Bifurcation of quiescent H-mode to a wide pedestal regime in DIII-D and advances in the understanding of edge harmonic oscillations
X Chen, KH Burrell, TH Osborne, K Barada… - Nuclear …, 2017 - iopscience.iop.org
New experimental studies and modelling of the coherent edge harmonic oscillation (EHO),
which regulates the conventional Quiescent H-mode (QH-mode) edge, validate the …
which regulates the conventional Quiescent H-mode (QH-mode) edge, validate the …
Testing predictions of electron scale turbulent pedestal transport in two DIII-D ELMy H-modes
W Guttenfelder, RJ Groebner, JM Canik… - Nuclear …, 2021 - iopscience.iop.org
In this paper, we present linear and nonlinear gyrokinetic analyses in the pedestal region of
two DIII-D ELMy H-mode discharges using the CGYRO code. The otherwise matched …
two DIII-D ELMy H-mode discharges using the CGYRO code. The otherwise matched …
The role of edge resonant magnetic perturbations in edge-localized-mode suppression and density pump-out in low-collisionality DIII-D plasmas
Two-fluid nonlinear MHD simulations using the TM1 code demonstrate that the formation of
magnetic islands at the top and bottom of the H-mode pedestal, together with the strong …
magnetic islands at the top and bottom of the H-mode pedestal, together with the strong …
Simultaneous reproduction of experimental profiles, fluxes, transport coefficients, and turbulence characteristics via nonlinear gyrokinetic profile predictions in a DIII-D …
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 …
have been compared extensively with nonlinear gyrokinetic simulation using the CGYRO …
Time-dependent experimental identification of inter-ELM microtearing modes in the tokamak edge on DIII-D
In a series of discharges on the DIII-D tokamak, fast vertical plasma jogs are used to induce
current perturbations in the steep gradient region of the H-mode edge. These current …
current perturbations in the steep gradient region of the H-mode edge. These current …
Main ion and impurity edge profile evolution across the L-to H-mode transition on DIII-D
Detailed measurements of the main ion (${D}^{+} $) and impurity ion (${C}^{6+} $) evolution
during the development of the H-mode pedestal across an L–H transition show significant …
during the development of the H-mode pedestal across an L–H transition show significant …
[HTML][HTML] Active spectroscopy measurements of the deuterium temperature, rotation, and density from the core to scrape off layer on the DIII-D tokamak
Main-ion charge exchange recombination spectroscopy (MICER) uses the neutral beam
induced D α spectrum to measure the local deuterium ion (D+) temperature, rotation, and …
induced D α spectrum to measure the local deuterium ion (D+) temperature, rotation, and …
Saturation of fishbone instability by self-generated zonal flows in tokamak plasmas
Gyrokinetic simulations of the fishbone instability in DIII-D tokamak plasmas find that self-
generated zonal flows can dominate the nonlinear saturation by preventing coherent …
generated zonal flows can dominate the nonlinear saturation by preventing coherent …
Inference of main ion particle transport coefficients with experimentally constrained neutral ionization during edge localized mode recovery on DIII-D
The plasma and neutral density dynamics after an edge localized mode are investigated
and utilized to infer the plasma transport coefficients for the density pedestal. The Lyman …
and utilized to infer the plasma transport coefficients for the density pedestal. The Lyman …
[HTML][HTML] Dependence of the impurity transport on the dominant turbulent regime in ELM-y H-mode discharges on the DIII-D tokamak
Laser blow-off injections of aluminum and tungsten have been performed on the DIII-D
tokamak to investigate the variation of impurity transport in a set of dedicated ion and …
tokamak to investigate the variation of impurity transport in a set of dedicated ion and …