Studies of an Event Building algorithm of the readout system for the twin TPCs in HFR

分类： 核科学技术 >> 辐射物理与技术 提交时间： 2024-04-04

Hong-Yun Zhao Zheng-Guo Hu Xi-Meng Chen Jing Tian Zhi-Peng Sun Song-Bo Chang Yi Qian

摘要： The High Energy Fragment Separator (HFRS), which is currently under construction, is a leading international radioactive beam device. Multiple sets of position-sensitive Twin Time Projection Chamber (TPC)detectors are distributed on HFRS for particle identification and beam monitoring. The twin TPCs’ readoutelectronics system operates in a trigger-less mode due to its high counting rate, leading to a challenge of handling large amounts of data. To address this problem, we introduced an event-building algorithm. This algorithmemploys a hierarchical processing strategy to compress data during transmission and aggregation. In addition,it reconstructs twin TPCs’ events online and stores only the reconstructed particle information, which significantly reduces the burden on data transmission and storage resources. Simulation studies demonstrated that thealgorithm accurately matches twin TPCs’ events and reduces more than 98% of the data volume at a countingrate of 500 kHz/channel. 

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