Radiation damage on SiPMs for space applications

Silicon Photomultipliers (SiPMs) are very sensitive photo-detectors that experienced a big development in the last years several applications, like LIDAR, astrophysics, medical imaging and high energy physics (HEP) experiments. In HEP experiments, particular, they often exposed to significant radiation doses. The main purpose of this manuscript is characterization FBK SiPM technologies when 74 MeV protons with total fluence comparable one would experience space along circular Polar, Low Earth Orbits (LEO) during five mission. work, we estimated expected proton fluences selected orbit, by means SPENVIS software. Several steps were chosen consider dense intervals have more accurate sight on whole damage process. We maximum achieved tests 6.4×1011 neq/cm2. Based such simulations, irradiated technologies. developed custom experimental setup, which was used perform online reverse voltage–current, right after each irradiation step, minimize effect annealing measurement. results then displayed, particular currents, noise Photon Detection Efficiency. Also 30-days study devices performed. Lastly, conclusions drawn basis Signal-to-Noise Ratio (SNR), taking into account standard parameters famous satellites using similar orbits as ones considered work.