Goupil

(Gamma transpOrt Utility, aPproximate but reversIbLe)

Goupil is a Monte Carlo transport engine designed for low-energy gamma-rays (0.1-3 MeV), typically emitted from radioactive isotopes. By using a backward transport algorithm, and making a few approximations, Goupil can significantly accelerate Monte Carlo simulations, resulting in computation time savings of up to 5 orders of magnitude in the air. For an academic description of Goupil, or for citing Goupil, please refer to [NVT24].

Documentation

• Overview
• Geant4 adapter
• Python interface
• C interface
• Bibliography
• Source code

System of units

Note

Goupil uses the Centimetre-Gram-Second (CGS) system of units (e.g. g/cm³ for a density), except for energies and momenta which are expressed in MeV and MeV/c respectively.