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The effect of thermo-oxidation on plasma performance and in-vessel components in DIII-D

J.W. Davis, S.L. Allen, B.W.N. Fitzpatrick, N.H. Brooks, C.P. Chrobak, R. Ellis, A.A. Haasz, G.L. Jackson, A. Leonard, A.G. McLean2013年被引用 10Nuclear FusionIF 3出版社

In April 2010, two thermo-oxidation experiments ('O-bakes') were performed in the DIII-D tokamak. Internal surfaces of the tokamak, as well as a number of specimens inserted into the torus, were exposed to a mixture of 20% O2/80% He at a nominal pressure of 9.5 Torr (1.27 kPa) at a temperature of 350–360 °C for a duration of 2 h. Three primary conclusions have been drawn from these experiments: (1) laboratory measurements on the release of deuterium from tokamak codeposits by oxidation have been duplicated in a tokamak environment, (2) no internal tokamak components or systems were adversely affected by the oxidation and (3) the recovery of plasma performance following oxidation was similar to that following regular torus openings.

日本語訳

2010年4月、DIII-Dトカマクにおいて2回の熱酸化実験(「O-bake」)が実施された。トカマクの内部表面およびトーラス内に挿入された多数の試料は、20% O2/80% Heの混合ガスに、公称圧力9.5 Torr(1.27 kPa)、温度350~360°Cで2時間曝露された。これらの実験から、以下の3つの主要な結論が得られた:(1)酸化によるトカマク共堆積物からの重水素放出に関する実験室測定結果が、トカマク環境において再現された。(2)酸化処理によって、トカマク内部の構成部品およびシステムに悪影響は及ぼされなかった。(3)酸化処理後のプラズマ性能の回復は、通常のトーラス開放後と同様であった。

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diii-d高精度(タイトル一致)

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DIII-DIn-vessel components
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