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Experimental study of a THGEM detector with mini-rims

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【作者】 章爱武； 俞伯祥； 谢宇广； 刘宏邦； 安正华； 王志刚； 蔡啸； 孙希磊； 石峰； 方建； 薛镇； 吕绮雯； 孙丽君； 葛永帅； 刘颖彪； 胡涛； 周莉； 吕军光；

【Author】 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

【机构】 Institute of High Energy Physics, Chinese Academy of Sciences； Graduate University of Chinese Academy of Sciences； Shanxi University；

【摘要】 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.

【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.

【关键词】 THGEM； gas gain； energy resolution； mini-rim；
【Key words】 THGEM； gas gain； energy resolution； mini-rim；
【基金】 Supported by Youth Fund of Institute of High Energy Physics;Chinese Academy of Sciences and National Natural Science Foundation of China (10775151)
  • 【文献出处】 中国物理C ,Chinese Physics C , 编辑部邮箱 ,2012年02期
  • 【分类号】O572.212
  • 【被引频次】6
  • 【下载频次】64
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