Speaker
Dr
Kun Jiang
(University of Science and Technology of China)
Description
A Large High-Altitude Air Shower Observatory (LHAASO) is building at Haizi mountain, Sichuan, China at an elevation of 4410 m. One of its main goals is to survey the northern sky for very-high-energy (above 100 GeV) gamma ray sources via its ground-based Water Cherenkov Detector Array (WCDA). WCDA is 78000 $m^2$ in dimension and consists of 3120 water detector cells divided into 3 water ponds. A hemispherical 8-inch photomultiplier tube (PMT) CR365 from Beijing Hamamatsu Photon Techniques INC. (BHP) is installed at the bottom-center of each cell of the first water pond to collect the Cherenkov light produced by air shower particles crossing water.
In this presentation, technical design details of WCDA is introduced. The design of a high dynamic range base for CR365 will be presented. The batch test system for PMTs and test results of about 1000 PMTs will also be included.
Primary author
Dr
Kun Jiang
(University of Science and Technology of China)
