Conveners
SiPM s
- Merlin Kole (Universite de Geneve (CH))
Radiation damage of J-series SiPMs has been studied in the context of using these photodetectors in future space-borne scintillation detectors. Several SiPM samples were exposed to 101.4 MeV protons, with fluences ranging from 1.0e8 p/cm$^2$ (1 MeV neutron equivalent fluence of 1.3e8 neq/cm$^2$, absorbed dose of 9.8 rad) to 9.3e9 p/cm$^2$ (1.2e10 neq/cm$^2$, 908 rad). An increase in the dark...
We studied 200 MeV proton irradiation effects on Hamamatsu MPPCs (Si-PMs) in the Wakasa-wan Energy Research Center in Japan. Hamamatsu K.K. made test versions of MPPCs (S14420-3050MOD, S14160-3050MOD) and we studied these performances. As a result, dark current and lower energy threshold of modified MPPCs were comparable to the old one, and thus there were no significant improvements observed...
Study of Radiation Damage on FBK SiPMs
S. Merzi$^1$, F. Acerbi$^1$, A.R. Altamura$^1$, B. Di Ruzza$^2$, G. Haefeli$^3$, G. Paternoster$^1$, C. Trippl$^3$, A. Gola$^1$.
$^1$ Fondazione Bruno Kessler (FBK), Sensors and Devices, Via Sommarive 18, 38123 Trento, Italy
$^2$ Trento Institute for Fundamental Physics and Applications (TIFPA-INFN), Via Sommarive 14, 38123 Trento, Italy
$^3$...
Silicon Photomultipliers (SiPMs) are quickly replacing traditional photomultiplier tubes (PMTs) as the readout of choice for gamma-ray scintillation detectors in space. While they offer substantial size, weight and power saving, they have been shown to be susceptible to radiation damage. SiPM models from various manufacturers were irradiated with 64 MeV protons to simulate the radiation...
POLAR-2 is a polarimeter built to investigate the polarization of gamma-ray bursts in a cosmic space. The instrument will be launch in 2024 on board of the China Space Station and is therefore subject to background radiation from cosmic rays and solar flares. Contrary to its predecessor POLAR, where the scintillators were read-out using a multi-anode PMT, the plastic scintillators will be...
We studied annealing characteristic of Hamamatsu MPPCs (Si-PMs) in two ways after 200 MeV proton irradiation. First, we report the annealing characteristic after kept in room temperature during seven months. Second is baking at 150 degrees Celsius during 3 hours. In both cases, the increased dark current is reduced by 1/2-1/3.
The last decade has increasingly seen the use of silicon photomultipliers instead of photodetectors like photomultiplier tubes. This is due to various advantages of the former on the latter like the compactness, lower operating voltage, insensitivity to magnetic fields and mechanical robustness. All these features make silicon photomultipliers ideal for use on space based experiments where the...
