Speaker
Hiromitsu Takahashi
(Hiroshima University)
Description
SiPMs (MPPCs) have a <1cm small size with a low operation voltage <~50 V, which are suitable for radiation detectors onboard satellites with the limited space and power. However, after the radiation damage of 10 Gy/year caused by cosmic-rays, the SiPM dark current increases several orders of magnitude. In this presentation, we investigated the decrease of the dark current of radiation-damaged SiPM (S13360, Hamamatsu K.K.) at low temperature down to 100K. The SiPM was irradiated by 200 MeV protons with 10 Gy dose. The dark current decreased continuously as the temperature decreased <~1 $\mu$A at the break voltage +3V. The single photo-electron peaks were also visible at the lower temperature.
Author
Hiromitsu Takahashi
(Hiroshima University)
Co-authors
Mr
Daiki Takeoka
(Hiroshima University)
Mr
Masaki Maekawa
(Hiroshima University)
Mr
Misaki Urata
(Hiroshima University)
Mr
Ryota Niwa
(Hiroshima University)
Mr
Teruaki Morishita
(Hiroshima University)
