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Set of benchmark experiments on slit shielding compositions of thermonuclear reactors

M.I Andreev, V.V Afanasiev, A.G Belevitin, A.V Karaulov, V.G Muratov2001年Fusion Engineering and DesignIF 1.7出版社

AbstractThe paper is based on the results of the ISTC project #180 that has recently been completed. The aim of the project was the development of methodical, hardware and design basis to carry out computational and experimental research on non-uniform shieldings of thermonuclear reactors. As a result a set of benchmark experiments were created. On their basis verification of the domestic and foreign computational codes with the nuclear data estimated was realized. For these purposes the iron hollow slits shielding compositions irradiated with 14.8 MeV energy neutrons were studied. The experimental installations allowed research of the shielding compositions with the following characteristics: a solid structure, a structure with one slit of a central symmetry, and the structures with asymmetric slits and with two slits. The thickness of shielding compositions in this research was 500 mm. The results of experiments were compared to the results of calculations by means of the MCNP-4a and PRIZMA computing codes with use of the FENDL-1.1, FENDL-2, JENDL-3.2 and BAS-78 libraries of nuclear data. The results of comparison made it possible to obtain the recommendations for use of these nuclear data.

日本語訳

要約本論文は、最近完了したISTCプロジェクト#180の成果に基づいている。このプロジェクトの目的は、熱核融合炉の非均一遮蔽体に関する計算および実験研究を実施するための方法論的、ハードウェア的、設計的基盤の開発であった。その結果として、一連のベンチマーク実験が作成された。それらに基づいて、核データを用いた国内外の計算コードの検証が実施された。これらの目的のために、14.8 MeVエネルギーの中性子で照射された鉄中空遮蔽体構成が研究された。実験設備により、以下の特性を有する遮蔽体構成の研究が可能となった:固体構造、中心対称性を有する単一スリット構造、ならびに非対称スリットおよび二重スリットを有する構造。本研究における遮蔽体構成の厚さは500 mmであった。実験結果は、FENDL-1.1、FENDL-2、JENDL-3.2およびBAS-78核データライブラリを用いたMCNP-4aおよびPRIZMA計算コードによる計算結果と比較された。比較の結果により、これらの核データの使用に関する推奨事項を得ることが可能となった。

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