Experimental Study on the Performance of Tri-GEM Gas Detector

LAI Yong-Fang; LI Yu-Lan; LI Yuan-Jing; LI Jin; ZHENG Xiao-Cui; CAO Liang-Jun

Chinese Physics C> 2006, Vol. 30> Issue(8) : 767-770

Experimental Study on the Performance of Tri-GEM Gas Detector

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

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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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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2005-10-21
Accepted Date: 2005-12-06
Available Online: 2006-08-05

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.