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ECE diagnostics for RTO/RC ITER

G. Vayakis, D.V. Bartlett, A.E. Costley, ITER JCT Home Teams2001年Fusion Engineering and DesignIF 1.7出版社

AbstractThis paper presents the current status of the Electron Cyclotron Emission (ECE) diagnostic on the Reduced Technical Objectives/Reduced Cost International Thermonuclear Experimental Reactor (RTO/RC ITER). It discusses the implications of the new machine design on the measurement requirements, the ability of the diagnostic technique to meet these, and the changes in the implementation imposed by the new layout. Finally, it outlines the physics studies, design and R&D work required prior to the detailed design and construction of the diagnostic. Key results are: (i) that the localisation of the measurement is similar to that in ITER–FDR (40–100 mm in X-mode, 60–200 mm in O-mode for the reference scenario), so that the relative spatial resolution degrades in this, smaller, machine, and (ii) the expected effect of transport barriers on the temperature profile in the high temperature region will be poorly resolved, because the effect of the temperature gradient on the outboard side is to degrade the resolution to (∼250 mm in X-mode, ∼350 mm in O-mode). Nevertheless ECE will be able to make a unique and useful contribution to the RTO/RC ITER measurement set.

日本語訳

本論文は、Reduced Technical Objectives/Reduced Cost International Thermonuclear Experimental Reactor(RTO/RC ITER)における電子サイクロトロン放射(ECE)計測の現状を提示する。本論文は、新しい装置設計が計測要件に及ぼす影響、計測技術がこれらの要件を満たす能力、および新しい配置によって課される実装の変更について考察する。最後に、計測の詳細設計および建設に先立って必要とされる物理研究、設計および研究開発の概要を示す。主な結果は以下の通りである:(i)計測の局在性はITER–FDRと同様である(基準シナリオにおいてXモードで40–100 mm、Oモードで60–200 mm)ため、このより小型の装置では相対的な空間分解能が低下する、および(ii)高温領域における輸送障壁が温度分布に及ぼすと予想される影響は、外側領域における温度勾配の影響により分解能が(Xモードで約250 mm、Oモードで約350 mmに)低下するため、十分に分解されないであろう。それでもなお、ECEはRTO/RC ITERの計測セットに対して独自かつ有用な貢献を行うことができるであろう。

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ITERPlasma diagnosticsElectron cyclotron emission
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