Activation of ITER Divertor Neutron Flux Monitor

The paper presents results of numerical modelling for the ITER Divertor Neutron Flux Monitor (DNFM) detector modules life time activation. In particular, the rigorous-2-step (R2S) computational methodology was implemented. In addition to MCNP and FISPACT codes the special integration framework MCKIT was applied. The MCKIT provides models preparation and data processing tools. To provide appropriate performance we replaced direct FISPACT inventory calculations with the superposition method described below. The activation characteristics (DPA, contact dose, etc.) were obtained and compared with our results for the previous DNFM design.