Irradiation studies of silicon photomultipliers with proton beam from the JULIC cyclotron

Abstract

In this work we study the performance of silicon photomultiplier (SiPM) after exposure to the JULIC cyclotron proton beam of energy ∼39MeV, relative to its performance before exposure. The device showed a significant change in its behavior. A separation of single photon signals is no longer given for the SiPM under study after exposure to a dose of ∼0.2 Gy (corresponding to an integrated proton flux of ∼ϕp=1.06 × 108 p/cm2).