Neutronic analysis of a magnetic fusion nuclear reactor

In this study, magnetic fusion reactor modeling with spherical geometry has been completed for the first wall load 5 MW/m² and 500 MW fusion power. In the modeled fusion reactor, D-T fuel was used in the plasma region. Within the scope of eight different models, 1DS-ODS steel, SiC in the first wall region and FLiBe, FLiNa, FLiNaK and Li materials were used in the cooling zone of the reactor. In the study, firstly, tritium breeding ratio (TBR), energy multiplication factor (M), heat and electric power values of the reactor were calculated for eight different models, which were formed according to the changing first wall and cooling materials. In the second stage of the study, for each layer of reactor heat energy, in the first wall region gas production and DPA values were calculated. As a result of the study, it was observed that the density of lithium isotopes in the coolant material and produced in the reactor TBR, M and reactor power values were directly proportional. In the first four models of the study, when 1DS-ODS steel was used as the first wall material, gas production and DPA values were found to be much lower than models which contains SiC as a first wall material. The first model, which uses 1DS-ODS steel as the first wall material and FLiBe as the cooling material, is the most suitable model considering all the calculations.