Layout of magnetic probes and flux loops in a poloidal cross section of the KSTAR vacuum vessel.
Toroidal geometry for the integrals.
The simulation test of the current position measurement algorithm without the magnetic probe measurements in the midplane: The blank rectangle is the given current position and the cross is the position calculated by the iteration method. The size of the rectangle is 0.02 m. The measurement accuracy is within 0.01 m except for the extreme position on the lower inside. There is no cross when the algorithm fails.
The experimental result for shot 1216: (a) ECH power, (b) the plasma current, (c) the plasma radial position, and (d) the plasma vertical position.
CCD images of KSTAR plasma (a) at 0.005 s, (b) at 0.011 s, (c) at 0.524 s, (d) at 0.62 s, and (e) at 0.715 s.
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