基于光锥的X射线探测器耦合方法  

X-ray Detector Coupling Method Based on Advanced Fiber Optics Taper

作　　者：韩跃平[1,2] 李瑞红[1] 韩焱[1,2] 

机构地区：[1]中北大学电子测试技术国家重点实验室,山西太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《探测与控制学报》2015年第3期15-19,共5页Journal of Detection & Control

基　　金：国家自然科学基金(61171178);山西省自然科学基金(2012011010-3);山西省高等学校2012年度优秀青年学术带头人支持计划资助

摘　　要：针对传统的纤维光锥耦合式X射线探测器存在"多余"的耦合界面层会造成光通量损失,降低探测器的空间分辨率等问题,提出了基于电荷耦合器件(CCD)的光锥直接耦合方法。该方法采用带有高增益微通道板的图像增强器实现前置放大,像增强器通过纤维光锥直接与CCD的光敏面耦合,既作为光学转换器件,也起到放大作用。实验表明:这种耦合方法减少了光损失,空间分辨率提高一倍以上。The traditional fiber optics taper coupling method for X-ray detector had several ＂excess＂ coupling interface layers,which caused the luminous flux losing,lowered the spatial resolution of the X-ray detector.A CCD-based X-rays detector,which utilized a high-gain MCP image intensifier for upfront optical gain was proposed in this paper.This method directly coupled the MCP-based image intensifier with the photosensitive surface of a CCD by a fiber optics taper and that acted as both a converter and an intensifier.Experimental results showed that the detector currently had an intrinsic resolution which was as double as the original.

关 键 词：X射线探测器 纤维光锥 耦合方法 高分辨率 

分 类 号：TL812[核科学技术—核技术及应用] TL814