SiPM proton irradiation for application in cosmic space
Abstract
This paper presents the results of the proton irradiation of silicon photomulipliers (SiPMs) by mono-energetic 170 MeV protons with fluence up to 4.6×109 particles/cm2. In our work, three types of silicon photodetectors from Hamamatsu with areas 3×3 mm2 and different subpixel sizes of 25×25 μm2, 50×50 μm2, and 75×75 μm2 were used. The changes in the SiPM dark count rate (DCR) spectrum before and after irradiation in temperatures in the range of 20oC to -65oC are presented. The influence of the DCR changes on the energy resolution of the 662 keV gamma line from the 137Cs for a non-irradiated GAGG:Ce (1%) scintillator is investigated. The time period of usability of the SiPM detector irradiated by protons in cosmic space was estimated.
- Publication:
-
Journal of Instrumentation
- Pub Date:
- March 2020
- DOI:
- 10.1088/1748-0221/15/03/P03002
- arXiv:
- arXiv:2003.09731
- Bibcode:
- 2020JInst..15P3002M
- Keywords:
-
- Physics - Instrumentation and Detectors;
- High Energy Physics - Experiment
- E-Print:
- 2020 JINST 15 P03002