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Tungsten accumulation during ion cyclotron resonance heating operation on WEST

P Maget, P Manas, R Dumont, C Angioni, J-F Artaud, C Bourdelle, F J Casson, L Colas, P Devynck, D Fajardo2023年Plasma Physics and Controlled FusionIF 2.2出版社

The observation of radiative collapses during ion cyclotron resonance heating (ICRH) operation on the full tungsten WEST tokamak constitutes a unique opportunity to get a quantitative balance of the sources and sinks in the core region of the plasma. Experimental analysis and numerical modelling evidence a significant reduction of the effective electron heat source delivered by ICRH compared with expectations on the one hand, and a complex interplay of mechanisms acting on the collisional peaking of tungsten on the other hand. Besides providing an explanation for the observed radiative collapses, this work outlines the variety of phenomenon determining the tungsten profile in ICRH operation.

日本語訳

WESTトカマクの全面タングステン壁におけるイオンサイクロトロン共鳴加熱(ICRH)運転中の放射崩壊の観測は、プラズマコア領域におけるソースとシンクの定量的な収支を得るための独自の機会を提供する。実験解析と数値モデリングは、一方ではICRHによって供給される実効的な電子熱源が期待値と比較して有意に減少していることを実証し、他方ではタングステンの衝突的ピーキングに作用する複雑なメカニズムの相互作用を明らかにする。本稿は、観測された放射崩壊の説明を提供することに加えて、ICRH運転中のタングステン分布を決定する多様な現象の全体像を示すものである。

wiki

TungstenIon cyclotron heatingCyclotron resonanceWESTIon cyclotron resonance
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