The Application of 20 inch PMT in LHASSO-WCDA

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
'In the Large High Altitude Air Shower Observatory (LHAASO), the main physics objective of the Water Cherenkov detector array (WCDA) is able to survey the gamma-ray sky continuously in the energy range from 100 GeV to PeV. The water Cherenkov detector array, covering an area of about 78,000 m2 area, is constituted by 3120 detector units divided into 3 separate ponds. Each unit of the first 150x150 m2 pond are placed 8 inch PMT while the second and third pond are placed 20 inch PMTs. The newly developed 20 inch PMT uses microchannel-plate (MCP) instead of the traditional dynodes enables better energy resolution, good detector response etc. Here plans to give you a full view about the test result of 20 inch MCP-PMT before and after water proof potting with electronics, including TTS, peak-to-valley ratio, and the geomagnetic effect on PMT.'

Authors: Xiaohao You | Bo Gao | Mingjun Chen
Collaboration: Lhaaso

Indico-ID: 167
Proceeding URL: https://pos.sissa.it/395/696