Monte-Carlo calculations of the activation of the accelerator target holder and shadow cone during the calibration of the ITER diagnostic devices with monoenergetic neutrons

► Neutron detectors will be placed inside the ITER to monitor the reactor power. ► These devices will be calibrated at 14 and 2.5 MeV mono-energetic neutron fields. ► Activation is one of major concerns for close access to the beam line elements. ► The dose after various irradiation scenarios were calculated with FLUKA.