New edge coherent mode providing continuous transport in long-pulse h-mode plasmas

HQ Wang, GS Xu, BN Wan, SY Ding, HY Guo… - Physical review …, 2014 - APS
An electrostatic coherent mode near the electron diamagnetic frequency (20–90 kHz) is
observed in the steep-gradient pedestal region of long pulse H-mode plasmas in the …

Access and sustainment of naturally ELM-free and small-ELM regimes

E Viezzer - Nuclear Fusion, 2018 - iopscience.iop.org
Edge localized modes (ELMs) have a detrimental effect on the plasma facing components
and pose one of the most serious obstacles for steady-state operation in a future fusion …

Prospects of core–edge integrated no-ELM and small-ELM scenarios for future fusion devices

E Viezzer, ME Austin, M Bernert, KH Burrell… - Nuclear Materials and …, 2023 - Elsevier
One of our grand challenges towards fusion energy is the achievement of a high-
performance plasma core coupled to a boundary solution. The high confinement mode (H …

[HTML][HTML] Impurity confinement and transport in high confinement regimes without edge localized modes on DIII-D

BA Grierson, KH Burrell, RM Nazikian… - Physics of …, 2015 - pubs.aip.org
Impurity transport in the DIII-D tokamak [JL Luxon, Nucl. Fusion 42, 614 (2002)] is
investigated in stationary high confinement (H-mode) regimes without edge localized modes …

MHD simulations of small ELMs at low triangularity in ASDEX Upgrade

A Cathey, M Hoelzl, G Harrer, MG Dunne… - Plasma Physics and …, 2022 - iopscience.iop.org
The development of small and no-ELM regimes for ITER is a high priority topic due to the
risks associated with type-I ELMs. By considering non-linear extended …

Excitation Mechanism of Low- Edge Harmonic Oscillations in Edge Localized Mode-Free, High Performance, Tokamak Plasmas

D Brunetti, JP Graves, E Lazzaro, A Mariani, S Nowak… - Physical review …, 2019 - APS
The excitation mechanism for low-n edge harmonic oscillations in quiescent H-mode
regimes is identified analytically. We show that the combined effect of diamagnetic and …

Solitary magnetic perturbations at the ELM onset

RP Wenninger, H Zohm, JE Boom, A Burckhart… - Nuclear …, 2012 - iopscience.iop.org
Tokamak H-mode plasmas frequently exhibit edge-localized modes (ELMs). ELMs allow
maintaining sufficient plasma purity and thus enable stationary H-mode. On the other hand …

Enhanced-recycling H-mode regimes with edge coherent modes achieved by RF heating with lithium-wall conditioning in the EAST superconducting tokamak

HQ Wang, GS Xu, HY Guo, BN Wan, R Chen… - Nuclear …, 2014 - iopscience.iop.org
Two enhanced-recycling H-mode regimes, named low-enhanced-recycling (LER) and high-
enhanced-recycling (HER) H-mode regimes, with edge coherent modes, have been …

Inverse cascade and magnetic vortices in kinetic Alfvén-wave turbulence

G Miloshevich, D Laveder, T Passot… - Journal of Plasma …, 2021 - cambridge.org
A Hamiltonian two-field gyrofluid model for kinetic Alfvén waves (KAWs) in a magnetized
electron–proton plasma, retaining ion finite-Larmor-radius corrections and parallel magnetic …

MHD-blob correlations in NSTX

SJ Zweben, ED Fredrickson, JR Myra, M Podesta… - Physics of …, 2020 - pubs.aip.org
This paper describes a study of the cross-correlations between edge fluctuations as seen in
the gas puff imaging (GPI) diagnostic and low frequency coherent magnetic fluctuations …