Self-consistent core-pedestal transport simulations with neural network accelerated models

O Meneghini, SP Smith, PB Snyder, GM Staebler… - Nuclear …, 2017 - iopscience.iop.org
Fusion whole device modeling simulations require comprehensive models that are
simultaneously physically accurate, fast, robust, and predictive. In this paper we describe the …

A gyrokinetic perspective on the JET-ILW pedestal

DR Hatch, M Kotschenreuther, S Mahajan… - Nuclear …, 2017 - iopscience.iop.org
JET has been unable to recover historical confinement levels when operating with an ITER-
like wall (ILW) due largely to the inaccessibility of high pedestal temperatures. Finding a …

[HTML][HTML] Multi-scale gyrokinetic simulations: Comparison with experiment and implications for predicting turbulence and transport

NT Howard, C Holland, AE White, M Greenwald… - Physics of …, 2016 - pubs.aip.org
To better understand the role of cross-scale coupling in experimental conditions, a series of
multi-scale gyrokinetic simulations were performed on Alcator C-Mod, L-mode plasmas …

Simultaneous reproduction of experimental profiles, fluxes, transport coefficients, and turbulence characteristics via nonlinear gyrokinetic profile predictions in a DIII-D …

NT Howard, P Rodriguez-Fernandez, C Holland… - Physics of …, 2024 - pubs.aip.org
Experimental conditions obtained on the DIII-D tokamak in the ITER Similar Shape (ISS)
have been compared extensively with nonlinear gyrokinetic simulation using the CGYRO …

[HTML][HTML] Integrated fusion simulation with self-consistent core-pedestal coupling

O Meneghini, PB Snyder, SP Smith, J Candy… - Physics of …, 2016 - pubs.aip.org
Accurate prediction of fusion performance in present and future tokamaks requires taking
into account the strong interplay between core transport, pedestal structure, current profile …

Validation metrics for turbulent plasma transport

C Holland - Physics of Plasmas, 2016 - pubs.aip.org
Developing accurate models of plasma dynamics is essential for confident predictive
modeling of current and future fusion devices. In modern computer science and engineering …

[HTML][HTML] Validation of gyrokinetic simulations with measurements of electron temperature fluctuations and density-temperature phase angles on ASDEX Upgrade

SJ Freethy, T Görler, AJ Creely, GD Conway… - Physics of …, 2018 - pubs.aip.org
Measurements of turbulent electron temperature fluctuation amplitudes, δ T e⊥/T e⁠,
frequency spectra, and radial correlation lengths, L r (T e⊥)⁠, have been performed at …

Gyrokinetic analysis of inter-edge localized mode transport mechanisms in a DIII-D pedestal

MR Halfmoon, DR Hatch, MT Kotschenreuther… - Physics of …, 2022 - pubs.aip.org
In this study, gyrokinetic simulations are used to study pedestal fluctuations for DIII-D
discharge 174082 using the GENE code. Nonlinear local simulations indicate that electron …

Experimental and numerical investigations of electron transport enhancement by electron-cyclotron plasma-wave interaction in tokamaks

J Cazabonne, P Donnel, S Coda… - Plasma Physics and …, 2023 - iopscience.iop.org
Energy transfer from electron-cyclotron (EC) waves to the plasma is being routinely used in
tokamaks to heat and drive current through the electron channel. Technical applications …

Pedestal transport in H-mode plasmas for fusion gain

M Kotschenreuther, DR Hatch, S Mahajan… - Nuclear …, 2017 - iopscience.iop.org
The first high fidelity gyrokinetic simulations of the energy losses in the transport barriers of
large tokamaks in pursuit of fusion gain are presented. These simulations calculate the …