LHAASO-WCDA is a large ground-based water Cherenkov detector array planned to be built at Shangri-La, Yunnan Province, China. As a major component of LHAASO project, the main purpose of LHAASO-WCDA is to survey the northern sky for very-high-energy (above 100 GeV) gamma ray sources. To gain full knowledge of water Cherenkov technique and to well investigate engineering issues, a 9-cell detector array has been built at Yang-Ba-Jing site, neighboring to the ARGO-YBJ experiment. With the array, charge calibration methods for low and high ranges of the PMT readout are studied, whose result shows that a very high precision at several percentages can be reached. These calibration methods are proposed to be applied in the future LHAASO-WCDA project.
@article{arxiv.1304.5055,
title = {Online charge calibration of LHAASO-WCDA---a study with the engineering array},
author = {Gao Bo and Chen Ming-Jun and Gu Ming-Hao and Hao Xin-Jun and Li Hui-Cai and Wu Han-Rong and Yao Zhi-Guo and You Xiao-Hao and Zhou Bin},
journal= {arXiv preprint arXiv:1304.5055},
year = {2019}
}