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核融合炉の炉内機器の構造を理解する,2; ダイバータの構造を理解する

Comprehending the structure of a vacuum vessel and in-vessel components of fusion machines, 2; Comprehending the divertor structure

鈴木 哲; 秋場 真人; 齊藤 正克*

Suzuki, Satoshi; Akiba, Masato; Saito, Masakatsu*

核融合装置炉内機器の中で最も高い熱負荷を受けるダイバータについて、必要となる機能やその機能を満たすために要求される条件及び構造上の特徴や設計の考え方などを、主として国際熱核融合実験炉ITERを例にとって熱・構造工学的な視点から解説するとともに、核融合原型炉ダイバータへの展望についても述べる。

Among in-vessel components in fusion devices, a divertor is subjected to highest heat flux from plasma. In this paper, from a thermo-mechanical point of view, functional requirements for divertor components, conditions to meet the requirements, structural characteristics and a design concept are discussed by taking the ITER device as an example. A prospect toward the realization of DEMO divertor is also discussed from a viewpoint of its material selection.

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