radiation dosimetry model Geant4-DNA https://doi.org/10.1002/mp.13048 Paul Schofield http://geant4-dna.org Geant4-DNA is an extension of the Geant4 Monte Carlo simulation toolkit dedicated to modelling radiation interactions at the DNA and cellular scale, simulating the physical, physico-chemical and chemical stages of radiation-induced damage in liquid water as a biological surrogate. It is open source and steered by an international committee, enabling simulation of direct and indirect DNA strand breaks, base damage and their dependence on radiation quality (LET). The code is widely used in radiation biology, hadrontherapy research and space dosimetry. Located at CNRS.