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Role of the plasma shaping in ITB experiments on JET

F Crisanti, P J Lomas, O Tudisco, A Bécoulet, M Bécoulet, L Bertalot, T Bolzonella, G Bracco, M De Benedetti, B Esposito2003年Plasma Physics and Controlled FusionIF 2.2出版社

A set of dedicated JET experiments is described where the plasma elongation (k) and triangularity (δ) were varied separately in order to study the influence of plasma magnetic topology on the internal transport barrier (ITB). With low δ, type III ELMs were observed and ITBs readily generated. At the highest δ, large type I ELMs and ELM free phases were observed but, at best, only marginal ITBs. At fixed δ the increase of the elongation of internal magnetic surface have a beneficial effect on the transport quality of the ITB.

日本語訳

一連の専用JET実験について説明する。この実験では、プラズマ伸長度(ε)と三角変形度(δ)を個別に変化させ、プラズマ磁気トポロジーが内部輸送障壁(ITB)に及ぼす影響を調べた。低いδでは、タイプIIIのELMが観測され、ITBが容易に形成された。最も高いδでは、大きなタイプIのELMとELMフリー位相が観測されたが、ITBはせいぜいわずかに形成されるのみであった。固定されたδにおいて、内部磁気面の伸長度の増加は、ITBの輸送特性に有益な効果をもたらす。

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jet高精度(タイトル一致)

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JETInternal transport barrier
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