There is a movement towards international standardization of particle accelerator systems, mainly led by China, and Sumitomo Heavy Industries has been participating in standardization of cyclotron system. So far, the IEC standard (IEC 63175:2021) for 10–30 MeV high-intensity H− cyclotrons has been completed, and IEC/TC45/WG20 is currently discussing the draft standard (IEC 63507/CD) for 200–400 MeV superconducting proton cyclotrons. The same WG20 has also begun discussion on draft standard (IEC 63589-1/CD) for electron linear accelerators for radiation processing. We report on the ongoing status of particle accelerator system standardization process at IEC/TC45/WG20.
