Design of Readout Electronics System for Prototype LAr-based Direct Dark Matter Detector |
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Authors: | ZHU Xing SHEN Zhongtao ZHAO Keqing XIONG Weixing YU Hanlin FENG Changqing LIU Shubin AN Qi |
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Affiliation: | State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China;Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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Abstract: | The prototype readout electronics system of direct dark matter detection experiments, which is mainly based on high speed and high precision waveform sampling and high speed data transfer techniques, consists of multiple waveform digitization modules (WDMs) and one global trigger module (GTM). The WDM exploits high speed analog-to-digital converter to acquire signals from the photomultiplier tubes (PMTs). The GTM collects hit information from WDMs, generates system trigger signal and fans out synchronous clock to all WDMs via backplane buses. Based on offline pulse shape discrimination method, the nuclear recoil events from a PuC neutron source can be clearly distinguished from gamma events within the energy range of 80 pe (photoelectron) to 240 pe for gamma rays, which indicates the capability of fulfilling the requirements of LAr-based direct dark matter detection experiments in future. |
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Keywords: | readout electronics data acquisition LAr dark matter |
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