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题名: GEANT4 Simulation of Neutron Detector for DAMPE
作者: He Ming; Ma Tao; Chang Jin; Zhang Yan; Huang Yongyi; Zang Jingjing; Wu Jian; Dong Tiekuang
刊名: Acta Astronomica Sinica
出版日期: 2016
卷号: 57, 期号:1, 页码:1-8
DOI: 0001-5245(2016)57:1<1:AWZLZT>2.0.TX;2-5
英文摘要: During recent tens of years dark matter has gradually become a hot topic in astronomical research field, and related theory researches and experiment projects change with each passing day. The Dark Matter Particle Explorer (DAMPE) of our country is proposed under this background. As the probing object involves high energy electrons, appropriate methods must be taken to distinguish them from protons in order to reduce the event probability of other charged particles (e.g. a proton) being mistaken as electrons. The experiments show that, the hadronic shower of high energy proton in BGO electromagnetic calorimeter, which is usually accompanied by the emitting of large number of secondary neutrons, is significantly different from the electromagnetic shower of high energy electron. Through the detection of secondary neutron signal emitting from the bottom of BGO electromagnetic calorimeter and the shower shape of incident particles in BGO electromagnetic calorimeter, we can effectively distinguish whether the incident particles are high energy protons or electrons. This paper introduces the structure and detecting principle of DAMPE neutron detector. We use Monte-Carlo method with GEANT4 software to simulate the signal emitting from protons and electrons at characteristic energy in the neutron detector, and finally summarize the neutron detector's ability to distinguish protons and electrons under different electron acception efficiencies.
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16811
Appears in Collections:暗物质和空间天文实验室_期刊论文

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