Hybrid method for tokamak MHD equilibrium configuration reconstruction

作者：He Hong Da^*; Dong Jia Qi; Zhang Jin Hua; Jiang Hai Bin

来源：Chinese Physics Letters, 2007, 24(2): 497-500.

A hybrid method for tokamak MHD equilibrium configuration reconstruction is proposed and employed in the modified EFIT code. This method uses the free boundary tokamak equilibrium configuration reconstruction algorithm with one boundary point fixed. The results show that the position of the fixed point has explicit effects on the reconstructed divertor configurations. In particular, the separatrix of the reconstructed divertor configuration precisely passes the required position when the hybrid method is used in the reconstruction. The profiles of plasma parameters such as pressure and safety factor for reconstructed HL-2A tokamak configurations with the hybrid and the free boundary methods are compared. The possibility for applications of the method to swing the separatrix strike point on the divertor target plate is discussed.

• 出版日期2007-2
• 单位核工业西南物理研究院