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- Fusion (United States)US75 papers
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6 papers · 1 filter
Overstability of Plasma Slow Electron Holes
I H Hutchinson
Sufficient conditions are found on the ion velocity distribution and potential amplitude for stability of steady electron holes moving at slow speeds, coinciding with the bul…
Turbulent broadening of electron heat-flux width in electromagnetic gyrokinetic simulations of a helical scrape-off layer model
N. R. Mandell, G. W. Hammett, A. Hakim +1
We demonstrate that cross-field transport in the scrape-off layer (SOL) can be moderately increased by electromagnetic effects in high-beta regimes, resulting in a broader electron…
Scenario adaptive disruption prediction study for next generation burning-plasma tokamaks
J. Zhu, C. Rea, R. S. Granetz +10
Next generation high performance (HP) tokamaks risk damage from unmitigated disruptions at high current and power. Achieving reliable disruption prediction for a device's HP operat…
Thermal Quench in ITER Locked Mode Disruptions
H. Strauss
Simulations and theory are presented of an ITER locked mode thermal quench (TQ). In present experiments, locked mode disruptions have a long precursor phase, followed by a rapid te…
Verification of a Fully Implicit Particle-in-Cell Method for the Formalism of Electromagnetic Gyrokinetics in the XGC Code
Benjamin J. Sturdevant, S. Ku, L. Chacón +8
A fully implicit particle-in-cell method for handling the -formalism of electromagnetic gyrokinetics has been implemented in XGC. By choosing the -formali…
Constructing a new predictive scaling formula for ITER's divertor heat-load width informed by a simulation-anchored machine learning
C. S. Chang, S. Ku, R. Hager +6
Understanding and predicting divertor heat-load width is a critically important problem for an easier and more robust operation of ITER with high fusion gain. Previous predic…