Active Feedback Control Used in Plasma Vertical Unstable Displacement for EAST

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Abstract:

EAST (Experimental Advanced Superconducting Tokamak), a National Mage-project of Science Research of China, is a very important fusion experiment facility. The ability of magnetic confinement to plasma can be improved by elongating plasma cross-section to form divertor configuration in EAST. But elongated plasma has vertical displacement instability, without control, plasma will dash against wall of vacuum vessel and disrupt, that will cause failure of plasma discharge. So feedback control system is needed to restrain plasma vertical displacement. Fast control power supply excites active feedback coils, which produces magnetic field to control plasmas displacement. The validity of proposed scheme was confirmed by experiments, the active feedback system can reach design demand.

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758-762

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August 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] Bondeson A, Liu D. -H., Söldner F. X, Persson M., Baranov Yu. F, Huysmans G.T.A. MHD beta limits for advanced scenarios on JET,. Nuclear Fusion. vol. 39, pp.1523-1533, (1999).

DOI: 10.1088/0029-5515/39/11/303

Google Scholar

[2] LIU Cheng-yue, CHEN Mei-xia, WU Bin. Study on Vertical Displacement Instability on EAST Tokamak,. Nuclear Fusion and Plasma Physics. vol. 29, pp.301-304, (2009).

Google Scholar

[3] LIU Cheng-yue, CHEN Mei-xia, SONG Feng-quan. Numerical simulation of plasma current and configuration evolution in the EAST,. Journal of Hefei University of Technology (Natural Science). vol. 31, pp.314-316, (2008).

Google Scholar

[4] Haihong Huang, Haixin Wang, Ge Gao, Peng Fu. Application of Phase-shift PWM in EAST Fast Control Power Supply,. IEEE Transactions on Applied Superconductivity. vol. 20, pp.1671-1675, (2010).

DOI: 10.1109/tasc.2009.2039470

Google Scholar

[5] HUANG Hai-hong, GAO Ge, FU Peng1, WANG Hai-xin, YAN Shi-chao. Application of Three-level Large Power Paralleling Inverter in EAST System,. Nuclear Fusion and Plasma Physics. vol. 28, pp.358-361, (2008).

Google Scholar