Experimental study on the performance of a single-THGEM gas detector

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AN Zheng-Hua, WANG Zhi-Gang, CAI Xiao, DONG Ming-Yi, FANG Jian, HU Tao, NING Fei-Peng, SUN Li-Jun, SUN Xi-Lei, WANG Xiao-Dong, XUE Zhen, YU Bo-Xiang, ZHANG Ai-Wu, ZHOU Li, ZHENG Yang-Heng, Experimental study on the performance of a single-THGEM gas detector[J]. Chinese Physics C, 2010, 34(1): 83-87. doi: 10.1088/1674-1137/34/1/015
AN Zheng-Hua, WANG Zhi-Gang, CAI Xiao, DONG Ming-Yi, FANG Jian, HU Tao, NING Fei-Peng, SUN Li-Jun, SUN Xi-Lei, WANG Xiao-Dong, XUE Zhen, YU Bo-Xiang, ZHANG Ai-Wu, ZHOU Li, ZHENG Yang-Heng, Experimental study on the performance of a single-THGEM gas detector[J]. Chinese Physics C, 2010, 34(1): 83-87.  doi: 10.1088/1674-1137/34/1/015 shu
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Received: 2009-01-19
Revised: 2009-02-10
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Experimental study on the performance of a single-THGEM gas detector

    Corresponding author: WANG Zhi-Gang,

Abstract: A kind of thick GEM-like gaseous electron multiplier (THGEM), which is mechanically an expansion of the GEM with its various dimensions being enlarged, is studied. The leak current of THGEM plates is measured. The effective gain and energy resolution of a single THGEM are studied with a source of 55Fe, and the effective gain of the single THGEM versus the electric field strength in the induction region is investigated. The results show that the leak current of THGEM plates is less than 200 pA. In an atmospheric-pressure standard gas mixture, 8×103 effective gain and about 32% energy resolution can be reached for the single-THGEM detector.

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