Comparison Between Anthropomorphic Mathematical Phantoms Using MCNP and FLUKA Codes

Abstract

The International Commission on Radiation Protection (ICRP) recommends dose limits for occupational and public exposures in terms of weighted averages of organ and tissues doses. To this end the ICRP introduced the quantity Effective Dose Equivalent in Publication 26, substituted by Effective Dose in Publication 60. Both quantities cannot be measured and are usually evaluated by means of conversion coefficients, calculated using mathematical models of the adult human, the so-called anthropomorphic phantoms. Some of such phantoms exist for various computer codes, but not yet for FLUKA, a Monte Carlo code which simulates the development of shows initiated by high energy particles of energies up to several tens of TeV. An anthropomorphic phantom for the FLUKA code is presented here, together with preliminary results of calculations of the doses produced by photons in the energy range 0.122-90 MeV in a selection of different organs. The results are compared with those obtained for two phantoms running with MCNP: ADAM from GSF and MCNP version of the FLUKA phantom. In this way, the quality of the FLUKA phantom is tested against the ADAM-GSF phantom and differences of treating physical processes by FLUKA and MCNP are compared.