A novel trigger algorithm for wide-field-of-view imaging atmospheric Cherenkov technique experiments

作     者：Guang-Guang Xin Hao Cai Yi-Qing Guo Tian-Lu Chen Cheng Liu Xiang-Li Qian Guang-Guang Xin;Hao Cai;Yi-Qing Guo;Tian-Lu Chen;Cheng Liu;Xiang-Li Qian

作者机构：School of Physics and TechnologyWuhan UniversityWuhan 430072China Key Laboratory of Particle AstrophysicsInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Ministry of EducationThe Key Laboratory of Cosmic Rays(Tibet University)Lhasa 850000China School of Intelligent EngineeringShandong Management UniversityJinan 250357China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2022年第33卷第3期

页      面：22-28页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the Key R&D Program of Sichuan Province (Nos. 2019ZYZF0001 and 2020YFSY0016) the National Natural Science Foundation of China (Nos. 11873005,12047575, 11705103, 11635011, U1831208, U1632104, 11875264 U2031110) 

主　　题：IACTs Wide field of view(FoV) γ-ray burst Cherenkov radiation 

摘      要：The high-altitude detection of astronomical radiation(HADAR)experiment is a new Cherenkov observation technique with a wide field of view(FoV),aimed at observing the prompt emissions ofγ-ray bursts(GRBs).The bottleneck for this type of experiment can be found in determining how to reject the high rate of nightsky background(NSB)noise from random *** this work,we propose a novel method for rejecting noise,which considers the spatial properties of GRBs and the temporal characteristics of Cherenkov *** space coordinates,the map between the celestial sphere and the fired photomultiplier tubes(PMTs)on the telescope s camera can be expressed as f(δ(i,j))=δ (i ,j ),which means that a limited number of PMTs is selected from one *** the temporal scale,a 20-ns time window was selected based on the knowledge of Cherenkov *** allowed integration of the NSB for a short time ***,the angular resolution and effective area at 100 GeV in the HADAR experiment were obtained as 0.2°and 10^(4)m^(2),*** method can be applied to all wide-FoV experiments.