Scarabée : A Free and Open-Source Lattice Physics Code
Hunter Belanger, Parth Singh, Jay Gaiardelli · EPJ Nuclear Sciences & Technologies · 2025
Scarabée is a new free and open source deterministic neutron transport toolkit. It is used as a Python library, giving access to a variety of 1D and 2D transport solvers, as well as 3D diffusion solvers. It also provides a PWR lattice physics calculation scheme, which automates the self-shielding and depletion calculations of standard PWR assemblies, including advanced features to handle Gadolinia depletion. Users can also write their own computational schemes to suit their particular needs. While users can provide cross sections, it can also use a custom HDF5 formatted multi-group nuclear data library, which is designed for self-shielding calculations based on equivalence in dilution. Scarabée is released under the LGPLv3 license, and can be installed via pip on all major operating systems, making it an excellent choice for use in teaching reactor physics.