用于同步辐射测量的阻性MicroMEGAS研究

项目名称： 用于同步辐射测量的阻性MicroMEGAS研究

项目编号： No.11275224

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 祁辉荣

作者单位： 中国科学院高能物理研究所

项目金额： 100万元

中文摘要： 近年来MicroMEGAS和GEM成为微结构气体探测器研究领域的研究热点，高能物理研究所跟踪最新研究进展，开展了基于Bulk工艺的MicroMEGAS探测器自主研究工作，成功研制出有效面积80mm×80mm的探测器。本项目在此研究基础之上，采用Bulk制作工艺进行有效面积200mm×200mm的阻性MicroMEGAS探测器国产化研制，利用阻性镀膜和阻性胶膜（高温、常温）工艺，分析探测器在不同工作气体、不同电场、不同计数率下，读出条上电子束团分布、打火率和阻性膜面电阻之间的关系；优化设计阻性结构，抑制打火，提高探测器性能，实现同步辐射计数率>100kHz/cm2和位置分辨率<200μm的探测需求，研制可用于同步辐射10keV能量范围的一维衍射探测器和二维原型探测器。本研究将为阻性MicroMEGAS探测器制作工艺和同步辐射衍射成像应用研究等方面积累丰富的技术经验和提供有力的科学依据。

中文关键词： 气体探测器；微结构探测器；阻性读出；同步辐射；

英文摘要： MicroMEGAS and GEM detectors has recently become the research focus in the new micro-pattern gaseous detector field. Institute of High Energy Physics has kept up with the latest progress of international development and the independent research of Bulk-MicroMEGAS detector has been made. Successfully developed a detector with effective area of 80mm×80mm accumulated a wealth of experience of the detector. The application on this basis, that would make further research on the domestic development of resistive MicroMEGAS detector with active area of 200mm×200mm using Bulk fabrication process. The resistive anode chose the processing technology of resistive coating and the resistive film (under high temperature and room temperature). Measured and analyzed the relationship of the electron bunch distribution in strip, sparking rate and the surface resistance of the resistive film in different conditions of working gas, electric field and counting rate. Optimized the design of the resistive structure to inhibit sparking rate and improve the performance of MicroMEGAS detector. Met the detection demand of synchronous radiation's high counting rate (>100kHz/cm2) and position resolution (<200μm). Finally the one-dimensional diffraction detection and two-dimensional prototype detector developed and should been used for the s

英文关键词： Gaseous detector；Micromegas detector；Resistive readout；Synchrotron radiation；