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Inboard and outboard electron temperature profile measurements in JET using ECE diagnostics

L Barrera, E de la Luna, L Figini, M N A Beurskens, M Brix, F Castejón, P C de Vries, D Farina, M Kempenaars, P Lomas2010年Plasma Physics and Controlled FusionIF 2.2出版社

In this paper a novel use of the heterodyne radiometer in JET is presented. The operation of the diagnostic has been extended to allow simultaneously measurement of the pedestal temperature profile at the inboard and outboard midplane with high spatial and temporal resolution. Access to the inboard midplane region is obtained by measuring ordinary mode electron cyclotron emission (ECE) (no harmonic overlap) using an antenna located on the low-field side of the torus. To assess the potential of the ECE temperature measurements in the inboard pedestal region, a detailed analysis of ECE spectrum will be discussed. The measured electron temperature profiles are presented, including a discussion of the main uncertainties in the analysis. The comparison of inboard and outboard temperature pedestal profiles in a variety of H-mode plasmas shows a reasonable agreement in both shape and magnitude.

日本語訳

本論文では、JETにおけるヘテロダイン放射計の新規な利用法を提示する。この診断装置の動作は、高空間分解能および高時間分解能で内側および外側ミッドプレーンにおけるペデスタル温度分布の同時測定を可能にするよう拡張された。内側ミッドプレーン領域へのアクセスは、トーラスの低磁場側に配置されたアンテナを用いて、通常モードの電子サイクロトロン放射(ECE)(高調波重複なし)を測定することにより達成される。内側ペデスタル領域におけるECE温度測定の可能性を評価するため、ECEスペクトルの詳細な解析について議論する。測定された電子温度分布を提示し、解析における主な不確実性についての議論を含める。多様なHモードプラズマにおける内側および外側温度ペデスタル分布の比較は、形状と大きさの両方において合理的な一致を示す。

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JETPlasma diagnosticsElectron cyclotron emission
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