Online charge calibration of LHAASO-WCDA——a study with the engineering array |
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引用本文: | 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.Online charge calibration of LHAASO-WCDA——a study with the engineering array[J].中国物理C(英文版),2014(2):50-56. |
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作者姓名: | 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 |
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作者单位: | [1]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China [2]University of Science & Technology of China, Hefei 230026, China [3]School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China [4]Normal University of Hebei, Shijiazhuang 050016, China |
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基金项目: | The authors would like to express their gratitude 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 |
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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.
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关 键 词: | 探测器阵列 校准方法 工程问题 在线 香格里拉 组成部分 射线源 PMT |
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