The measurement and evaluation of the SiPM PDE for the LACT camera
Authors:
- Mingjie YangMYMingjie Yang
- Hang ChenHCHang Chen
- Shoushan ZhangSZShoushan Zhang
- Qingxian ZhangQZQingxian Zhang
Open Access
- 25 September 2025
- conference paper
- Published by Sissa Medialab Srl
- Vol. 501, 885
Abstract
The Large Ultra-High Energy Gamma-ray Source Stereoscopic Tracking Device (LACT) project will deploy 32 Cherenkov telescopes with a diameter of 6 meters in Haizishan, Daocheng County, Sichuan Province, to conduct precise structural measurements of more than ten ultra-high energy gamma-ray sources discovered by LHAASO.It is used to conduct precise structural measurements on more than ten ultra-high energy gamma-ray sources discovered by LHAASO.Among them, the photon detection efficiency (PDE) significantly affects the response sensitivity of the SiPM camera to weak Cherenkov light. This report conducted a comparative test of the PDE of SiPM samples from different manufacturers using multi-wavelength LED light sources.Keywords
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