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Emulator-based Bayesian inference on non-proportional scintillation models by compton-edge probing.
David Breitenmoser1,2, Francesco Cerutti3, Gernot Butterweck4
1Department of Radiation Safety and Security, Paul Scherrer Institute (PSI), Forschungsstrasse 111, Villigen PSI, 5232, Switzerland. david.breitenmoser@psi.ch.
This study introduces Compton edge probing for non-proportional scintillation model (NPSM) inference in inorganic scintillators. The method accurately quantifies intrinsic resolution without electron response measurements, simplifying scintillator detector response modeling.
Area of Science:
- Physics
- Materials Science
Background:
- Scintillator detector response modeling is crucial for fields like particle physics and astronomy.
- Accurate model inference and calibration are challenging due to system complexity and electron response measurement requirements.
Purpose of the Study:
- To propose Compton edge probing for non-proportional scintillation model (NPSM) inference in inorganic scintillators.
- To simplify NPSM inference and intrinsic resolution quantification.
Main Methods:
- Utilized laboratory gamma-ray radiation measurements with a NaI(Tl) scintillator.
- Performed Bayesian inference on a NPSM.
- Applied machine learning to emulate detector response from Monte Carlo simulations.
Main Results:
- Successfully constrained the NPSM, quantifying intrinsic resolution.
- Predicted spectral Compton edge dynamics using trained emulators.
- Demonstrated a method for NPSM inference without electron response measurements.
Conclusions:
- The Compton edge probing framework offers a simplified approach to NPSM inference for inorganic scintillators.
- This methodology enhances scintillator detector response modeling capabilities.
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