As specialists in industrial irradiation processes (gamma, electron beam and low, medium and high energy X-rays) we implement RayXpert not only for radioprotection calculations but also and especially for deposit dose simulations on irradiated products with their real geometrical configuration, notably by importing 3D modeling files derived from Autocad. In addition, for people who like me have never used tools such as Geant 4, EGS or MCNP, RayXpert is a fantastic tool. No need to be a computer scientist to get the best out of this software just to be a physicist to understand the phenomena and the underlying physics