Development progress of plasma shaping controls in KSTAR

An axisymmetric magnetic shape control system has been developed for creations and sustainment of double-null diverted shape of KSTAR, based on the real-time EFIT/isoflux algorithm. The real-time EFIT scheme is modified to deal with the influences of magnetic materials inside the magnet system. On the design of the isoflux algorithm, various techniques were used in order to decouple the coil responses by the shape changes from the plasma current feedback responses. In this work, we show experimental application results of the developed controls on the KSTAR at the 2011 plasma campaign, and analyze the effects of shaping on the plasma performances.