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3D passive stabilization of n = 0 MHD modes in EAST tokamak
S L Chen1, F Villone2, B J Xiao1,3
1Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, People's Republic of China.
Abstract:
Evidence is shown of the capability of non-axisymmetrical conducting structures in the Experimental Advanced Superconducting Tokamak (EAST) to guarantee the passive stabilization of the n = 0 MHD unstable mode. Suitable numerical modeling of the experiments allows a clear interpretation of the phenomenon. This demonstration and the availability of computational tools able to describe the effect of 3D conductors will have a huge impact on the design of future fusion devices, in which the conducting structures closest to plasma will be highly segmented.
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