Computational Dosimetry
Calculation of dose conversion coefficients with advanced computer codes and voxel phantoms
Geant4 is currently being used as an alternative to MCNPX for particle transport calculations. This code is also being used to calculate dose conversion coefficients for all particles relevant for air crew dosimetry (n, p, electrons, positrons, muons (positive and negative), photons) based on the recent ICRP voxel phantoms (see Fig. 1). Figure 2 shows as an example organ doses (lung, female phantom) for neutrons and anterior-posterior irradiation, as a function of neutron energy as calculated with GEANT4.
- Fig. 1: Reference voxel phantom (courtesy M.Zankl)
- Fig. 2: Organ dose for neutrons, lung, female voxel phantom as calculated with GEANT4.
First results were already presented:
G. Simmer, V. Mares, W. Rühm. New Dose Conversion Coefficients Calculated with GEANT4 for Air Crew Dosimetry. 11th Neutron and Ion Dosimetry Symposium (NEUDOS-11), Oktober 2009, Capetown, South Africa.