Investigation of GEM-Micromegas detector on X-ray beam of synchrotron radiation

To reduce the discharge of the standard bulk Micromegas and GEM detectors, a GEM-Micromegas detector was developed at the Institute of High Energy Physics. Taking into account the advantages of the two detectors, one GEM foil was set as a preamplifier on the mesh of Micromegas in the structure and t...

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Published inChinese physics C Vol. 38; no. 4; pp. 42 - 45
Main Author 张余炼 祁辉荣 胡碧涛 范胜男 王波 刘梅 张建 刘荣光 常广方 刘鹏 欧阳群 陈元柏 伊福廷
Format Journal Article
LanguageEnglish
Published 01.04.2014
Subjects
Beams (radiation)
Detectors
Discharge
Gain
Synchrotron radiation
Voltage
X-rays
X射线束
前置放大器
北京同步辐射装置
工作气体
工作电压
探测器
能量分辨率
高能物理研究所
Online AccessGet full text
ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/38/4/046001

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Summary:To reduce the discharge of the standard bulk Micromegas and GEM detectors, a GEM-Micromegas detector was developed at the Institute of High Energy Physics. Taking into account the advantages of the two detectors, one GEM foil was set as a preamplifier on the mesh of Micromegas in the structure and the CEM pream- plification decreased the working voltage of Micromegas to significantly reduce the effect of the discharge. At the same gain, the spark probability of the GEM-Micromegas detector can be reduced to a factor 0.01 compared to the standard Micromegas detector, and an even higher gain could be obtained. This paper describes the performance of the X-ray beam detector that was studied at 1W2B Laboratory of Beijing Synchrotron Radiation Facility. Finally, the result of the energy resolution under various X-ray energies was given in different working gases. This indicates that the GEM-Micromegas detector has an energy response capability in an energy range from 6 keV to 20 keV and it could work better than the standard bulk-Micromegas.
Bibliography:11-5641/O4
gaseous detector, energy resolution, synchrotron radiation
To reduce the discharge of the standard bulk Micromegas and GEM detectors, a GEM-Micromegas detector was developed at the Institute of High Energy Physics. Taking into account the advantages of the two detectors, one GEM foil was set as a preamplifier on the mesh of Micromegas in the structure and the CEM pream- plification decreased the working voltage of Micromegas to significantly reduce the effect of the discharge. At the same gain, the spark probability of the GEM-Micromegas detector can be reduced to a factor 0.01 compared to the standard Micromegas detector, and an even higher gain could be obtained. This paper describes the performance of the X-ray beam detector that was studied at 1W2B Laboratory of Beijing Synchrotron Radiation Facility. Finally, the result of the energy resolution under various X-ray energies was given in different working gases. This indicates that the GEM-Micromegas detector has an energy response capability in an energy range from 6 keV to 20 keV and it could work better than the standard bulk-Micromegas.
ZHANG Yu-Lian QI Hui-Rong HU Bi-Tao FAN Sheng-Nan WANG Bo LIU Mei ZHANG Jian LIU Rong-Guang CHANG Guang-Cai LIU Peng OUYANG Qun CHEN Yuan-Bo YI Fu-Ting（1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China 3 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 4 University of Chinese Academy of Sciences, Beijing 100049, China）
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ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/38/4/046001