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A Simulation of H-mode Plasma in DIII-D Tokamak with Complete Core-Edge-SOL Model Using Integrated Predictive Modeling Code

A prediction model of H -mode tokamak plasmas including scrape-off layer (SOL) is investigated, developed and tested in the integrated predictive modeling code named BALDUR. The SOL region is calculated by the two chamber model. Then the formation of the pedestal, a narrow edge plasma region, where a pressure gradient is formed, is calculated by a semi-empirical anomalous core transport model named Mixed Bohm/gyro-Bohm (Mixed B/gB) and the Chang-Hinton neoclassical transport models, which are extended to be applicable for this region by the suppression due to the 𝜔 E×B flow shear and magnetic shear effects. Because of the reduction of transport in the outer region of the plasma, the pedestal can be formed and evolved. The last region is the plasma core, in which a fusion reaction takes place. The plasma core is calculated by a modified semi-empirical anomalous core transport model Mixed B/gB. This full prediction model is used to simulate the time evolution of plasma current, ion and electron temperature, and electron and ion density profiles for 10 DIII-D H -mode discharges. It is found that the H -mode plasma profiles can be seen in all BALDUR simulations. Root-mean-square errors (RMSE) and offsets are calculated to quantify the agreement with the simulated pedestal formation profiles and those obtained from experiment.