MHD Equilibrium Configuration Reconstructions for HL-2A Tokamak

作     者：何志雄 董家齐 何宏达 蒋海滨 高喆 张锦华 

作者机构：Southwestern Institute of Physics Department of Engineering PhysicsTsinghua University Institute for Fusion Theory and SimulationZhejiang University Department of Engineering Physics Tsinghua University 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2011年第13卷第4期

页      面：424-430页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China(No.10635010) Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20090041110026) 

主　　题：equilibrium reconstruction MHD equilibrium LP signals HL-2A tokamak 

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.