Nuclear Engineering and Technology (Mar 2022)

A prototype of the SiPM readout scintillator neutron detector for the engineering material diffractometer of CSNS

  • Qian Yu,
  • Bin Tang,
  • Chang Huang,
  • Yadong Wei,
  • Shaojia Chen,
  • Lin Qiu,
  • Xiuku Wang,
  • Hong Xu,
  • Zhijia Sun,
  • Guangyou Wei,
  • Mengjiao Tang

Journal volume & issue
Vol. 54, no. 3
pp. 1030 – 1036

Abstract

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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 200KHz. Such detector prototype could be an elementary unit for applications in the EMD detector arrays.

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