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

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...

Full description

Saved in:
Bibliographic Details
Published inChinese physics C Vol. 38; no. 2; pp. 50 - 56
Main Author 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
Format Journal Article
LanguageEnglish
Published 01.02.2014
Subjects
Arrays
Calibration
Charge
China
Detectors
Gain
Gamma ray sources
PMT
Stability
在线
射线源
工程问题
探测器阵列
校准方法
组成部分
香格里拉
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography: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.
GAO Bo,CHEN Ming-Jun,GU Min-Hao,HAO Xin-Jun,LI Hui-Cai,WU Han-Rong,YAO Zhi-Guo,YOU Xiao-Hao,ZHOU Bin（ 1 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, Chin 2 University of Science ＆ Technology of China, Hefei 230026~ China 3 School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031 4 Normal University of Hebei, Shijiazhuang 050016, China）
11-5641/O4
LHAASO-WCDA; water Cherenkov; charge calibration
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/38/2/026003