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Qian Yu,Bin Tang,Chang Huang,Yadong Wei,Shaojia Chen,Lin Qiu,Xiuku Wang,Hong Xu,Zhijia Sun,Guangyou Wei,Mengjiao Tang 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.3
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 atChina Spallation Neutron Source (CSNS) for the Engineering Material Diffractometer (EMD).A prototypewith a sensitive volume of 180mm 192mm has been built. Signals from SiPMs are processed by the selfdesignApplication Specific Integrated Circuit (ASIC). The performances of this detector prototype are as follows: neutron detection efficiency could reach50.5% 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.