Experimental Study on the Performance of Tri-GEM Gas Detector

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LAI Yong-Fang, LI Yu-Lan, LI Yuan-Jing, LI Jin, ZHENG Xiao-Cui and CAO Liang-Jun. Experimental Study on the Performance of Tri-GEM Gas Detector[J]. Chinese Physics C, 2006, 30(8): 767-770.
LAI Yong-Fang, LI Yu-Lan, LI Yuan-Jing, LI Jin, ZHENG Xiao-Cui and CAO Liang-Jun. Experimental Study on the Performance of Tri-GEM Gas Detector[J]. Chinese Physics C, 2006, 30(8): 767-770. shu
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Received: 2005-10-21
Revised: 2005-12-06
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Experimental Study on the Performance of Tri-GEM Gas Detector

    Corresponding author: LAI Yong-Fang,
  • Department of Engineering Physics, Tsinghua University, Beijing 100084, China2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3 Institute of Chemical Defense, P.L.A, Beijing 102205, China

Abstract: GEM gas detector is a type of Micro-pattern gas detectors, which has a wide potential in particle physics experiment and lower energy X-ray imaging system. In this paper a tri-GEM gas detector was developed, and the gas gain, energy resolution and charge transfer efficiency of the tri-GEM detector were studied with source of 55Fe. The results of the test indicate that more than 105 effective gain and about 24% energy resolution of 5.9keV X ray of the tri-GEM detector can be reached. The results also show that when the electric field in transfer region is more than 3kV/(cm.atm), the best energy resolution of the tri-GEM detector can be obtained.

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