国立研究開発法人量子科学技術研究開発機構核融合エネルギー研究開発部門那珂核融合研究所先進プラズマ研究部Naka Fusion Institute, National Institutes for Quantum and Radiological Science and Technology ◇ 311–0193 茨城県那珂市向山801–1 ◇ 801–1 Mukouyama, Naka-shi, Ibaraki Pref. 311–0193, Japan
核融合炉研究開発は，要素技術開発の時代を過ぎて，システム統合の時代に入ってきた。日米欧露中韓印の7極の協力の下，核融合プラズマ燃焼と核融合炉工学技術の実証を主目的とする国際熱核融合実験炉ITERの建設が進んでいる。また，このITERに貢献あるいは補完する研究が，日欧の「幅広いアプローチ活動」の下に進み，定常高圧力プラズマ制御の実現を主目的とするJT-60SAや核融合中性子工学研究のためのIFMIF原型加速器の建設が開始された。そして，原型炉開発を担う全日本体制が構築され研究開発が開始された。
Nuclear Fusion is an excellent energy source characterized by high safety and inexhaustible fuel. Now fusion research is coming to the stage of ‘system integration.’ Towards demonstration of the burning plasma and integrated fusion engineering, construction of ITER is underway in St Paul Lez Durance, France. In order to contribute to the success of ITER and complement ITER towards the demonstration reactor (DEMO), Japan and Europe are operating ‘The Broader Approach Activity’ in Japan, in which the JT-60SA tokamak device is under construction in Naka city, Ibaraki prefecture for development of steady-state high pressure plasma operation and the IFMIF prototype accelerator for the fusion neutron engineering is under construction in Rokkasho village in Aomori prefecture. Fostering the next generation is also the important purpose of these activities. “The All Japan Activity” was recently organized for DEMO design and development.
Key words: fusion energy; ITER; the broader approach activity; DEMO reactor
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