高温超電導コンパクト核融合マグネット開発の現状と課題

抄録

In magnetic confinement fusion, conventional designs, such as those for ITER, JT-60SA, and LHD, employ Low-Temperature Superconducting (LTS) wires, and the related technology has matured. Among the current fusion reactor designs, especially those conducted by start-up companies, most employ High-Temperature Superconducting (HTS) magnets. Various types of large-current HTS conductors are being developed worldwide, and may be categorized according to their characteristic structures. The background and present status of HTS magnet design and large-current conductor development are reviewed; their prospects and issues are also discussed.