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Neutronics features of a high power density first wall/blanket with lithium evaporation cooling

M.E. Sawan, S. Malang2001年Fusion Engineering and DesignIF 1.7出版社

AbstractTwo-dimensional neutronics analysis has been performed for the Evaporation of Lithium and Vapor Extraction (EVOLVE) FW/blanket concept. The concept utilizes a refractory alloy (W-5Re) structure. The overall tritium breeding ratio is 1.37 at a lithium enrichment of 40% 6Li. The amount of nuclear heat deposited in the different regions was determined. About 76% of the total thermal energy is carried by the Li vapor to the heat exchanger. Since this heat is extracted at a temperature of 1200°C, a power conversion efficiency >60% can be achieved. No significant poloidal peaking is observed in the nuclear heating and damage profiles. Shielding requirements for the vacuum vessel and magnet are satisfied.

日本語訳

二次元中性子工学解析が、リチウム蒸発・蒸気抽出(EVOLUTION)第一壁/ブランケット概念に対して実施された。本概念は、タングステン‐5レニウム(W-5Re)合金構造を採用している。全体のトリチウム増殖比は、リチウム濃縮度40%(⁶Li)において1.37である。各領域に堆積する核熱量が決定された。全熱エネルギーの約76%がリチウム蒸気によって熱交換器へ輸送される。この熱は1200℃で抽出されるため、60%を超える発電効率が達成可能である。核加熱および損傷プロファイルにおいて、有意なポロイダル方向のピーキングは観察されない。真空容器および磁石に対する遮蔽要件は満たされている。

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