Multi-scale turbulence simulation suggesting improvement of electron heated plasma confinement

S Maeyama, TH Watanabe, M Nakata… - Nature …, 2022 - nature.com
Turbulent transport is a key physics process for confining magnetic fusion plasma. Recent
theoretical and experimental studies of existing fusion experimental devices revealed the …

The role of ETG modes in JET–ILW pedestals with varying levels of power and fuelling

B Chapman-Oplopoiou, DR Hatch, AR Field… - Nuclear …, 2022 - iopscience.iop.org
We present the results of GENE gyrokinetic calculations based on a series of JET–ITER-like-
wall (ILW) type I ELMy H-mode discharges operating with similar experimental inputs but at …

Identifying the microtearing modes in the pedestal of DIII-D H-modes using gyrokinetic simulations

E Hassan, DR Hatch, MR Halfmoon, M Curie… - Nuclear …, 2021 - iopscience.iop.org
Recent evidence points toward the microtearing mode (MTM) as an important fluctuation in
the H-mode pedestal for anomalous electron heat transport. A study of the instabilities in the …

[HTML][HTML] Reduced models for ETG transport in the tokamak pedestal

DR Hatch, C Michoski, D Kuang… - Physics of …, 2022 - pubs.aip.org
This paper reports on the development of reduced models for electron temperature gradient
(ETG) driven transport in the pedestal. Model development is enabled by a set of 61 …

Isotope mass dependence of pedestal transport in JET H-mode plasmas

I Predebon, DR Hatch, L Frassinetti, L Horvath… - Nuclear …, 2023 - iopscience.iop.org
We present a comparative transport analysis of the isotope mass dependence in the
pedestal of two pairs of deuterium/hydrogen type I ELMy H-mode discharges in JET with …

On electromagnetic turbulence and transport in STEP

M Giacomin, D Kennedy, FJ Casson… - Plasma Physics and …, 2024 - iopscience.iop.org
In this work, we present first-of-their-kind nonlinear local gyrokinetic (GK) simulations of
electromagnetic turbulence at mid-radius in the burning plasma phase of the conceptual …

Three-dimensional inhomogeneity of electron-temperature-gradient turbulence in the edge of tokamak plasmas

JF Parisi, FI Parra, CM Roach, MR Hardman… - Nuclear …, 2022 - iopscience.iop.org
Nonlinear multiscale gyrokinetic simulations of a Joint European Torus edge pedestal are
used to show that electron-temperature-gradient (ETG) turbulence has a rich three …

Nonlinear microtearing modes in MAST and their stochastic layer formation

M Giacomin, D Dickinson, D Kennedy… - Plasma Physics and …, 2023 - iopscience.iop.org
First nonlinear gyrokinetic simulations of microtearing modes in the core of a MAST case are
performed on two surfaces of the high-collisionality discharge used in Valovič et al (2011 …

Microtearing modes as the source of magnetic fluctuations in the JET pedestal

DR Hatch, M Kotschenreuther, SM Mahajan… - Nuclear …, 2021 - iopscience.iop.org
We report on a detailed study of magnetic fluctuations in the JET pedestal, employing basic
theoretical considerations, gyrokinetic simulations, and experimental fluctuation data to …

ETG turbulent transport in the Mega Ampere Spherical Tokamak (MAST) pedestal

PY Li, DR Hatch, B Chapman-Oplopoiou… - Nuclear …, 2023 - iopscience.iop.org
The results of a gyrokinetic analysis of turbulent transport driven by the electron temperature
gradient (ETG) in the MAST pedestal are presented. Local nonlinear simulations from the …