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Measurements of residual power of EC waves propagating in FTU tokamak during ECRH experiments at 140 GHz

S Nowak, A Airoldi, A Bruschi, S Cirant, C Sozzi2001年Fusion Engineering and DesignIF 1.7出版社

AbstractThe measure of residual power of electron cyclotron (EC) waves propagating in FTU tokamak during ECRH experiments at 140 GHz is provided by three low-gain probes facing the tokamak walls. One probe is located in the same poloidal section of the EC launching system; the other two are toroidally displaced by 60 and 90°, respectively. A model for the estimate of the e.m. power coupled to the probes has been developed. Several discharges with two gyrotrons at 140 GHz, delivering 0.5 MW each for up to 0.5 s, and with different polarizations have been analyzed. Calculations of the power deposition and e.m. residual power are found to be in very good agreement with the experimental measurements.

日本語訳

140 GHzでのECRH実験中にFTUトカマク内を伝播する電子サイクロトロン波(EC波)の残留電力の測定は、トカマク壁に面した3つの低利得プローブによって提供される。1つのプローブはEC発射システムと同じポロイダル断面に配置され、他の2つはそれぞれトロイダル方向に60°および90°変位している。プローブに結合する電磁波(e.m.)電力を推定するためのモデルが開発された。140 GHzで各0.5 MWを最大0.5秒間供給する2つのジャイロトロンを用いた、異なる偏波を持ついくつかの放電が分析された。電力堆積と電磁波残留電力の計算は、実験測定と非常によく一致することが判明した。

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Electron cyclotron heatingFTU
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