Benchmarking of CAD-based SuperMC with ITER benchmark model

Neutronics design and analysis of fusion reactors is significantly complex mainly on geometry and physical process of neutron. The great challenges brought by advanced nuclear energy system promote the development of Super Monte Carlo Calculation Program for Nuclear and Radiation Process (SuperMC). The ITER benchmark model, a verification model created by ITER International Organization, was used for benchmarking the latest SuperMC which can perform CAD-based neutron and photon transport calculation. The calculation results of SuperMC for the first wall, divertor cassettes, inboard toroidal field coils and equatorial port were compared with the results of MCNP and the results were coincident. The intelligence and advantage of SuperMC on automatic conversion from complicated CAD model to full format calculation model, complex source construction and geometry description method was demonstrated. The correctness of neutron and photon transport in energy range corresponding to fusion reactors was also demonstrated.