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Research and development program on accelerator driven subcritical system in JAERI

原研における加速器駆動核変換システムの研究開発プログラム

辻本 和文 ; 大井川 宏之 ; 大内 伸夫 ; 菊地 賢司; 倉田 有司; 水本 元治; 佐々 敏信  ; 西原 健司 ; 斎藤 滋  ; 梅野 誠*; 田澤 勇次郎

Tsujimoto, Kazufumi; Oigawa, Hiroyuki; Ouchi, Nobuo; Kikuchi, Kenji; Kurata, Yuji; Mizumoto, Motoharu; Sasa, Toshinobu; Nishihara, Kenji; Saito, Shigeru; Umeno, Makoto*; Tazawa, Yujiro

原研では、マイナーアクチノイド等の放射性廃棄物を核変換することを目指した加速器駆動核変換システム(ADS)の開発を進めている。ADSの工学的成立性検証に必要な知見と要素技術を得ることを目的に、原研では2002年から総合的な研究開発プログラムを実施してきた。2005年までのプログラム第1期では、原研が主導して多くの研究所,大学,企業が参加して、以下に示すADS特有の3つの技術分野にわたって、研究開発を進めてきた。(1)超伝導線形加速器,(2)核破砕ターゲット及び炉心冷却材としての鉛ビスマス共晶合金技術,(3)未臨界炉心の設計と炉物理。本報告では、プログラムの概要及び得られた成果についてまとめる。

The Japan Atomic Energy Research Institute (JAERI) has been proceeding with the research and development (R&D) on accelerator-driven subcritical system (ADS). The ADS proposed by JAERI is a lead-bismuth (Pb-Bi) eutectic cooled fast subcritical core with 800 MWth. To realize such an ADS, some technical issues should be studied, developed and demonstrated. JAERI has started a comprehensive R&D program since the fiscal year of 2002 to acquire knowledge and elemental technology that are necessary for the validation of engineering feasibility of the ADS. The first stage of the program had been continued for three years. The program is conducted by JAERI, and many institutes, universities and private companies were involved. Items of R&D are concentrated on three technical areas peculiar to the ADS: (1) superconducting linear accelerator (SC-LINAC), (2) Pb-Bi eutectic as spallation target and core coolant, and (3) subcritical core design and technology. In the present work, the outline and the results in the first stage of the program are reported.

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