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Analysis of a global energy confinement database for JET ohmic plasmas

G. Bracco, K. Thomsen1997年被引用 15Nuclear FusionIF 3出版社

A database containing global energy confinement data for JET ohmic plasmas in the campaigns from 1984 to 1992 has been established. An analysis is presented of this database and the results are compared with data from other tokamaks, such as the Axially Symmetric Divertor Experiment (ASDEX), Frascati Tokamak Upgrade (FTU) and Tore Supra. The trends of JET ohmic confinement appear to be similar to those observed on other tokamaks: a linear dependence of the global energy confinement time on density is observed up to a density value where a saturation is attained; this density value defines the border between the linear and the saturated ohmic confinement regimes; this border is shifted towards higher density values if the q value of the discharge is decreased; the global confinement time in the saturated ohmic regime increases less than linearly with the value of the magnetic field

日本語訳

1984年から1992年までのキャンペーンにおけるJETオーミックプラズマの全球エネルギー閉じ込めデータを含むデータベースが構築された。このデータベースの解析結果が提示され、ASDEX、FTU、Tore Supraなどの他のトカマクからのデータと比較される。JETのオーミック閉じ込めの傾向は他のトカマクで観測されたものと類似しているように見える:閉じ込め時間の密度に対する線形依存性が、飽和が達成される密度値まで観測される。この密度値が線形オーミック閉じ込め領域と飽和オーミック閉じ込め領域の境界を定義する。この境界は、プラズマのq値が減少するとより高い密度値へとシフトする。飽和オーミック領域における閉じ込め時間は、磁場の値に対して線形よりも緩やかに増加する。

装置

jet高精度(タイトル一致)asdex-upgrade中精度(概要文一致)

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JETOhmic heatingEnergy confinement
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