The data acquisition algorithm designed for the SiPM-based detectors of GECAM satellite

Y. Q. Liu,K. Gong,X. Q. Li,X. Y. Wen, Z. H. An,C. Cai,Z. Chang,G. Chen,C. Chen, Y. Y. Du,M. Gao,R. Gao,D. Y. Guo,J. J. He,D. J. Hou, Y. G. Li,C. Y. Li, G. Li,L. Li, X. F. Li,M. S. Li,X. H. Liang, X. J. Liu,F. J. Lu,H. Lu, B. Meng,W. X. Peng, F. Shi,X. L. Sun,H. Wang,J. Z. Wang,Y. S. Wang,H. Z. Wang,X. Wen, S. Xiao, S. L. Xiong,Y. B. Xu,Y. P. Xu,S. Yang, J. W. Yang,Q. B. Yi,Fan Zhang, D. L. Zhang,S. N. Zhang, C. Y. Zhang, C. M. Zhang,Fei Zhang,X. Y. Zhao,Y. Zhao, X. Zhou

Radiation Detection Technology and Methods（2022）

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摘要

Background The Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM) consists of 2 microsatellites, each of which contains 25 GRD (LaBr3) detectors and 8 CPD (plastic scintillator) detectors. Method silicon photomultiplier (SiPM) array is used to read each detector. The output signal of these detectors with SiPM array is very special and challenging to readout. In this study, a novel data acquisition (DAQ) algorithm for these detectors is designed and implemented, and the content of the output event packet is defined. Result and Conclusion The performances, including the event acquisition efficiency of this DAQ algorithm, are extensively verified through experimental tests. From the on-ground and in-flight tests, this algorithm has excellent performance despite the very limited resources and short development time of GECAM mission.

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关键词

Silicon photomultiplier, Digital waveform processing, Data acquisition

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