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The accomplishment of the Engineering Design Activities of IFMIF/EVEDA: The European–Japanese project towards a Li(d,xn) fusion relevant neutron source

J. Knaster, A. Ibarra, J. Abal, A. Abou-Sena, F. Arbeiter, F. Arranz, J.M. Arroyo, E. Bargallo, P-Y. Beauvais, D. Bernardi2015年被引用 67Nuclear FusionIF 3出版社

The International Fusion Materials Irradiation Facility (IFMIF), presently in its Engineering Validation and Engineering Design Activities (EVEDA) phase under the frame of the Broader Approach Agreement between Europe and Japan, accomplished in summer 2013, on schedule, its EDA phase with the release of the engineering design report of the IFMIF plant, which is here described. Many improvements of the design from former phases are implemented, particularly a reduction of beam losses and operational costs thanks to the superconducting accelerator concept, the re-location of the quench tank outside the test cell (TC) with a reduction of tritium inventory and a simplification on its replacement in case of failure, the separation of the irradiation modules from the shielding block gaining irradiation flexibility and enhancement of the remote handling equipment reliability and cost reduction, and the water cooling of the liner and biological shielding of the TC, enhancing the efficiency and economy of the related sub-systems. In addition, the maintenance strategy has been modified to allow a shorter yearly stop of the irradiation operations and a more careful management of the irradiated samples. The design of the IFMIF plant is intimately linked with the EVA phase carried out since the entry into force of IFMIF/EVEDA in June 2007. These last activities and their on-going accomplishment have been thoroughly described elsewhere (Knaster J et al [19]), which, combined with the present paper, allows a clear understanding of the maturity of the European–Japanese international efforts. This released IFMIF Intermediate Engineering Design Report (IIEDR), which could be complemented if required concurrently with the outcome of the on-going EVA, will allow decision making on its construction and/or serve as the basis for the definition of the next step, aligned with the evolving needs of our fusion community.

日本語訳

国際核融合材料照射施設(IFMIF)は、欧州と日本の間のブローダー・アプローチ協定の枠組みの下で、現在その工学検証・工学設計活動(EVEDA)段階にあるが、2013年夏に予定通りEDA段階を完了し、IFMIFプラントの工学設計報告書を公開した。本稿ではその設計について述べる。従来の設計段階から多くの改良が実施されており、特に、超伝導加速器コンセプトによるビーム損失と運転コストの低減、試験セル(TC)外部へのクエンチタンクの再配置によるトリチウムインベントリの低減と故障時交換の簡素化、遮蔽ブロックからの照射モジュールの分離による照射柔軟性の向上と遠隔操作機器の信頼性向上およびコスト低減、TCのライナーと生体遮蔽の水冷による関連サブシステムの効率性と経済性の向上が挙げられる。さらに、保守戦略が修正され、年間の照射運転停止期間の短縮と照射試料のより慎重な管理が可能となった。IFMIFプラントの設計は、2007年6月のIFMIF/EVEDA発効以来実施されてきたEVA段階と密接に関連している。これらの活動とその継続的な成果については、別稿(Knaster Jら[19])で詳述されており、本稿と併せて読むことで、欧州と日本の国際的努力の成熟度を明確に理解することができる。本公開されたIFMIF中間工学設計報告書(IIEDR)は、必要に応じて進行中のEVAの成果と並行して補完されるものであり、核融合コミュニティの進化するニーズに沿って、その建設に関する意思決定および/または次段階の定義の基礎となるものである。

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