摘要
研制出了应用于月基极紫外成像仪的二维极紫外位置灵敏阳极光子计数成像探测器原形样机,该探测器主要由工作在脉冲计数模式下的微通道板堆、楔条形位置灵敏阳极及相关的模拟和数据处理电路组成。设计和制备了周期为1mm,直径为30mm的三电极楔条形位置灵敏阳极,研制了最高计数率为200kHz的前端模拟和数字电路。测量了探测器的暗计数率、脉冲高度分布及空间分辨率等工作特性。测量结果表明,该探测器的空间分辨率为0.28mm,满足月基极紫外成像仪对空间分辨率的要求。
A prototype of two-dimensional photon-counting imaging detector with position-sensitive anode in Extreme Ultraviolet （EUV） region was developed for applying to a moon-based EUV imager. The detector mainly is composed of Microchannel Plate（MCP） stacks operating in pulse-counting mode, wedge-strip position-sensitive anode and correlative analog and data processing circuit. A three electrode wedge-strip position- sensitive anode with 1 mm period and 30 mm-diameter was designed and fabricated, and a front-end analog and digital circuit with maximum rate of 200 kHz also was developed. The operating characteristics of the detector prototype including background rate, pulse height distribution and spatial resolution were measured, the measured results show its spatial resolution is 0. 28 mm, which can satisfy the requirement of moon-based EUV imager on the spatial resolution.
出处
《中国光学与应用光学》
2009年第1期36-40,共5页
Chinese Optics and Applied Optics Abstracts
基金
国家自然科学基金资助项目(No.60677043)
关键词
极紫外探测器
光子计数成像探测器
微通道板
位置灵敏阳极
Extreme Ultraviolet （EUV） detector
photon-counting imaging detector
Microchannel Plate （MCP）
position-sensitive anode
