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Review of radio frequency conditioning discharges with magnetic fields in superconducting fusion reactors

E de la Cal, E Gauthier2005年Plasma Physics and Controlled FusionIF 2.2出版社

Wall conditioning techniques based on radio frequency (RF) discharges in fusion devices with permanent magnetic field were developed a few years ago. The first experiments of RF plasma discharges in the ion cyclotron frequency range called ion cyclotron conditioning were performed in Tore Supra and Textor and later also in HT-7 and W7-AS. A high conditioning efficiency in terms of hydrogen removal and surface cleaning has been demonstrated. The other alternative, RF conditioning discharges in the electron cyclotron range of frequencies and called electron cyclotron conditioning, has also been studied in the recent past. Besides surface hydrogen removal and surface cleaning, RF discharges have also been applied to thin film deposition. We report in this paper the main results obtained with several fusion devices on RF conditioning discharges and present conclusions for future devices such as ITER.

日本語訳

永久磁場を有する核融合装置における高周波(RF)放電に基づく壁調整技術は、数年前に開発された。イオンサイクロトロン周波数帯域におけるRF放電を用いた最初の実験は、イオンサイクロトロン調整(ICWC)と呼ばれ、Tore SupraおよびTextorで実施され、その後HT-7およびW7-ASでも行われた。水素除去および壁洗浄における高い調整効率が実証されている。もう一つの代替手法として、電子サイクロトロン周波数帯域におけるRF調整(ECWC)も近年研究されている。表面からの水素除去および壁洗浄に加え、RF放電は薄膜堆積にも応用されている。本論文では、複数の核融合装置におけるRF調整放電に関する主要な成果を報告し、ITERのような将来の装置に向けた結論を提示する。

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