Investigation of background signals caused by cosmic muons in SiPM and light guides

SiPM is often used to detect a small number of photons produced by very weak radiations. A light guide is usually used to connect this detector to the test space or a scintillator. This research investigated the scintillation of glass and PMMA materials in light guide and epoxy resin in the top window structure of SiPM. The amount of this scintillation is relatively determined by simulation and experimentally measured. Cosmic rays and other energetic particles emitting photons in these structures can leave a significant background error in some experiments if a standard scintillator is not used in the detector structure.