Benchmarking of MCAM 4.0 with the ITER 3D model

Monte Carlo particle transport simulations are widely employed in fields such as nuclear engineering, radiotherapy and space science. MCAM (Monte Carlo Automatic Modeling System) is an integrated environment for CAD model preprocessing, accurate bi-directional conversion between CAD/MCNP models, neutronics property processing and geometry modeling developed by FDS Team, China. The ITER (International Thermonuclear Experimental Reactor) benchmark model is set by ITER International Team (IT) to compare the CAD/MCNP programs being developed in the ITER participant teams. The processing procedure of the benchmark model with MCAM will be presented in this paper, which includes the geometric model processing, neutronics property processing, converting to MCNP input file, calculating with MCNP and analysis. The neutron wall loading distribution on the first wall will be given and compared with the one of ITER basic model.