The role of turbulence–flow interactions in L-to H-mode transition dynamics: recent progress

L Schmitz - Nuclear Fusion, 2017 - iopscience.iop.org
Recent experimental and simulation work has substantially advanced the understanding of
L-mode plasma edge turbulence and plasma flows and their mutual interaction across the L …

[HTML][HTML] Recent progress on spherical torus research

M Ono, R Kaita - Physics of Plasmas, 2015 - pubs.aip.org
The spherical torus or spherical tokamak (ST) is a member of the tokamak family with its
aspect ratio (A= R 0/a) reduced to A∼ 1.5, well below the normal tokamak operating range …

High-accuracy characterization of the edge radial electric field at ASDEX Upgrade

E Viezzer, T Pütterich, GD Conway, R Dux… - Nuclear …, 2013 - iopscience.iop.org
The installation of a new poloidal charge exchange recombination spectroscopy (CXRS)
diagnostic at ASDEX Upgrade (AUG) has enabled the determination of the radial electric …

Survey of the H-mode power threshold and transition physics studies in ASDEX Upgrade

F Ryter, SK Rathgeber, LB Orte, M Bernert… - Nuclear …, 2013 - iopscience.iop.org
An overview of the H-mode threshold power in ASDEX Upgrade which addresses the impact
of the tungsten versus graphite wall, the dependences upon plasma current and density, as …

Recent progress towards a physics-based understanding of the H-mode transition

GR Tynan, I Cziegler, PH Diamond… - Plasma Physics and …, 2016 - iopscience.iop.org
Results from recent experiment and numerical simulation point towards a picture of the LH
transition in which edge shear flows interacting with edge turbulence create the conditions …

Overview of physics results from the conclusive operation of the National Spherical Torus Experiment

SA Sabbagh, JW Ahn, J Allain, R Andre… - Nuclear …, 2013 - iopscience.iop.org
Abstract Research on the National Spherical Torus Experiment, NSTX, targets physics
understanding needed for extrapolation to a steady-state ST Fusion Nuclear Science …

Numerical modeling of the transition from low to high confinement in magnetically confined plasma

JJ Rasmussen, AH Nielsen, J Madsen… - Plasma Physics and …, 2015 - iopscience.iop.org
The transition dynamics from low (L) to high (H) mode confinement in magnetically confined
plasmas is investigated using a four-field drift fluid model—HESEL (Hot Edge-Sol …

Projections of H-mode access and edge pedestal in the SPARC tokamak

JW Hughes, NT Howard… - Journal of Plasma …, 2020 - cambridge.org
In order to inform core performance projections and divertor design, the baseline SPARC
tokamak plasma discharge is evaluated for its expected H-mode access, pedestal pressure …

MAST: results and upgrade activities

AW Morris - IEEE Transactions on plasma science, 2012 - ieeexplore.ieee.org
MAST, alongside other spherical Tokamaks (STs), provides new perspectives on Tokamak
physics for ITER and beyond and a platform to explore the potential of the ST as the core of …

Pedestal and Er profile evolution during an edge localized mode cycle at ASDEX Upgrade

M Cavedon, T Pütterich, E Viezzer… - Plasma Physics and …, 2017 - iopscience.iop.org
The upgrade of the edge charge exchange recombination spectroscopy diagnostic at
ASDEX Upgrade has enabled highly spatially resolved measurements of the impurity ion …