Experimental study of a THGEM detector with mini-rims |
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| Institution: | ZHANG Ai-Wu 1;1) YU Bo-Xiang 1;2) XIE Yu-Guang 1 LIU Hong-Bang 2 AN Zheng-Hua 1 WANG Zhi-Gang 1 CAI Xiao 1 SUN Xi-Lei 1 SHI Feng 1 FANG Jian 1 XUE Zhen 1 L Qi-Wen 1,3 SUN Li-Jun 1 GE Yong-Shuai 1 LIU Ying-Biao 1 HU Tao 1 ZHOU Li 1 L Jun-Guang 1 1 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3 Shanxi University, Taiyuan 030006, China |
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| Abstract: | The gas gain and energy resolution of single and double THGEM detectors (5cm × 5cm effective area) with mini-rims (rim less than 10 μm) were studied. The maximum gain was found to reach 5×103 and 2 × 105 for single and double THGEMs respectively, while the energy resolution for 5.9 keV X-rays varied from 18% to 28% for both single and double THGEM detectors of different hole sizes and thicknesses. Different combinations were also investigated of noble gases (argon, neon) mixed with a quantity of other gases (isobutane, methane) at atmospheric pressure. |
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| Keywords: | THGEM gas gain energy resolution mini-rim |
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