A compact MPPC-based camera for omnidirectional (4 pi) fast-neutron imaging based on double neutron-proton elastic scattering
A compact MPPC-based camera for omnidirectional (4 pi) fast-neutron imaging based on double neutron-proton elastic scattering
复制标题
基于 MPPC 的紧凑型相机，用于基于双中子-质子弹性散射的全向 (4 pi) 快中子成像
DOI：
10.1016/j.nima.2019.162471
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Li Daowu
中科院分区：
文献类型：
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作者：
Pang Xiaoyu;Zhang Zhiming;Zhang Jipeng;Zhou Wei;Zhang Yiwen;Cao Daquan;Shuai Lei;Wang Yingjie;Liu Yantao;Jiang Xiaopan;Liang Xiuzuo;Xiao Xiong;Wei Long;Li Daowu
Neutron localization, which finds (localizes) neutron sources, is a non-destructive method used in the application of nuclear emergency response and special nuclear material (SNM) localization. Fast neutrons from SNM fission can be detected using a hydrogen-rich scintillation detector system with relatively high efficiency. In this study, we proposed a compact multi-pixel photon counter (MPPC)-based neutron scattering camera prototype consisting of sixteen plastic scintillator pillars. This camera is capable of detecting fast neutrons produced by neutron sources in the far-field. It provides a three-dimensional structure to detect incident neutrons with omnidirectional (4 π) field-of-view. Based on double neutron–proton elastic scattering, a reconstructed image can be achieved by using an Am–Be source. Besides, time-of-flight technology was adopted for separating neutron signals from the gamma-ray background radiation. The results of the imaging efficiency and the average imaging resolution are reported in this article. This camera offers good prospects to expand the application field of SNM localization for nuclear security and proliferation deterrence.
