薄型较大面积THGEM气体探测器的研制  

Research of the Thin Large-Area THGEM Gas Detector

作　　者：夏莉[1] 俞伯祥 项昂之[1] 蒋兵 卢小龙[1] 王俊润[1] 胡涛 姚泽恩 

机构地区：[1]兰州大学核科学与技术学院,兰州730000 [2]核探测与核电子学国家重点实验室,北京100049 [3]中国科学院高能物理研究所,北京100049 [4]中国科学院大学,北京100049

出　　处：《核电子学与探测技术》2017年第3期237-241,共5页Nuclear Electronics & Detection Technology

基　　金：国家重点研发计划(2016YFA0400400);国家自然科学基金(11575221)资助

摘　　要：为满足环形正负电子对撞机项目配置的需要,研制了薄型较大面积THGEM气体探测器。该探测器工作时不需要额外的腔室,并且其厚度能达到8 mm,较原来的11 mm有明显减少。其有效面积为20 cm×20 cm,其增益在Ar/iC_4H_(10)(97/3)工作气体中能达到10~4倍,最好能量分辨为30%,增益均匀性能达到88.5%,探测器增益也呈现出较好的长期稳定性。In order to meet the requirements of the project configuration of the Circular Electron Positron Collider（ CEPC）, the thinner THGEM large - area gas detector is developed. This THGEM detector doesn＇t need an extra chamber at work, besides, the total thickness of the thin THGEM detector is 8 mm which is significantly reduced compared with the original 11 mm. Its effective area is 20 cm× 20 cm, its gain in Ar/iC4H10（ 97/3 ）can reach 104 times, the best energy resolution is 30%, the gain uniformity can reach 88.5% ,and its gain also presents a good long term stability.

关 键 词：THGEM 能量分辨率 环形正负电子对撞机 数字强子量能器 

分 类 号：TL81[核科学技术—核技术及应用]