Discriminating cosmic muons and X-rays based on rise time using a GEM detector

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Hui-Yin Wu, Sheng-Ying Zhao, Xiao-Dong Wang, Xian-Ming Zhang, Hui-Rong Qi, Wei Zhang, Ke-Yan Wu, Bi-Tao Hu and Yi Zhang. Discriminating cosmic muons and X-rays based on rise time using a GEM detector[J]. Chinese Physics C, 2016, 40(8): 086001. doi: 10.1088/1674-1137/40/8/086001
Hui-Yin Wu, Sheng-Ying Zhao, Xiao-Dong Wang, Xian-Ming Zhang, Hui-Rong Qi, Wei Zhang, Ke-Yan Wu, Bi-Tao Hu and Yi Zhang. Discriminating cosmic muons and X-rays based on rise time using a GEM detector[J]. Chinese Physics C, 2016, 40(8): 086001.  doi: 10.1088/1674-1137/40/8/086001 shu
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Received: 2015-12-08
Revised: 2016-01-28
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    Supported by National Natural Science Foundation of China (11135002, 11275235, 11405077, 11575073)

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Discriminating cosmic muons and X-rays based on rise time using a GEM detector

    Corresponding author: Yi Zhang,
  • 1.  School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 2.  School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
  • 3.  State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China
Fund Project:  Supported by National Natural Science Foundation of China (11135002, 11275235, 11405077, 11575073)

Abstract: Gas electron multiplier (GEM) detectors have been used in cosmic muon scattering tomography and neutron imaging over the last decade. In this work, a triple GEM device with an effective readout area of 10 cm × 10 cm is developed, and a method of discriminating between cosmic muons and X-rays based on rise time is tested. The energy resolution of the GEM detector is tested by 55Fe ray source to prove the GEM detector has a good performance. Analysis of the complete signal-cycles allows us to get the rise time and pulse heights. The experiment result indicates that cosmic muons and X-rays can be discriminated with an appropriate rise time threshold.

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