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Signal pulse emulation for scintillation detectors using Geant4 Monte Carlo with light tracking simulation.
1Department of Medical Physics and Engineering, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku, Sapporo-shi, Hokkaido, Japan.
The Review of Scientific Instruments
|August 1, 2016
Summary
A new emulation technique accurately simulates photomultiplier tube (PMT) anode pulses for radiation detection. This method enhances pulse shape discrimination (PSD) analysis in various scintillator applications.
Area of Science:
- Nuclear Instrumentation
- Radiation Detection and Measurement
Background:
- Pulse shape discrimination (PSD) is crucial for analyzing signals from scintillators coupled with photomultiplier tubes (PMTs).
- Accurate emulation of PMT anode pulses is essential for reliable simulation studies in radiation detection.
Purpose of the Study:
- To develop a novel emulation technique for photomultiplier tube (PMT) anode pulses.
- To validate the technique using various scintillators and assess its accuracy for pulse shape discrimination (PSD) analysis.
Main Methods:
- Emulation based on optical photon transport simulated with Geant4 Monte Carlo code.
- Incorporation of a PMT response function derived from a BC408 organic scintillator.
- Validation using GSO:Ce, LaBr3:Ce, and BGO scintillators.
Main Results:
- Achieved low percentage RMS errors between measured and simulated pulses (ranging from 2.01% to 3.32%).
- Demonstrated high reproducibility of the measured PMT anode pulse.
- Validated the technique across different scintillator types.
Conclusions:
- The novel emulation technique accurately reproduces PMT anode pulses.
- This method is suitable for simulation studies in diverse radiation measurement scenarios.
- The technique enhances the reliability of pulse shape discrimination (PSD) analysis.
