²³³U Production Rate Measurement in a Thorium Oxide Assembly at the LOTUS Facility

Results of ²³³U production rate measurements conducted in a vertical assembly of thorium oxide rods irradiated by high-intensity 14-MeV neutrons generator of the LOTUS facility are presented. The amount of ²³³U produced is determined by measuring the yield of ²³³Pa. Moreover, a method is presented to estimate the global ²³³U production in the blanket module from a limited number of point reaction rates measured throughout the module. The experimental data are compared with the results of preliminary two-dimensional calculations.