Radiation transport and nuclear induced heating analysis for ITER baseline design

This paper presents the methodology calculation and the results of heat deposition due to the neutron and gamma interactions with the materials of different ITER zones. One dimensional discrete ordinate technique is used to perform the coupled 174-n and 38-γ transport analysis to produce the neutron and gamma flux distributions. The heat deposition is then calculated by means of the KERMA (Kinetic Energy Release in MAterials) factors and the neutron and gamma nux distribution of the related regions. The radiation transport assessment is based on the new VITAMIN-ENEA libraries derived from ENDF/B-V, FENDL and EFF-2 nuclear data. The kerma factor libraries have been obtained by processing basic nuclear data from EFF-2.4. The assessment is focused on the heat deposited in cryostat regions, because it is responsible for ozone formation from the possible oxygen sources that could be present into those regions