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加速器駆動核変換技術による廃棄物処分の負担軽減; 核変換専用の核燃料サイクルの技術開発で不透明な将来に備える

Reduction of burden for waste disposal by accelerator-driven transmutation technology; Preparing for unforeseeable future by nuclear fuel cycle for back-end

大井川 宏之 

Oigawa, Hiroyuki

加速器駆動核変換システム(Accelerator-Driven System: ADS)はマイナーアクチノイドの核変換を目的とした革新的な原子力システムである。ADSによる核変換技術と群分離技術を組合せれば、廃棄物処分の負担の大幅な軽減が期待される。核燃料サイクルの将来が見通せない現在の状況では、将来のさまざまな選択肢に柔軟に対応できるADSの開発を進めることが必要である。ADSの開発は、国際協力と異分野との融合で進めるべきであり、J-PARCの第2期の核変換実験施設を中心に世界を牽引することが望まれる。

Accelerator Driven System (ADS) is an innovative nuclear system to transmute minor actinides. By coupling transmutation technology by ADS and partitioning technology, the burden for nuclear waste disposal is expected to be largely reduced. Under the present status where the future of nuclear fuel cycle is unforeseeable, it is desirable to proceed with the research and development of ADS which can flexibly harmonize well with various options in the future. The research and development of ADS should be promoted by international and interdisciplinary collaboration. In this context, Transmutation Experimental Facility under the J-PARC phase-2 project is expected to play an important role to lead worldwide activities to cope with radioactive wastes.

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