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Electron cyclotron emission measurements in JT-60U

N Isei, A Isayama, S Ishida, M Sato, N Iwama2001年Fusion Engineering and DesignIF 1.7出版社

AbstractAn electron cyclotron emission (ECE) measurement system has been developed to obtain electron temperature with high time and spatial resolution for JT-60U plasmas. The system consists of three different diagnostic systems. These systems have different advantages and have been used complementarily. Several kinds of calibration are periodically carried out in the systems to secure reliable measurements. In order to reduce the transmission loss, a corrugated waveguide transmission line was installed and the reduction of the loss of ca. 3 dB was attained. As preliminary applications toward the operation of future fusion reactors, the feedback control of electron temperature profile and the automatic determination of the sawtooth inversion radius with an adaptive neural network were successfully demonstrated.

日本語訳

電子サイクロトロン放射(ECE)計測システムは、JT-60Uプラズマの高時間分解能・高空間分解能の電子温度測定を目的として開発された。本システムは、3つの異なる診断システムから構成される。これらのシステムはそれぞれ異なる利点を有し、相補的に使用されてきた。信頼性の高い測定を確保するため、システムでは数種類の較正が定期的に実施されている。伝送損失を低減するため、コルゲート導波管伝送路が設置され、約3dBの損失低減が達成された。将来の核融合炉運転に向けた予備的応用として、電子温度分布のフィードバック制御および適応型ニューラルネットワークによる鋸歯状反転半径の自動決定が実証された。

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JT-60UElectron cyclotron emission
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