Plasma shape optimization for EAST tokamak using orthogonal method

doi:10.1088/1674-1056/28/1/015201

Abstract

It is necessary to reduce the currents of poloidal field (PF) coils as small as possible, during the static equilibrium design procedure of Experimental Advanced Superconductive Tokamak (EAST). The quasi-snowflake (QSF) divertor configuration is studied in this paper. Starting from a standard QSF plasma equilibrium, a new QSF equilibrium with 300 kA total plasma current is designed. In order to reduce the currents of PF6 and PF14, the influence of plasma shape on PF coil current distribution is analyzed. A fixed boundary equilibrium solver based on a non-rigid plasma model is used to calculate the flux distribution and PF coil current distribution. Then the plasma shape parameters are studied by the orthogonal method. According to the result, the plasma shape is redefined, and the calculated equilibrium shows that the currents of PF6 and PF14 are reduced by 3.592 kA and 2.773 kA, respectively.

Keywords: EAST plasma shape orthogonal method plasma equilibrium calculation

Received: 23 August 2018
Revised: 26 October 2018
Accepted manuscript online:

PACS:	52.55.-s	(Magnetic confinement and equilibrium)
	52.65.-y	(Plasma simulation)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No. 51677051) and the Institute of Plasma Physics, Chinese Academy of Sciences.

Corresponding Authors: Xiao-Hua Bao
E-mail: sukz@ustc.edu.cn

Cite this article:

Yuan-Yang Chen(陈远洋), Xiao-Hua Bao(鲍晓华), Peng Fu(傅鹏), Ge Gao(高格) Plasma shape optimization for EAST tokamak using orthogonal method 2019 Chin. Phys. B 28 015201

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