基于塑料闪烁体光纤阵列的中子探测系统设计  

Design of Neutron Detection System Based on Plastic Scintillator Fiber Array

作　　者：安恒[1] 薛玉雄[1] 杨生胜[1] 庄凯[2] 秦秀波[2] 王俊[1] 张晨光[1] AN Heng;XUE Yuxiong;YANG Shengsheng;ZHUANG Kai;QIN Xiubo;WANG Jun;ZHANG Chenguang(Lanzhou Institute of Physics,Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou 730000,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]兰州空间技术物理研究所,真空技术与物理重点实验室,甘肃兰州730000 [2]中国科学院高能物理研究所,北京100049

出　　处：《原子能科学技术》2018年第1期133-139,共7页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11305084)

摘　　要：为了能探测高能中子,获得中子能谱信息,设计了一套基于塑料闪烁体光纤和多路复用技术的中子探测系统。利用梯度尺寸结构的阵列化探头感应中子入射的能量和方向。多路复用数据采集及读出单元接收探测器输出信号并产生触发信号,经处理后上传给上位机。数据采集及读出系统通过以太网实现实时通信。上位机程序基于LabWindows/CVI软件平台开发,实现数据读取与保存以及采集系统运行状态参数信息的实时显示。通过中子模拟源进行了现场测试,结果表明,设计的中子探测系统满足设计要求,能实现中子能量与入射方向的测量。In order to detect high energy neutron and obtain neutron energy spectrum information,a set of neutron detection system based on plastic scintillator fiber and multiplexing technology was designed.The gradient arrayed detector was used to sense the energy and direction of the incident neutron.The multiplexing data acquisition and reading unit received the detector output signal and generated a trigger signal,which was processed and then uploaded to the host computer.The data acquisition and readout system realized real-time communication via Ethernet.The host computer program was developed based on the LabWindows/CVI software platform,and it realized the read and save of data and the real-time display of the system running state parameter information.The neutron simulation source was tested on site.The result shows that the neutron detection system meets the design requirement and can realize the measurement of neutron energy and incident direction.

关 键 词：高能中子 塑料闪烁体光纤 能谱 以太网 LABWINDOWS/CVI 

分 类 号：TL99[核科学技术—核技术及应用]