Online charge calibration of LHAASO-WCDA——a study with the engineering array

作     者：高博 陈明君 顾旻皓 郝新军 李会财 吴含荣 姚志国 游晓浩 周斌 

作者机构：Institute of High Energy Physics Chinese Academy of Sciences University of Science & Technology of China School of Physical Science and Technology Southwest Jiaotong University Normal University of Hebei 

基　　金：to X.F.Yuan G.Yang W.Y.Chen and C.Y.Zhao for their essential support in the installation commissioning and maintenance of the engineering array 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2014年第38卷第2期

页      码：50-56页

摘      要：LHAASO-WCDA is a large ground-based water Cherenkov detector array planned to be built at ShangriLa, Yunnan Province, China. As a major component of the LHAASO project, the main purpose of LHAASO-WCDA is to survey the northern sky for very-high-energy（above 100 GeV） gamma ray sources and measure the spectrum. To gain full knowledge of the water Cherenkov technique and to investigate the engineering issues, a 9-cell detector array has been built at the Yang-Ba-Jing site, neighboring the ARGO-YBJ experiment. With the array, charge calibration methods for both low and high ranges of the PMT readout are studied, whose result shows that a precision at several percentages can be reached, which can satisfy the requirement of the detector array. During the long term operation, the charge calibration stability and environmental afection are studied; in this paper, the results are discussed. These calibration methods are proposed to be applied in the future LHAASO-WCDA project.

主 题 词：LHAASO-WCDA water Cherenkov charge calibration 

学科分类：07[理学] 070202[070202] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1088/1674-1137/38/2/026003

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