Intrinsic time resolution and efficiency study for simulated scintillators plastics with Geant4

The time resolution (TR) is one of the most important characteristic a detector. particular case scintillator, collection light also important, it depends sensitive area photo-sensor (Scorer). Normally, Scorer Photomultipliers Tubes (PMTs) greater than Silicon (SiPMs). Other differences are voltage operation, their size and cost, in some cases, large PMTs can be difficult to place, if small space required, which case, preferable use SiPMs. value TR geometry thescintillator, number photo-sensors electronic part.In this work, we study mean optical photon arrival distribution (AT) from SiPM 6X6 mm2. We define variation AT as intrinsic (ITR). In Geant4, simulated two different geometries: square hexagonal, for BC-404 plastic scintillator coupled Scorer. sources were Sr90, Co60, Cs137, Na22 μ- 1 GeV. It shown that ITR location Scorer, incident particle its energy. Then, therefore not constant Finally, show relation between deposited energy by incident, related experiment response event detector charge particle, respectively.