基于MCP大面阵X射线探测器共享阳极的研究

宋娟; 赵宝升; 盛立志; 刘哲; 代锦飞; 刘永安; 周雁楠

doi:doi:10.3788/gzxb20144308.0823002

光子学报, 2014, 43 (8): 0823002, 网络出版: 2014-09-01

基于MCP大面阵X射线探测器共享阳极的研究

Research on Shared Anode Used for the Large Area Array MCP Detector

论文大纲

宋娟 ^1,2,*赵宝升 ¹盛立志 ¹刘哲 ¹代锦飞 ^1,2刘永安 ¹周雁楠 ¹

作者单位

¹ 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,西安 710119

² 中国科学院大学,北京 100039

摘要

针对用于大面阵微通道板探测器的电子学采集系统研制难度大的问题,提出了多个探测单元共享一个微带线接收阳极的解决方案.依据微带线原理,设计了阻抗匹配的双通道共享阳极和四通道共享阳极.按照判定多通道共享阳极可用的基本标准,对这两种共享阳极进行了信号传输特性和收集效率的实验验证.模拟实验显示,多通道共享阳极的信号传输呈现出无衰减、无畸变的状态,实验测试结果与模拟计算结果相吻合;双通道共享阳极计数率之和与四通道共享阳极计数率均近似等于单通道阳极计数率之和,相对误差分别为5.2%、7.4%.四通道共享阳极可以取代单通道阳极和双通道共享阳极,将多通道电子学采集系统的通道数目减少至原来的1/4,降低整个电子学采集系统的体积、重量和功耗.

Abstract

The development of signal acquisition system used for the large area array of microchannel plate detector is very difficult. Multi-channel shared anode was put forward to solve this technical issue. Dual-channel shared anode and four-channel shared anode were designed.Acording to the basic standard that multi-channel Shared anode instead of single channel anode, signal transmission characteristics and collection efficiency were tested.Simulation experiment results show that signal transmission in multi-channel shared anode without attenuation and distortion, and the experimental results and simulation results are identical with each other; dual-channel shared anode′s total count rate and four-channel shared anode′s count rate are approximately equal to the sum of single channel anode count rate, the relative error of the count rate are 5.2%、7.4% respectively. Four-channel shared anode can replace single channel anode and dual-channel shared anode,and the number of channels about electronics acquisition system is reduced to 1/4 of the original.So ,the volume, weight and power of the whole acquisition system are reduced effectively.

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宋娟, 赵宝升, 盛立志, 刘哲, 代锦飞, 刘永安, 周雁楠. 基于MCP大面阵X射线探测器共享阳极的研究[J]. 光子学报, 2014, 43(8): 0823002. SONG Juan, ZHAO Bao-sheng, SHENG Li-zhi, LIU Zhe, DAI Jin-fei, LIU Yong-an, ZHOU Yan-nan. Research on Shared Anode Used for the Large Area Array MCP Detector[J]. ACTA PHOTONICA SINICA, 2014, 43(8): 0823002.

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