基于直流法的三级GEM的性能研究
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- 英文论文题名：The Performance Study of a Triple-GEM with Direct Current Method
- 论文作者：董静 ; 张建 ; 范胜男
- 英文论文作者：DONG Jing ; ZHANG Jian ; FAN Sheng Nan ; Institute of High Energy Physics ; Chinese Academy of Sciences
- 年：2014
- 作者机构：中国科学院高能物理研究所;
- 论文关键词：GEM ; 原初电离 ; 透过率 ; 增益
- 英文论文关键词：Gas Electron Multiplier ; ionization ; transparency ; Gain
- 会议召开时间：2014-08-13
- 会议录名称：第十七届全国核电子学与核探测技术学术年会论文集
- 语种：中文
- 分类号：O572.212
- 学会代码：HDZX
- 会议名称：第十七届全国核电子学与核探测技术学术年会
- 会议地点：中国甘肃兰州
- 主办单位：中国电子学会、中国核学会核电子学与核探测技术分会
- 学会名称：中国电子学会核电子学与核探测技术分会
- 页数：6
- 文件大小：805k
- 原文格式：D
- 会议级别：全国
摘要
基于直流法研究了三级GEM(100×100mm~2)在5种混合气体(Ar:CO_2(70:30)、Ar:ISO(80:20)、Ar:ISO(90:10)、He:ISO(90:10)和He:ISO(95:05))工作下的性能;即:测量了三级GEM的各场区的透过率,得到了优化的各场区的参数;为准确测量气体增益,实验过程中通过选择测量方法,对软X射线在GEM的原初电离的电流进行了精密测量;避免了传统模式,即测量~(55)Fe全能峰,利用一般电离能的特定参数估算原初电离得到增益方法所带来的一些不确定性;得到了一个确定条件下的准确的增益。
We report the results of a systematic study of the performance of a 100×100mm~2 triple-GEM detector operated with 5 gas mixtures(Ar: CO2(70:30)、Ar:ISO(80:20)、Ar:ISO(90:10)、He:ISO(90:10)和 He:ISO(95:05))with direct current methods. The transparency of the triple-GEM was studied respectively and the optimization of the parameters of each field was obtained. In order to precisely measure gas gain of soft X-ray, the ionization measurement was performed and the method for measuring ionization has been carefully taken into account which avoids the uncertainty of the measurement of ~(55)Fe full energy photo-electron peak and estimate ionization based on its specific parameters. The accurate gain of GEM with 5 kinds of working gas has been studied.
We report the results of a systematic study of the performance of a 100×100mm~2 triple-GEM detector operated with 5 gas mixtures(Ar: CO2(70:30)、Ar:ISO(80:20)、Ar:ISO(90:10)、He:ISO(90:10)和 He:ISO(95:05))with direct current methods. The transparency of the triple-GEM was studied respectively and the optimization of the parameters of each field was obtained. In order to precisely measure gas gain of soft X-ray, the ionization measurement was performed and the method for measuring ionization has been carefully taken into account which avoids the uncertainty of the measurement of ~(55)Fe full energy photo-electron peak and estimate ionization based on its specific parameters. The accurate gain of GEM with 5 kinds of working gas has been studied.
引文
[1]Sauli F.GEM:A new concept for electron amplification in gas detectors.Nuclear Instruments&Methods In Physics Research Section A-accelerators Sp.Vol.386(2-3).1997:531-534
[2]董静,谢一冈,陈元柏等。三级GEM的性能及多路成像的实验研究。高能物理与核物理.Vol.31(7).2007:664-668
[3]董静,吕新宇等。基于读出条读出的二维位置灵敏气体电子倍增器的研制。Acta Physica Sinica.9.2010:6029-6035
[2]董静,谢一冈,陈元柏等。三级GEM的性能及多路成像的实验研究。高能物理与核物理.Vol.31(7).2007:664-668
[3]董静,吕新宇等。基于读出条读出的二维位置灵敏气体电子倍增器的研制。Acta Physica Sinica.9.2010:6029-6035