n/γ discrimination of SiPM array-based CLYC detector

Chenger Wang,Xilei Sun,Jinqiu Yu,Junguang Lv,Yong Deng, Junjie Li,Huan Jiang,Liang Luo,Xiaoxue Fan,Fengbo Gu,Xiaohui Qi

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2022）

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摘要

Cs2LiYCl6:Ce3+ (CLYC) is one of the most ideal scintillators for n/γ detection. Compact CLYC detectors with SiPM array readout have wide-spreading interests recently. In this study, we evaluated the pulse shape discrimination (PSD) of a 2-inch CLYC crystal coupled with SiPM array and digitized by a dedicated PSD circuit board. Energy resolution and figure of merit (FOM) were obtained and compared in different detector configurations also with PMT and commercial waveform digitizing circuit. The results show that the SiPM array-based CLYC detector combined with the dedicated PSD circuit has a good performance of n/γ discrimination.

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关键词

CLYC crystal,SiPM array,Pulse-shape discrimination,Waveform digitization

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