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Electron cyclotron emission correlation radiometry in toroidal plasma confinement devices

G Cima, R.V Bravenec, C Watts1997年Fusion Engineering and DesignIF 1.7出版社

AbstractVery low level plasma density and temperature fluctuations can be responsible for anomalous transport in thermonuclear magnetic traps. Electron cyclotron emission (ECE) detection has proven to be a very effective diagnostic for monitoring plasma temperature fluctuations at the frequencies of interest. Diffraction unfortunately limits the space resolution of this diagnostic with potentially important consequences on estimates of turbulent transport. This issue will be investigated both theoretically and with regard to technical implications. Experimental results obtained on the TEXT-U tokamak will be used to illustrate the previous point. Recent results obtained on TEXT-U with ECE, and corroborated by other fluctuation diagnostics, on the anisotropy of the high frequency fluctuations will be presented.

日本語訳

極めて低レベルのプラズマ密度および温度揺動は、熱核融合磁気閉じ込め装置における異常輸送の原因となり得る。電子サイクロトロン放射(ECE)検出は、対象周波数におけるプラズマ温度揺動の監視に極めて有効な診断手法であることが実証されている。しかし、回折によりこの診断法の空間分解能が制限され、乱流輸送の評価に重大な影響を及ぼす可能性がある。この問題について、理論的観点および技術的影響の両面から検討する。TEXT-Uトカマクで得られた実験結果を用いて、前述の点を例証する。さらに、ECEを用いてTEXT-Uで得られた最新の結果と、他の揺動診断法によって裏付けられた高周波揺動の異方性に関する知見を提示する。

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Electron cyclotron emissionPlasma confinement
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