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arXiv · 2412.02414

Goupil: A Monte Carlo engine for the backward transport of low-energy gamma-rays

Valentin Niess·Kinson Vernet·Luca Terray
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Abstract

Goupil is a software library designed for the Monte Carlo transport of low-energy gamma-rays, such as those emitted from radioactive isotopes. The library is distributed as a Python module. It implements a dedicated backward sampling algorithm that is highly effective for geometries where the source size largely exceeds the detector size. When used in conjunction with a conventional Monte Carlo engine (i.e., Geant), the response of a scintillation detector to gamma-active radio-isotopes scattered over the environment is accurately simulated (to the nearest percent) while achieving events rates of a few kHz (with a ~2.3 GHz CPU).

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Valentin Niess, Kinson Vernet, Luca Terray. 2025-05-19. Goupil: A Monte Carlo engine for the backward transport of low-energy gamma-rays. https://doi.org/10.1016/j.cpc.2025.109653

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