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Hybrid Method for Tokamak MHD Equilibrium Configuration Reconstruction |
HE Hong-Da;DONG Jia-Qi;ZHANG Jin-Hua; JIANG Hai-Bin |
| Southwestern Institute of Physics, Chengdu 610041 |
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| Cite this article: |
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HE Hong-Da, DONG Jia-Qi, ZHANG Jin-Hua et al 2007 Chin. Phys. Lett. 24 497-500 |
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Abstract 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.
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| Keywords:
52.55.-s
52.65.Kj
52.55.Fa
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Received: 08 September 2006
Published: 24 February 2007
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| PACS: |
52.55.-s
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(Magnetic confinement and equilibrium)
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52.65.Kj
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(Magnetohydrodynamic and fluid equation)
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52.55.Fa
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(Tokamaks, spherical tokamaks)
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