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Edge and SOL turbulence and blob variations over a large database in NSTX

S.J. Zweben, W.M. Davis, S.M. Kaye, J.R. Myra, R.E. Bell, B.P. LeBlanc, R.J. Maqueda, T. Munsat, S.A. Sabbagh, Y. Sechrest2015年被引用 57Nuclear FusionIF 3出版社

This paper describes the range of variations in edge and SOL turbulence observed using a gas puff imaging (GPI) diagnostic in NSTX discharges. The database consists of 140 shots including Ohmic, L-mode, and H-mode plasmas measured during steady-state conditions (e.g. without ELMs). Turbulence quantities were evaluated using both cross-correlation analysis and blob tracking. Relative fluctuation levels varied from –1.0, correlation times were –40 μs, correlation lengths were –10 cm, and turbulence velocities were km s−1 and km s−1 outwards. These variations were evaluated with respect to both the global and local edge plasma parameters, and compared with simplified theoretical models.

日本語訳

本論文は、NSTX放電においてガスパフイメージング(GPI)診断を用いて観測された周辺およびSOL乱流の変動範囲について述べる。データベースは、定常状態条件(例えばELMのない状態)で測定されたオーミック、Lモード、およびHモードプラズマを含む140ショットからなる。乱流量は、相互相関解析とブロブ追跡の両方を用いて評価された。相対変動レベルは –1.0 から変化し、相関時間は –40 μs、相関長は –10 cm、乱流速度は外向きに km s−1 および km s−1 であった。これらの変動は、グローバルおよび局所的な周辺プラズマパラメータの両方に関して評価され、簡略化された理論モデルと比較された。

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