Radial magnetic field in magnetic confinement device

doi:10.1088/1674-1056/24/9/095202

Abstract The intrinsic radial magnetic field (B_r) in a tokamak is explored by the solution of the Grad-Shafranov equation in axisymmetric configurations through an expansion of the four terms of the magnetic surfaces. It can be inferred from the simulation results that at the core of the device, the tokamak should possess a three-dimensional magnetic field configuration, which could be reduced to a two-dimensional one when the radial position is greater than 0.6a. The radial magnetic field and the amzimuthal magnetic field have the same order of magnitude at the core of the device. These results can offer a reference for the analysis of the plasma instability, the property of the core plasma, and the magnetic field measurement.

Keywords: radial magnetic field minor toroidal coordinate three-dimensional magnetic field configuration

Received: 29 December 2014
Revised: 09 April 2015
Accepted manuscript online:

PACS:	52.55.-s	(Magnetic confinement and equilibrium)
	52.55.Fa	(Tokamaks, spherical tokamaks)
	52.55.Dy	(General theory and basic studies of plasma lifetime, particle and heat loss, energy balance, field structure, etc.)

Fund: Project supported by the Special Domestic Program of ITER, China (Grant No. 2009GB105003).

Corresponding Authors: Liu Ming-Hai
E-mail: mhliu@hust.edu.cn

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Xiong Hao (熊昊), Liu Ming-Hai (刘明海), Chen Ming (陈明), Rao Bo (饶波), Chen Jie (陈杰), Chen Zhao-Quan (陈兆权), Xiao Jin-Shui (肖金水), Hu Xi-Wei (胡希伟) Radial magnetic field in magnetic confinement device 2015 Chin. Phys. B 24 095202

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