Review of the Radiation Environment in the Inner Detector

The radiation environment in the inner detector has been simulated using the particle transport program FLUKA with a recent description of the ATLAS experiment. Given in this note are particle fluences and doses at positions relevant to the PIXEL, SCT and TRT detectors. In addition, studies are reported on in which 1) information concerning the optimisation of the inner detector neutron-moderators is obtained and 2) the impact of including additional vacuum-equipment is assessed.