Proton and neutron production from GAMMA-2 spallation source irradiated by relativistic proton beams

摘要

In the frame of international concern about long-lived nuclear waste, the construction of an effective accelerator driven system for the transmutation or incineration of fission products and actinides is a promising task. A spallation source consisting of a Pb target surrounded by paraffin moderator was studied by irradiation with relativistic proton beams. The spatial distribution of secondary proton and slow neutron were determined using the ~(nat)Cd activation technique and their multiplicity was calculated in order to verify the transmutation efficiency of the specific spallation source and to estimate the tolerance limit of source construction materials.