AbstractThis paper presents the results of calculations of fast neutron flux and displacement damage expressed as displacements per atom (dpa) number in stainless steel components of homogeneous steel-water shields. The changes of relations between the fast neutron flux and dpa number, which is a spectrum dependent parameter that amongst others serves as a design criterion of a fusion reactor project, versus the distance from the first wall are obtained for different water fractions in steel-water shields. A simplified analytical method to estimate the displacement damage in metal components of a fusion reactor is proposed. This method is expected to be used for simple and quick estimation of the displacement damage in metal components of a fusion reactor, for example the copper stabilizer of toroidal field coils and construction steel components of first walls, blankets etc.
Impact of fusion reactor neutronics modeling for transmutation and thermal feedback