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Filaments in the edge confinement region of TJ-II

B.Ph. van Milligen, J.H. Nicolau, B. Liu, G. Grenfell, U. Losada, B.A. Carreras, L. García, C. Hidalgo, The TJ-II Team2018年被引用 6Nuclear FusionIF 3出版社

Floating potential measurements from two remote reciprocating probes in the plasma edge region of the TJ-II stellarator are analyzed using the transfer entropy, revealing the spatial dimensions and propagation properties of filamentary structures. The results are corroborated by performing simulations with a resistive MHD model and analyzing data from synthetic diagnostics. The transfer entropy captures the rotation of the filaments and allows the calculating of their rotation velocity. This deduced velocity was compared to the (known) poloidal velocity of the plasma and showed a relatively good agreement.

日本語訳

TJ-IIステラレーターのプラズマ周辺領域における2つの遠隔往復プローブからの浮遊電位測定を転移エントロピーを用いて解析し、フィラメント構造の空間的寸法と伝播特性を明らかにした。その結果は、抵抗性MHDモデルによるシミュレーションと合成診断データの解析によって裏付けられた。転移エントロピーはフィラメントの回転を捉え、その回転速度の計算を可能にする。この推定速度は、プラズマの(既知の)ポロイダル速度と比較され、比較的良好な一致を示した。

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