Sensitivity of the Particle and Heat Transport in L-mode Tokamaks to The Separatrix Density and Particle Source*

The SAT2 saturation rule employed in the TGLF transport model has been successfully validated for experimental boundary condition within 98% of the separatrix for ohmic and L-mode operation regimes [1]. Predictions of the plasma density and temperature profiles depends on the separatrix density and gas puff. A series of scans of the ion source density and separatrix density has been implemented in the IPS-FASTRAN workflow [2] to match the line-average density and power balance at the edge with TGLF/SAT2 and to explore the sensitivity of the core transport prediction to the boundary density and particle source. Additionally, the 2-point model and C2 Scrape-Off Layer (SOL) transport model have been integrated in the Core-Edge-SOL (CESOL) workflow [3] to explore the heat and particle fluxes across the separatrix when coupling the core-SOL system in a set of DIII-D discharges.