Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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A prototype of the SiPM readout scintillator neutron detector for the engineering material diffractometer of CSNS

  • Yu, Qian (University of Chinese Academy of Sciences (UCAS)) ;
  • Tang, Bin (Institute of High Energy Physics, Chinese Academy of Sciences(CAS)) ;
  • Huang, Chang (Spallation Neutron Source Science Center (SNSSC)) ;
  • Wei, Yadong (Institute of Science Techology Innovation, Dongguan University of Technology) ;
  • Chen, Shaojia (Institute of High Energy Physics, Chinese Academy of Sciences(CAS)) ;
  • Qiu, Lin (Spallation Neutron Source Science Center (SNSSC)) ;
  • Wang, Xiuku (Institute of High Energy Physics, Chinese Academy of Sciences(CAS)) ;
  • Xu, Hong (Institute of High Energy Physics, Chinese Academy of Sciences(CAS)) ;
  • Sun, Zhijia (Institute of High Energy Physics, Chinese Academy of Sciences(CAS)) ;
  • Wei, Guangyou (Spallation Neutron Source Science Center (SNSSC)) ;
  • Tang, Mengjiao (Spallation Neutron Source Science Center (SNSSC))
  • Received : 2021.04.08
  • Accepted : 2021.09.14
  • Published : 2022.03.25
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Abstract

A high detection efficiency thermal neutron detector based on the 6LiF/ZnS(Ag) scintillation screens, wavelength-shifting fibers (WLSF) and Silicon photomultiplier (SiPM) readout is under development at China Spallation Neutron Source (CSNS) for the Engineering Material Diffractometer (EMD).A prototype with a sensitive volume of 180mm×192mm has been built. Signals from SiPMs are processed by the self-design Application Specific Integrated Circuit (ASIC). The performances of this detector prototype are as follows: neutron detection efficiency could reach 50.5% at 1 Å, position resolution of 3, the dark count rate <0.1Hz, the maximum count rate >200KHz. Such detector prototype could be an elementary unit for applications in the EMD detector arrays.

Keywords

Acknowledgement

This worked was supported by the National Natural Science Foundation of China (No.11875273, U1832111), the Science Foundation of Guangdong (No. 2020B1515120025), the Neutron Physics Laboratory Funding of China Academy of Engineering Physics (Grant No. 2018BCE03), and the State Key Laboratory of particle Detection and Electronics Foundation.

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