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Comment on 'Comparison of runaway dynamics in LH and ECRH heated discharges in the Frascati Tokamak Upgrade'

Z.Y. Chen, H.J. Ju, B.N. Wan, Y.J. Shi2008年被引用 1Nuclear FusionIF 3出版社

In their paper, the authors used the injected parallel refractive index of lower hybrid waves (LHWs) to evaluate the anomalous Doppler resonant interaction of runaway electrons with LHWs. This led to the conclusion of no wave–particle resonant effect in FTU. This is not true when the upshift effect in the LHW spectrum is considered. The wave–particle resonant energy for the upshifted LHW spectrum is consistent with the measured runaway energy during the lower hybrid current drive phase, while the predicted runaway energy based on the loop voltage is much higher than the measured runaway energy after the injection of LHW power. This indicates that the rapid decrease in runaway energy after the injection of LHW power possibly results from the anomalous Doppler resonant effect.

日本語訳

本論文では、著者らは低混成波(LH波)の注入平行屈折率を用いて、低混成波と逃走電子との異常ドップラー共鳴相互作用を評価した。その結果、FTUにおいて波-粒子共鳴効果は見られないという結論に至った。しかし、LH波スペクトルの上昇効果を考慮すると、この結論は成り立たない。上昇したLH波スペクトルに対する波-粒子共鳴エネルギーは、低混成波電流駆動位相中に測定された逃走エネルギーと一致する一方、ループ電圧に基づいて予測された逃走エネルギーは、LH波注入後の測定された逃走エネルギーよりもはるかに高い。このことは、LH波パワー注入後の逃走エネルギーの急速な減少は、異常ドップラー共鳴効果に起因する可能性が高いことを示している。

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Electron cyclotron heatingLower hybrid
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