Effect of passive plates on vertical instability in the EAST tokamak |
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Authors: | Liu Guang-Jun Wan Bao-Nian Qian Jin-Ping Sun You-Wen Xiao Bing-Jia Shen Biao Luo Zheng-Ping Ji Xiang Chen Shu-Liang |
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Affiliation: | Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China |
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Abstract: | The effect of passive plates on vertical displacement control in EAST tokamak is investigated by open loop experiments and numerical simulations based on a rigid displacement model. The experiments and simulations indicate that the vertical instability growth rate is reduced by a factor of about 2 in the presence of the passive plates, where the adjacent segments are not connected to each other. The simulations also show that the vertical instability growth rate is reduced by a factor of about 10 if all adjacent segments on each passive plate loop are connected to each other. The operational window is greatly enlarged with the passive plates. |
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Keywords: | passive plate vertical instability rigid displacement model |
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