THGEM位置灵敏探测器读出系统  

Readout system of THGEM position-sensitive detector

作　　者：赵亚飞[1] 华仁军[1] 冀伟田[1] 陈子瑜[1] 沈激[1] 

机构地区：[1]中国科学技术大学物理学院近代物理系,安徽合肥230026

出　　处：《中国科学技术大学学报》2017年第6期474-478,共5页JUSTC

基　　金：国家自然科学基金(10775129)资助

摘　　要：采用专用集成芯片设计了基于厚气体电子倍增器THGEM的热中子位置灵敏探测器读出电子学系统,实现电荷信号的放大、整形,采用高速模数转换芯片AD9220进行采集,采用USB通信实现数据传输,采用FPGA作为读出系统的总控制器,实现了探测器的阵列电荷信号读出;得到读出系统通道输入输出线性响应关系,在±15fc之间线性关系良好;实现了位置信息重心读出;探测器最高计数率达1×10~5/s.Based on THGEM thermal neutron position sensitive detector,a readout electronics system was designed with a specific integrated chip VA64TA2 to realize charge integration,amplification and conversion.Using high-speed analog-to-digital conversion chip AD9220 to realize data sampling,USB communication to realize data transmission,and FPGA as the main controller,the system was constructed.The array charge signal readout of the detector was realized.The channel input-output linear responses of the system are good,between ±15fc.The centre-of-gravity read-out of position information was realized.The maximum counting rate of the detector could reach 1×10^5/s.

关 键 词：气体电子倍增器 厚气体电子倍增器 中子 探测 重心读出 

分 类 号：TP335.1[自动化与计算机技术—计算机系统结构]