Study of MHD and turbulence via advanced 2D/3D Imaging Systems on KSTAR

Summary form only given. MagnetoHydroDynamic (MHD) instabilities and turbulence phenomena in tokamak plasmas are complex and multi-dimensional. It is imperative to equip 2D/3D diagnostic systems for a full understanding, which is essential to perfect the theoretical models for MHD and turbulence based transport physics. On KSTAR, such a unique opportunity will be established. A 2D Electron Cyclotron Emission Imaging (ECEI) system has been the leading tool for this effort and it will be extended to a 3D measurement with an additional system at a toroidally separated position in 2012. A 2D Microwave Imaging System (MIR) for density turbulence measurements will be combined with this system. Following a successful operation of the prototype Beam Emission Spectroscopy (BES) system on KSTAR, the full 2D system (8×8) is expected to be operational in 2012. These three imaging diagnostic systems on KSTAR will be instrumental in assessing the multi-dimensional turbulent/fluctuation spectra for the density and temperature. In this paper, MHD study results from the KSTAR ECEI system will be presented, along with a correlation study between the density fluctuations from BES and temperature fluctuations from ECEI. The future study plan for multi-dimensional correlation between Te and ne fluctuation from BES, MIR and ECEI systems will be the focus of this paper.