Electric fields and currents in the detached regime of a tokamak

被引：39

作者：

Rozhansky, V. ^{[1
]}

Kaveeva, E. ^{[1
]}

Senichenkov, I. ^{[1
]}

Sytova, E. ^{[1
,2
,3
,4
]}

Veselova, I. ^{[1
]}

Voskoboynikov, S. ^{[1
]}

Coster, D. ^{[2
]}

机构：

[1] Peter Great St Petersburg Polytech Univ, St Petersburg 195251, Russia

[2] Max Planck Inst Plasma Phys, Garching, Germany

[3] Univ Ghent, Ghent, Belgium

[4] Aix Marseille Univ, Marseille, France

来源：

CONTRIBUTIONS TO PLASMA PHYSICS | 2018年 / 58卷 / 6-8期

基金：

俄罗斯科学基金会;

关键词：

detachment; electric field; modelling; SOLPS-ITER; tokamak; EDGE PLASMA;

D O I：

10.1002/ctpp.201700119

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The structure of currents and electric fields in the edge tokamak plasma is analysed for detached regimes of a tokamak. Strong electric fields in the divertor regions and near the X-point are typical for detached regimes. It is shown that the value of the poloidal electric field in the regions with the temperature 1-2 eV is determined by the Spitzer conductivity and parallel currents. The latter are a combination of thermal and Pfirsch-Schluter (PS) currents. The E x B drifts have a significant impact on the distribution of the plasma in the divertor. Stability of the detached regimes with strong electric fields is also analysed. It has been demonstrated that the so-called PS instability caused by PS current can develop in the cold low-temperature regions of the detached divertor.

引用

页码：540 / 546

页数：7

共 11 条

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