Benchmarking experiments of displacement cross-sections for high-energy proton irradiation with cryogenic-sample

Iwamoto, Yosuke   

For validation of the radiation damage model in Monte Carlo particle transport codes such as PHITS, presenters are continuing measurements of the defect-induced electrical resistivity increase of cryogenic-samples under high-energy proton irradiation related to the displacement cross section. In this presentation, I will introduce measurements of electrical resistivity of aluminum and copper under 125 and 200 MeV proton irradiation at the FFAG accelerator facility in Kyoto University and the cyclotron facility in the Research Center for Nuclear Physics (RCNP), Osaka University. A comparison of experimental displacement cross sections with calculated results using PHITS indicated that the arc-dpa model with the defect production efficiencies provided a better quantitative description of the displacement cross-section than NRT-dpa, which have been widely used.