Evaluation of radiation damage induced by a proton beam at the KOMAC facility

Abstract

The 100-MeV proton linacs of the Korea Multi-purpose Accelerator Complex (KOMAC) started machine operation in 2013, and a 20-MeV or a 100-MeV proton beam has been provided to users who want to utilize a proton beam for their research and development at the KOMAC. Under proton beam irradiation, the target material will experience radiation damage induced by the proton beam, and this radiation damage can be evaluated as a function of the displacement per atom (DPA). Therefore, we used the SRIM (stopping and range of ions in matter) to investigate the damage rate induced by a 20-MeV or a 100-MeV proton beam. In this paper, we will introduce the results obtained by using SRIM calculation, for the radiation damage as a function of the proton energy, beam current, target material and target dimension.