Demonstration of real-time plasma shape reconstruction by Cauchy Condition Surface method in KSTAR

Miyata, Yoshiaki; Hahn, S. H.*; Suzuki, Takahiro; Ide, Shunsuke; Chung, J.*; Bak, J. G.*; Ko, W. H.*

The plasma shape reconstruction is essential for plasma equilibrium control and detailed physics analysis. Various methods to reconstruct a plasma shape have been developed for many tokamaks. Cauchy Condition Surface (CCS) method has reconstructed a plasma shape using the magnetic measurements in JT-60U. The CCS calculation can reconstruct the outermost magnetic surface, and calculate the eddy currents induced in the toroidal structure and the quantities related to plasma shape such as the Shafranov lambda, the safety factor and so on. In this presentation, the demonstration of real-time plasma shape reconstruction by the CCS calculation in KSTAR is discussed.