TOUCANS: A versatile Monte Carlo neutron transport code based on GEANT4

This paper reports the development of TOUCANS, a new Monte Carlo neutron transport code fully written using GEANT4 toolkit. It aims at modeling complex systems easily and rapidly, thanks to simple key–value input file. While its main focus is low energy neutrons – below 20 MeV evaluated cross-section libraries, it also takes advantage state-of-the-art capabilities offered by regarding modeled cross-sections for practically all particles energies. Hence gives access non-specialists wide variety applications involving different particles, such as simulation compact accelerator based sources (CANS) which initially motivated development. leverages on recent implementations performed within provide both shielding calculation (using Adaptive Multilevel Splitting, full y automated variance reduction technique) criticality (to estimate keff multiplicative system). benefits from tight coupling with CADMesh readily import CAD models, NCrystal extend support thermal crystals, FIFRELIN increase compound nucleus de-excitation accuracy, FUNZ user parametric (such multi-objective algorithms Pareto sets). Thanks improvements physics Neutron-HP package, TOUCANS can be considered on-par industrial codes Tripoli-4® or MCNP in term accuracy. Its should released soon amongst advanced examples.