MHD Equilibrium Configuration Reconstructions for HL-2A Tokamak

被引:3
|
作者
He Zhixiong [1 ,2 ]
Dong Jiaqi [1 ,3 ]
He Hongda [1 ]
Jiang Haibin [1 ]
Gao Zhe [2 ]
Zhang Jinhua [1 ]
机构
[1] SW Inst Phys, Chengdu 610041, Peoples R China
[2] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[3] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310013, Zhejiang, Peoples R China
基金
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词
equilibrium reconstruction; MHD equilibrium; LP signals; HL-2A tokamak;
D O I
10.1088/1009-0630/13/4/08
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 EFIT (Equilibrium Fitting) code is modified for the equilibrium configuration reconstruction in HL-2A. Signals from Langmuir probe (LP) at the divertor target plates are employed in the reconstruction of divertor configurations. The results show that discharge #2895 starts with a limiter configuration and develops gradually into a divertor configuration after t=230 ms. This transition process is clearly demonstrated by the LP signals for the reconstruction. The profiles of plasma parameters such as safety factor q, pressure and current density as well as the evolution of major shape parameters of plasma, such as the boundary magnetic fluxes, the positions of both x-point and magnetic axis, are calculated from the reconstructed configurations. The possibility to apply the method to the swing of strike point on the target plate is discussed.
引用
收藏
页码:424 / 430
页数:7
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