Pulse-shaping method for real-time neutron/gamma discrimination at low sampling rates

作     者：Jia‑Xin Li Hui‑Liang Hou Yue‑Feng Huang Mao‑Song Cheng Zhi‑Min Dai Jia-Xin Li;Hui-Liang Hou;Yue-Feng Huang;Mao-Song Cheng;Zhi-Min Dai

作者机构：Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2023年第34卷第11期

页      面：51-63页

核心收录：

学科分类：082704[工学-辐射防护及环境保护] 080603[工学-有色金属冶金] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 070203[理学-原子与分子物理] 0827[工学-核科学与技术] 0703[理学-化学] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：This work was supported by the National Natural Science Foundation of China(NSFC)(No.12075308) 

主　　题：FPGA NaI:Tl ^(6)Li Real time Neutron/gamma discrimination Pulse shaping 

摘      要：The Na I:Tl scintillator is an innovative material for dual-gamma-ray and neutron detection with a low ^(6)Li *** achieve real-time n/γ discrimination,a zero-crossing time comparison algorithm based on trapezoidal pulse shaping was *** algorithm can operate efficiently at low sampling rates and was implemented on a single-probe portable digital n/γ discriminator based on a field-programmable gate *** discriminator and Na I:Tl,^(6)Li detector were tested in a neutron-gamma mixed field produced by an ^(241)Am-Be neutron source to evaluate the performance of the *** figure of merits was measured as 2.88 at a sampling rate of 50 MHz,indicating that the discriminator with its embedded algorithm has a promising n/γ discrimination *** discrimination at sampling rates of 40 and 25 MHz demonstrates that the capability of this method is not limited by low sampling rates.