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Neutronics experiments for ITER at JAERI/FNS

C. Konno, F. Maekawa, Y. Kasugai, Y. Uno, J. Kaneko, T. Nishitani, M. Wada, Y. Ikeda, H. Takeuchi2001年被引用 7Nuclear FusionIF 3出版社

A series of fusion neutronics experiments has been performed at the Fusion Neutronics Source facility at Japan Atomic Energy Research Institute as ITER EDA R&D tasks to find ways of dealing with various nuclear problems originating from 14 MeV neutrons in ITER. Recently three groups of experiments were carried out: (1) straight duct streaming experiments, (2) decay heat experiments, and (3) development of a fusion power monitor utilizing activation of water. The straight duct streaming experiments suggest that the calculation accuracy for straight duct streaming analyses in ITER nuclear designs is ±40%. The decay heat experiments show that the accuracy of the decay heat calculation is within 10% for copper and type 316 stainless steel, while it is ∼30% for tungsten. It is demonstrated that a fusion power monitor utilizing activation of water is applicable to ITER.

日本語訳

一連の核融合中性子工学実験が、日本原子力研究所の核融合中性子源施設において、ITERにおける14 MeV中性子に起因する様々な核的問題に対処する方法を見出すためのITER EDA R&Dタスクとして実施されてきた。最近、3つの実験グループが実施された:(1) 直管ストリーミング実験、(2) 崩壊熱実験、(3) 水の放射化を利用した核融合出力モニタの開発。直管ストリーミング実験は、ITER核設計における直管ストリーミング解析の計算精度が±40%であることを示唆している。崩壊熱実験は、銅および316型ステンレス鋼については崩壊熱計算の精度が10%以内である一方、タングステンについては約30%であることを示している。水の放射化を利用した核融合出力モニタがITERに適用可能であることが実証された。

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