Design and on-orbit status of the trigger system for the DAMPE mission
Design and on-orbit status of the trigger system for the DAMPE mission
复制标题
DAMPE任务触发系统设计及在轨状态
DOI：
10.1088/1674-4527/19/9/123
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发表时间：
2019
影响因子：
1.8
通讯作者：
Yue Chuan
中科院分区：
文献类型：
--
作者：
Zhang Yong Qiang;Guo Jian Hua;Liu Yang;Feng Chang Qing;Zhang Yun Long;Dong Tie Kuang;Zang Jing Jing;Yue Chuan
暗物质粒子探测器（DAMPE）是我国首颗天文卫星，于2015年12月17日在酒泉卫星发射中心成功发射。DAMPE由四个子探测器组成：塑料闪烁体阵列探测器（PSD）、硅钨跟踪转换器（STK）、氧化铋锗（BGO）成像热量计和中子探测器（裸体）。全局硬件触发信号由 BGO 热量计和数据采集系统 (DAQ) 中的触发逻辑板命中产生，负责 DAMPE 的事件选择和 DAQ 同步。在轨上，为了提高探测效率，在不同纬度区域采用不同的触发逻辑进行事件选择。 DAMPE触发系统将平均在轨触发频率压缩至60Hz，将科学数据量减少至每天13GB以下，以满足卫星数据链路的要求。截至目前，整个触发系统运行稳定，保证了DAMPE的良好在轨运行。
DArk Matter Particle Explorer (DAMPE), the first Chinese astronomical satellite, was successfully launched at the Jiuquan Satellite Launch Center on 2015 Dec. 17. DAMPE consists of four subdetectors: Plastic Scintillator array Detector (PSD), Silicon-Tungsten tracKer-converter (STK), Bismuth Germanium Oxide (BGO) imaging calorimeter and NeUtron Detector (NUD). The global hardware trigger signal, which is generated by hits from the BGO calorimeter and the trigger logic board in the data acquisition system (DAQ), is responsible for event selection and DAQ synchronization of DAMPE. On orbit, to improve the detection efficiency, different trigger logics are used for event selection in different regions of latitude. The DAMPE trigger system compresses the average on-orbit trigger rate to 60Hz and reduces science data mass to less than 13GB per day to meet the requirement for the satellite’s data link. The whole trigger system has run stably up to now, ensuring excellent on-orbit operation of DAMPE.