Statistical validation of multi-mode model for anomalous transport to high beta and ITB tokamak scenarios in KSTAR

Övrigt konferensbidrag, 2019

The Multi-Mode anomalous transport model is validated employing experimental data for superconducting KSTAR NBI heated tokamak discharges that represent a high beta poloidal, high beta normalized, and ITB long pulse scenarios. The Multi-Mode model computes the anomalous transport driven by the ITG, TEM, ETG, KBM, RBM, and PB modes. In addition, recent modification to the model allows the computation of the anomalous transport driven by the microtearing modes. The validation study is carried out using integrated modeling simulations that employ the numerical PT-SOLVER in the TRANSP code and that utilizes the KSTAR experimental boundary and initial conditions. The equilibrium data is interpolated from EFIT reconstruction. NBI heating and current drive are obtained using NUBEAM. Neoclassical transport is calculated using the Chang-Hinton model. The predicted evolving temperature profiles are compared with the corresponding KSTAR experimental data. The comparison is quantified by calculating the RMS deviations and Offsets.