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Negative magnetic shear modes of operation in the Alcator C-Mod tokamak near the beta limit

P T Bonoli, M Porkolab, J J Ramos, W Nevins, C Kessel1997年Plasma Physics and Controlled FusionIF 2.2出版社

The stability properties of non-inductively driven, reversed-shear type current profiles that may be achieved for Alcator C-Mod tokamak-like parameters (aspect ratio R/a = 3) are examined. It is found that without a conducting wall, the best stability results ( up to 3.7) are achieved for highly triangular plasmas at , for relatively broad pressure profiles and large values of . For elliptical or circular cross-sectional plasmas with little triangularity, the stability limits are significantly lower ). Finally, more-peaked pressure profiles have lower beta limits than broader profiles.

日本語訳

非誘導駆動の逆シア型電流分布の安定性特性を、Alcator C-Modトカマク類似パラメータ(アスペクト比R/a = 3)について調べた。導体壁がない場合、最良の安定性結果(ベータ値最大3.7)は、高い三角形度を有するプラズマにおいて、比較的ブロードな圧力分布と大きな値に対して達成されることが見出された。楕円形または円形断面で三角形度が小さいプラズマでは、安定性限界は著しく低くなる。最後に、よりピーク化した圧力分布は、ブロードな分布よりも低いベータ限界を有する。

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alcator-c-mod高精度(タイトル一致)

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AlcatorC-ModMagnetic shear
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