Upgrade of Low Flux Proton Irradiation Facility for Radiation Effect Test at KOMAC

Korea Multi-purpose Accelerator Complex (KOMAC) has been operating 20 MeV and 100 MeV proton beam lines to provide proton beams for various applications since 2013. A new beam line with low-flux proton densities was constructed and started beam service to user for simulation of the space radiation-like environment since 2018. The new beam line can provide a very low flux of 10⁵ #/cm2/pulse, good uniformity within ± 10% and a large beam area with a wide range of proton energies. Recently, the irradiation room of the low-flux beam line has been upgraded with new beam diagnostics instruments and new control interface for improving the efficiency of the beam tuning process and for improving beam quality assurance. In this study, the details on the upgrade in the low flux proton irradiation room at KOMAC will be given.