FEEDBACK CONTROL OF VERTICAL PLASMA POSITION IN NON-CIRCULAR TOKAMAK TNT-A.

被引:0
|
作者
Nagayama, Y. [1 ]
Naito, M. [1 ]
Ueda, Y. [1 ]
Ohki, Y. [1 ]
Miyamoto, K. [1 ]
机构
[1] Univ of Tokyo, Dep of Physics,, Tokyo, Jpn, Univ of Tokyo, Dep of Physics, Tokyo, Jpn
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CONTROL SYSTEMS - PLASMAS;
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摘要
An experimental investigation of feedback control of the vertical plasma position in the noncircular tokamak TNT-A is described. When the loop gain of the feedback control system is high, the plasma displacement is small, but the saturation of the servo-amplifier limits the maximum loop gain. It is observed that the stable region in the diagram of the loop gain and the n-index (g-n diagram) shrinks as the n-index approaches a critical value. The experimental results are consistent with the theoretical model in which the effect of the toroidal gaps in the resistive shell and the vacuum vessel is considered.
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页码:1243 / 1249
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