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Design of superheterodyne radiometer as ECE diagnostic for electron temperature profile measurement in SST-1

H.K.B Pandya, P.K Atrey, J Govindarajan, S.K Mattoo1997年Fusion Engineering and DesignIF 1.7出版社

AbstractThis paper presents the design of an eight-channel W band radiometer as an electron cyclotron resonance (ECE) diagnostic to measure the electron temperature for phase I (Bt0 = 1.5 T) operation of SST-1. A double-sideband (DSB) mixer cum power divider method is used to cover the full range of ECE frequencies. The noise figure, sensitivity and expected output signal of the radiometer are estimated and a calibration technique is discussed. A time resolution of 5 μs and a spatial resolution of 0.6 cm for 2fce = 70 GHz are achieved by this radiometer.

日本語訳

本論文では、SST-1の第I期(Bt0 = 1.5 T)運転における電子温度測定のための電子サイクロトロン共鳴(ECE)診断として、8チャンネルWバンド放射計の設計について述べる。二重側波帯(DSB)ミキサ兼電力分配器方式を用いて、ECE周波数の全範囲をカバーする。放射計の雑音指数、感度、および期待される出力信号を見積もり、較正手法について議論する。本放射計により、2fce = 70 GHzにおいて、時間分解能5 μs、空間分解能0.6 cmが達成される。

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Plasma diagnosticsElectron cyclotron emissionSST-1
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