons was evaluated. The estimation results show that the average energy of residual muons is 369 GeV and the flux is 3.1710-6m-2s-1. The fluence rate of secondary photons is about 1.5710-4 m-2s-1, and the fluence rate of secondary neutrons is about 8.3710-7 m-2s-1. The muon radiation background of CJPL is lower than those of most other underground laboratories in the world.
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