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arXiv · 2009.12742

Qualification tests of 997 8-inch photomultiplier tubes for the water Cherenkov detector array of the LHAASO experiment

Kun Jiang·Zebo Tang·Xin Li·Zehua Cao·Cheng Li·Yang Li·Ziwei Li·Ziyang Li·Zheng Liang·Pengzhong Lu·Kaifeng Shen·Kaiyang Wang·Yan Wang·Xin Wu
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Abstract

The Large High-Altitude Air Shower Observatory (LHAASO) is being built at Haizi Mountain, Sichuan province of China at an altitude of 4410 meters. One of its main goals is to survey the northern sky for very-high-energy gamma ray sources via its ground-based water Cherenkov detector array (WCDA). 900 8-inch photomultiplier tubes (PMTs) CR365-02-1 from Beijing Hamamatsu Photon Techniques INC. (BHP) are installed in the WCDA, collecting Cherenkov photons produced by air shower particles crossing water. The design of the PMT base with a high dynamic range for CR365-02-1, the PMT batch test system, and the test results of 997 PMTs are presented in this paper.

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Kun Jiang, Zebo Tang, Xin Li, Zehua Cao, Cheng Li, Yang Li, Ziwei Li, Ziyang Li, Zheng Liang, Pengzhong Lu, Kaifeng Shen, Kaiyang Wang, Yan Wang, Xin Wu. 2020-09-27. Qualification tests of 997 8-inch photomultiplier tubes for the water Cherenkov detector array of the LHAASO experiment. https://doi.org/10.1016/j.nima.2021.165108

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