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Multi-scale Interaction Mechanism for Edge-Localized-Mode Suppression in the Tokamak Edge [PDF]

open access: yesNature Communications
A central challenge in fusion energy is reconciling the high-confinement mode required for reactor performance with the intense intermittent relaxation events it produces, known as edge-localized modes.
Zeyu Li   +13 more
doaj   +4 more sources

Poloidal localization of the explosive onset of edge localized modes

open access: yesNuclear Fusion, 2023
In ASDEX Upgrade lower single null H-mode plasmas, the onset of the explosive phase of Edge Localized Modes (ELMs) is poloidally localized in the X-point/outer strike point (X/OSP) region. From this location, ELMs develop on average towards the low-field
E. Trier   +5 more
doaj   +4 more sources

Simulation of edge localized mode heat pulse using drift-kinetic ions and Boltzmann electrons

open access: yesNuclear Materials and Energy, 2019
This article reports on 1D+2V heat pulse propagation studies using the COGENT guiding center kinetic code. The model uses magnetized kinetic ions and a simple Boltzmann electron model.
I. Joseph, M.A. Dorf, M.R. Dorr
doaj   +3 more sources

Electron temperature fluctuation levels of the quasi-coherent mode across the plasma radius [PDF]

open access: yesEPJ Web of Conferences, 2023
EDA H-mode is an ELM-free regime in which the edge quasi-coherent mode (QCM) replaces the ELMs. The estimated location of the quasi-coherent mode is in a partly optically thin region of steep gradients localized between ρpol = 0.96 -1.
Vanovac Branka   +11 more
doaj   +1 more source

The Effect of Edge Mode on Mass Sensing for Strained Graphene Resonators

open access: yesMicromachines, 2021
Edge mode could disturb the ultra-subtle mass detection for graphene resonators. Herein, classical molecular dynamics simulations are performed to investigate the effect of edge mode on mass sensing for a doubly clamped strained graphene resonator ...
Xing Xiao, Shang-Chun Fan, Cheng Li
doaj   +1 more source

Turbulence characterization during the suppression of edge-localized modes by magnetic perturbations on ASDEX Upgrade

open access: yesNuclear Fusion, 2023
We study localized edge turbulence in the ASDEX Upgrade tokamak that appears if resonant magnetic perturbations (RMP) are applied to suppress edge localized modes (ELMs) in the high confinement mode.
N. Leuthold   +19 more
doaj   +1 more source

Nonlinear simulation of edge localized mode with pressure profile modified by pellet injection through a BOUT++ three-field MHD model

open access: yesNuclear Materials and Energy, 2021
A BOUT++ three-field MHD model is applied to study the effect of the pedestal pressure profile modified by the pellet injection from the low field side on the nonlinear behaviors of ELM.
Mao Li   +3 more
doaj   +1 more source

Induced microwave scattering in the ITER edge transport barrier at ECRH and possibility of its modeling at ASDEX-Upgrade [PDF]

open access: yesEPJ Web of Conferences, 2023
The induced scattering parametric decay instability of O-mode polarized microwaves leading to excitation of lower hybrid or electron plasma waves localized within a tokamak edge transport barrier is investigated.
Gusakov Evgeniy   +2 more
doaj   +1 more source

Mechanism of phonon localized edge modes [PDF]

open access: yesPhysical Review B, 2010
The phonon localized edge modes are systematically studied, and two conditions are proposed for the existence of the localized edge modes: (I) coupling between different directions ($x$, $y$ or $z$) in the interaction; (II) different boundary conditions in three directions.
Jiang, Jin-Wu, Wang, Jian-Sheng
openaire   +3 more sources

Automatic identification of edge localized modes in the DIII-D tokamak

open access: yesAPL Machine Learning, 2023
Fusion power production in tokamaks uses discharge configurations that risk producing strong type I edge localized modes. The largest of these modes will likely increase impurities in the plasma and potentially damage plasma facing components, such as ...
Finn H. O’Shea   +3 more
doaj   +1 more source

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