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DOE OSTI · 3347392

Understanding and Predicting Pedestal Scenarios on NSTX-U (Final Technical Report)

Hatch, David R. [Univ. of Texas, Austin, TX (United States). Institute for Fusion Studies]
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Abstract

This project investigated gyrokinetic instabilities in the NSTX pedestal, identified the major transport mechanisms (some of them novel) in the NSTX pedestal, and developed and validated a predictive modeling capability for pedestal transport in spherical tokamaks, with particular emphasis on NSTX discharges. The work combined first-principles gyrokinetic simulations, reduced transport models, integrated transport calculations with ASTRA, and exploratory machine learning tools. The central outcome is a practical modeling capability for pedestal temperature profiles based on reduced models informed and constrained by gyrokinetic physics.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYgyrokineticsnstxpedestalpredictive modeling

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Hatch, David R. [Univ. of Texas, Austin, TX (United States). Institute for Fusion Studies]. 2026-05-04. Understanding and Predicting Pedestal Scenarios on NSTX-U (Final Technical Report). https://doi.org/10.2172/3347392

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