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Heat wave experiments on TJ-II flexible heliac

S Eguilior, F Castejón, E de la Luna, A Cappa, K Likin, A Fernández, TJ-II Team2003年Plasma Physics and Controlled FusionIF 2.2出版社

Heat wave experiments are performed on TJ-II stellarator plasmas to estimate both heat diffusivity and power deposition profiles. High frequency electron cyclotron resonance heating (ECRH) modulation experiments are used to obtain the power deposition profile, which is observed to be wider and duller than that estimated by ray tracing techniques. The causes of this difference are discussed in the paper. Fourier analysis techniques are used to estimate the heat diffusivity in low frequency ECRH modulation experiments. This includes the power deposition profile as a new ingredient. ECRH switch-on/off experiments are exploited to obtain power deposition and heat diffusivities profiles. These quantities are compared with those obtained by modulation experiments and transport analysis, showing good agreement.

日本語訳

TJ-IIステラレータープラズマにおいて熱拡散率とパワー堆積分布の両方を推定するために、熱波実験を実施した。高周波電子サイクロトロン共鳴加熱(ECRH)変調実験を用いてパワー堆積分布を取得し、その分布はレイトレーシング法による推定値よりも広く、鈍い形状であることが観測された。この差異の原因について本論文で考察する。低周波ECRH変調実験では、フーリエ解析手法を用いて熱拡散率を推定した。この解析には、パワー堆積分布を新しい要素として組み込んでいる。ECRHのオン/オフ実験を利用して、パワー堆積分布と熱拡散率のプロファイルを取得した。これらの値は、変調実験および輸送解析から得られた結果と比較され、良好な一致を示した。

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