Experimental study of current driven MHD mode in LHD

Y. Narushima, S. Sakakibara, K. Y. Watanabe, S. Ohdachi, S. Inagaki, K. Ida, H. Yamada, K. Narihara, T. Tokuzawa, K. Ichiguchi, T. Yamaguchi, K. Tanaka, Y. Takeiri, W. A. Cooper

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

The current driven MHD mode has been studied in LHD plasmas. When the Ip reaches a certain value, the energy confinement degrades without any noticeable precursor. The electron temperature profile shows a large flat region, which leads to the modification of the profile mainly in the core region. The attainable current becomes lower with increasing beta, which is consistent with the prediction of the MHD stability analysis. However, there are quantitative differences of the attainable current between the experimental results and theoretical predictions. Taking into account the beam pressure, the MHD analysis shows that the m/n=1/1 mode is destabilized and the current driven term is comparable to the pressure one. A similar behaviour of the collapse is also observed in a configuration whose magnetic hill is extremely large. For further research of the current driven mode, it is necessary to produce a higher field plasma to reduce the beam pressure component.

本文言語英語
ホスト出版物のタイトル32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts
ページ1002-1005
ページ数4
出版ステータス出版済み - 2005
外部発表はい
イベント32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets - Tarragona, スペイン
継続期間: 6 27 20057 1 2005

出版物シリーズ

名前32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts
2

その他

その他32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets
国/地域スペイン
CityTarragona
Period6/27/057/1/05

All Science Journal Classification (ASJC) codes

  • 原子分子物理学および光学

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