Comparison of spallation and fusion neutron sources in fuel transmutation and regeneration

Abstract In this work, a comparison between the capabilities of a spallation source and a fusion source in the burnup of reprocessed fuels and in the regeneration of thorium was carried out. We have performed Monte Carlo simulations of a sub-critical core loaded with thorium and reprocessed fuel under irradiation of two different neutron sources. Two different fuels reprocessed by the GANEX technique were evaluated, one spiked with depleted uranium and the other one spiked with thorium. The aim is to investigate the neutronic behavior of thorium and reprocessed fuels under different neutron sources and analyze the fuel evolution during 10 years of burnup.