Performance study of the neutron-TPC

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Meng Huang, Yulan Li, Libo Niu, Zhi Deng, Xiaolei Cheng, Li He, Hongyan Zhang, Jianqiang Fu, Yangyang Yan, Yiming Cai and Yuanjing Li. Performance study of the neutron-TPC[J]. Chinese Physics C, 2017, 41(2): 026001. doi: 10.1088/1674-1137/41/2/026001
Meng Huang, Yulan Li, Libo Niu, Zhi Deng, Xiaolei Cheng, Li He, Hongyan Zhang, Jianqiang Fu, Yangyang Yan, Yiming Cai and Yuanjing Li. Performance study of the neutron-TPC[J]. Chinese Physics C, 2017, 41(2): 026001.  doi: 10.1088/1674-1137/41/2/026001 shu
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Received: 2016-07-27
Revised: 2016-10-08
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    Supported by National Natural Science Foundation of China (11275109)

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Performance study of the neutron-TPC

    Corresponding author: Meng Huang,
    Corresponding author: Yulan Li,
  • 1.  Dept. of Engineering Physics, Tsinghua University, Key Laboratory of Particle &
  • 2.  Nuclear Science and Engineering School, North China Electric Power University, Beijing 102206, China
Fund Project:  Supported by National Natural Science Foundation of China (11275109)

Abstract: Fast neutron spectrometers will play an important role in the future of the nuclear industry and nuclear physics experiments, in tasks such as fast neutron reactor monitoring, thermo-nuclear fusion plasma diagnostics, nuclear reaction cross-section measurement, and special nuclear material detection. Recently, a new fast neutron spectrometer based on a GEM (Gas Electron Multiplier amplification)-TPC (Time Projection Chamber), named the neutron-TPC, has been under development at Tsinghua University. It is designed to have a high energy resolution, high detection efficiency, easy access to the medium material, an outstanding n/γ suppression ratio, and a wide range of applications. This paper presents the design, test, and experimental study of the neutron-TPC. Based on the experimental results, the energy resolution (FWHM) of the neutron-TPC can reach 15.7%, 10.3% and 7.0% with detection efficiency higher than 10-5 for 1.2 MeV, 1.81 MeV and 2.5 MeV neutrons respectively.

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