【作者】 唐彬； 孙志嘉； 许虹； 滕海云； 李杨国骥； 陈少佳； 王修库； 赵豫斌； 章红宇； 杨振； 陈元柏； 吴冲；

【Author】 TANG Bin;SUN Zhi-jia;XU Hong;TENG Hai-yun;LIYANG Guo-ji;CHEN Shao-jia;WANG Xiu-ku;ZHAO Yu-bin;ZHANG Hong-yu;YANG Zhen;CHEN Yuan-bo;WU Chong;China Spallation Neutron Source(CSNS),Institute of High Energy Physics(IHEP),Chinese Academy of Sciences(CAS);Dongguan Institute of Neutron Science(DINS);China University of Petroleum;

【机构】 中国科学院高能物理研究所东莞分部； 东莞中子科学中心； 中国石油大学；

【摘要】 随着³He气体资源短缺、价格飞涨,基于³He气体的中子探测器已经无法满足急剧增长的中子探测需求。基于⁶LiF/ZnS（Ag）闪烁体和波移光纤结构的大面积位敏中子探测器,具有高的中子探测效率、高位置分辨率和可大面积拼接等优点,可以很好的满足中国散裂中子源（CSNS）上通用粉末衍射仪对中子探测的需求。本文系统研究了双层夹心结构闪烁体中子探测器的各个关键器件性能,设计制作了面积250 mm²×500 mm²的闪烁体中子探测器样机,并利用²⁵²Cf中子源对探测器开展初步性能研究。更多还原

【Abstract】 Due to the shortage and the rapidly increasing price of the ³He gas,seeking new types of position-sensitive neutron detectors is urgent.The investigation of a large area two dimensional position sensitive scintillator neutron detector is developed to fulfill the requirements of the General Purpose Power Diffractometer（GPPD） at the Chinese Spallation Neutron Source（CSNS）.It consists of two layers of ⁶LiF/ZnS（Ag） scintillators,two layers of crossed WLSF arrays,several multi-anode photo multiplier tubes（MA-PMT）,and the ASIC readout electronics.A detector prototype with 250×500 mm² incident area has been constructed,and the characteristics of the key components are studied.The detector has been tested by a ²⁵²Cf isotope neutron source.And the results show That the detector has a good two dimensional imaging ability.更多还原