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Trigger and noise filtering algorithms for the LHAASO water Cherenkov detector array 被引量：1

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摘要 Introduction The Large High Altitude Air Shower Observatory(LHAASO)will be constructed at Mt.Haizishan,Sichuan Province,China.Among several detector components of the LHAASO,the Water Cherenkov Detector Array(WCDA)is of great importance for gamma-ray astronomy from 100 GeV to 30 TeV.The single-channel counting rate of a photo-multiplier tube can reach as high as 30-35 kHz,most of them are background noise hits from the low energy cosmic ray showers,bringing a big challenge on data transferring,data storage and event reconstruction.Methods In this paper,a dedicated trigger scheme and a fast noise filtering method aiming to deal with these high rate background noise hits are introduced.These methods are tested with some Monte Carlo simulation data,showing a fair efficiency in filtering background noise hits,while most of the real shower signals are kept.Conclusion This method is proposed to be applied in a stage of the online processing just after the data are acquired in LHAASO-WCDA.
作者 Xiao-Jie Wang Zhi-Guo Yao Min Zha Ming-Jun Chen Bo Gao De-Zhi Huang Hui-Cai Li Jin-Yan Liu Wen-Ying Liao Han-Rong Wu For the LHAASO collaboration
机构地区 Key Laboratory of Particle Astrophysics University of Chinese Academy of Sciences Nankai University 不详
出处 《Radiation Detection Technology and Methods》 2017年第2期37-50,共14页 辐射探测技术与方法（英文）
基金 This work is supported in China by NSFC(No.11675187,No.11375224,No.11635011) the Key Laboratory of Particle Astrophysics,Chinese Academy of Sciences.
关键词 LHAASO-WCDA High level soft trigger Background noise filtering
分类号 F42 [经济管理—产业经济]
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