Full kinetic equilibrium reconstruction of NSTX plasmas using the OMFIT workflow

Equilibrium reconstruction, an initial step in plasma transport analysis, relies on a multitude of diagnostic and model input. The OMFIT framework provides the capability to combine available diagnostic measurements and different numerical codes into a consistent solution to obtain a full kinetic equilibrium reconstruction and has been recently adapted to NSTX/NSTX-U specific data. This work demonstrates how this workflow addresses tasks of kinetic profiles fitting and integration of EFIT-TRANSP codes to provide the self-consistent equilibrium reconstruction with kinetic constraints of total pressure, including beam pressure, and current density profile. One of the main advantages of this approach is a large number of built-in validation metrics for the data consistency check, which are illustrated in this work via NSTX data. Signals, namely polarization angle, neutron rate, stored plasma energy reconstructed by EFIT and TRANSP codes demonstrate reasonable agreement with experimental data inside the uncertainty intervals. Variations of the final solution of equilibrium reconstruction obtained based on the magnetic, MSE and kinetic profiles measurements in comparison to full kinetic equilibrium reconstruction have been investigated in L-mode and H-mode discharges.