Research and Development of Future Radiation-Resistant Superconducting Magnets With Mineral Insulated REBCO Coils

Research and development of a mineral insulated superconducting magnet based on REBCO coated conductor has been performed at the High Energy Accelerator Research Organization (KEK) to establish technology for a future radiation resistant high field magnet. A goal of the research is an experimental proof of a small-scale demonstration magnet composed of mineral insulated REBCO coils. Application research on ceramic coating technology to REBCO coated conductor is in progress. A short sample study confirms the adaptability of ceramic coating for electrical insulation of REBCO tape. In addition, an electrical insulation film is formed on the surface of a long tape of about 14 m in length by applying the ceramic coating. a first prototype double pancake coil is wound with the ceramic coated REBCO tape with a ceramic adhesive.