Self-consistent diverted tokamak equilibria with nonzero edge current

doi:10.1088/1674-1056/21/4/045203

中国物理B ›› 2012, Vol. 21 ›› Issue (4): 45203-045203.doi: 10.1088/1674-1056/21/4/045203

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

石秉仁

收稿日期:2011-08-01 修回日期:2011-09-02 出版日期:2012-02-29 发布日期:2012-02-29
通讯作者: 石秉仁,Shibr@swip.ac.cn E-mail:Shibr@swip.ac.cn

Self-consistent diverted tokamak equilibria with nonzero edge current

Shi Bing-Ren(石秉仁)^†

Southwestern Institute of Physics, Chengdu 610041, China

Received:2011-08-01 Revised:2011-09-02 Online:2012-02-29 Published:2012-02-29
Contact: Shi Bing-Ren,Shibr@swip.ac.cn E-mail:Shibr@swip.ac.cn
Supported by:
Project supported by the National Magnetic Confinement Fusion Science Program of China (Grant No. 2009GB101002).

摘要/Abstract

Abstract: The semi-analytical method, previously used to construct model double-null and single-null diverted tokamak equilibria (Bingren Shi, Plasma Phys. Control Fusion/ 50 (2008) 085006, 51 (2009) 105008, Nucl. Fusion/ 51 (2011) 023004), is extended to describe diverted tokamak equilibria with nonzero edge current, including the Pfirsch-Schlüter(PS) current. The PS current density is expressed in a way suitable to describe a diverted tokamak configuration in the near separatrix region. The model equilibrium is expressed by only two terms of the exact separable solutions of the Grad-Shafranov equation, one of which is governed by a homogeneous ordinary differential equation, and the other by an inhomogeneous one. The particular merits of such a model configuration are that the internal region inside the separatrix and a suitable scrape-off layer can be simultaneously described by this exact solution. To investigate the physics in the region near the X-point, the magnetic surfaces can be satisfactorily described by approximate hyperbolic curves.

Key words: diverter configuration, nonzero edge current, PS current

中图分类号: (Tokamaks, spherical tokamaks)

52.55.Fa

52.55.Rk (Power exhaust; divertors)

石秉仁. [J]. 中国物理B, 2012, 21(4): 45203-045203.

Shi Bing-Ren(石秉仁) . Self-consistent diverted tokamak equilibria with nonzero edge current[J]. Chin. Phys. B, 2012, 21(4): 45203-045203.

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Self-consistent diverted tokamak equilibria with nonzero edge current

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