title: Signal pulse emulation for scintillation detectors using Geant4 Monte Carlo with light tracking simulation.
abstract: The anode pulse of a photomultiplier tube (PMT) coupled with a scintillator is used for pulse shape discrimination (PSD) analysis. We have developed a novel emulation technique for the PMT anode pulse based on optical photon transport and a PMT response function. The photon transport was calculated using Geant4 Monte Carlo code and the response function with a BC408 organic scintillator. The obtained percentage RMS value of the difference between the measured and simulated pulse with suitable scintillation properties using GSO:Ce (0.4, 1.0, 1.5 mol%), LaBr3:Ce and BGO scintillators were 2.41%, 2.58%, 2.16%, 2.01%, and 3.32%, respectively. The proposed technique demonstrates high reproducibility of the measured pulse and can be applied to simulation studies of various radiation measurements.
authors.affiliation: Department of Medical Physics and Engineering, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku, Sapporo-shi, Hokkaido, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Ogawara
authors.affiliation: Graduate School of Health Science, Hokkaido University, Kita-12 Nishi-5, Kita-ku, Sapporo-shi, Hokkaido, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ishikawa