Speaker
Description
remage is a Geant4-based simulation framework developed within the LEGEND collaboration to meet the needs of germanium- and liquid-argon-based low-background experiments, and is used for both the main LEGEND experiment and its associated gamma-ray screening stations. It is designed to remove the usual friction of Monte Carlo work in this field: minimal setup to reach a first working simulation, straightforward geometry registration and benchmarking, easy-to-analyze output, and advanced tools for event vertex confinement and custom vertex input. Built with performance in mind for the very low detection efficiencies typical of background simulations, remage is complemented by Python-based tools for building detector geometries, and scales from simple gamma-counting setups to detailed full-array models. We describe its design, backed by an extensive validation suite and thorough documentation, show example applications to LEGEND physics analyses, and discuss its potential for adoption beyond LEGEND.