暗物质粒子探测器触发逻辑测试系统的设计和实现∗

摘要

As a part of DAMPE (Dark Matter Particle Explorer), the trigger system is mainly used for triggering the target particles: high-energy electrons and gamma-ray. The trigger system is composed of the trigger detectors (the BGO (Bi2O3-GeO2) calorimeter in DAMPE), which generates the hit signals, and triggers the coincidence logic. This paper describes the design of the test system for the trigger logic of DAMPE, which uses the hit signal generator board to test the trigger logic. Furthermore, we also implement a coincidence system to trigger cosmic ray, which is used to test the trigger efficiency of DAMPE for muon particle.%作为暗物质粒子探测器(DAMPE, Dark Matter Particle Explorer)的一部分,触发系统主要用于判选所需探测的目标粒子(高能电子和伽玛射线)事例,剔除非目标粒子事例。触发系统由触发探测器和触发判选逻辑电路组成。介绍了触发地检测试系统和宇宙线触发系统的设计和功能实现。触发地检系统实现了对触发判选逻辑电路的电子学验证；另外,配合宇宙线触发系统对部分触发逻辑和触发效率进行了测试。主要介绍了触发系统的测试方法和一些初步测试结果。