批量塑闪单元条测试技术的研究

发布时间：2018-04-29 04:27

本文选题：塑料闪烁体 + 衰减长度　；参考：《核技术》2015年08期

【摘要】：寻找暗物质粒子是目前最有影响力的前沿课题之一,广泛受到世界各国重视。我国启动了暗物质粒子探测卫星(Dark Matter Particles Explorer,DAMPE)先导专项,致力研究这一科学问题。暗物质粒子探测卫星有效载荷由塑闪阵列探测器(Plastic Scintillator Detector Array,PSD)、硅阵列探测器、BGO(Bi2O3-Ge O2)量能器以及中子探测器组成,用于探测5 Ge V-10 Te V高能电子、γ及重离子能谱。中国科学院近代物理研究所承担了塑闪阵列探测器的研制工作,塑闪阵列探测器由82根塑闪单元模块采用横竖交叉结构组成,主要协助BGO量能器区分γ事件和电子事件,并作为硅阵列探测器的备份,探测Z=1-20的重离子事件。由于塑闪单元条模块存在较大的差异,所以搭建了一套具有较高测试效率的塑闪单元条批量测试平台,并对塑闪单元条进行宇宙线测试,得到其基本性能参数,如光衰减曲线、光衰减长度、相对光产额、能量分辨率以及探测效率。这为后续筛选出一致性较好并能满足功能需求的82根单元条提供了依据。
[Abstract]:The search for dark matter particles is one of the most influential topics in the world. China has launched the Dark Matter Particles Explorer (DAMPE) pilot project to study this scientific issue. The payload of the dark matter particle detection satellite is composed of a plastic Scintillator Detector array detector, a silicon array detector, a BGOB _ 2O _ 3-Ge O _ 2) calorimeter and a neutron detector, which is used to detect 5Ge V-10Te V high energy electrons, 纬 and heavy ion spectra. The Institute of Modern Physics of the Chinese Academy of Sciences has undertaken the research and development of the plastic flashover array detector, which is composed of 82 plastic flashover unit modules with a vertical cross structure, mainly assisting the BGO calorimeter to distinguish 纬 events from electronic events. As a backup of the silicon array detector, the heavy ion events of ZN 1-20 are detected. Because there is great difference in the module of the plastic flash unit strip, a batch test platform of the plastic flash unit strip with high testing efficiency is built, and the cosmic ray test of the plastic flash unit strip is carried out, and the basic performance parameters, such as the light attenuation curve, are obtained. Optical attenuation length, relative optical yield, energy resolution, and detection efficiency. This provides a basis for the subsequent screening of 82 cell strips that are consistent and can meet the functional requirements.
【作者单位】：中国科学院近代物理研究所;西北师范大学;中国科学院大学;中国科学技术大学;
【基金】：中国科学院战略性先导专项暗物质粒子探测卫星塑闪阵列探测器子课题(No.XDA04040202-3)资助
【分类号】：P145.9

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