Studies of an event-building algorithm of the readout system for the twin TPCs in HFRS  

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

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]School of Nuclear Science and Technology,University of Lanzhou,Lanzhou 730000,China [3]School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China [4]Advanced Energy Science and Technology,Guangdong Laboratory,Huizhou 516000,China

出　　处：《Nuclear Science and Techniques》2024年第4期82-95,共14页核技术（英文）

基　　金：partially supported by the Strategic Priority Research Program of Chinese Academy of Science(No.XDB 34030000);the National Natural Science Foundation of China(Nos.11975293 and 12205348)。

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'readout electronics 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 algorithm employs 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 the algorithm accurately matches twin TPCs'events and reduces more than 98%of the data volume at a counting rate of 500 kHz/channel.

关 键 词：High counting rate Twin TPCs Trigger-less Readout electronics Event building Hierarchical data processing 

分 类 号：TL82[核科学技术—核技术及应用]