Plasma performance and operational space without ELMs in DIII-D

C Paz-Soldan, DIII-D Team - Plasma Physics and Controlled …, 2021 - iopscience.iop.org
Abstract A database of DIII-D plasmas without edge-localized modes (ELMs) compares the
operating space and plasma performance of stationary no-ELM regimes found in …

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 …

Role of sheared E× B flow in self-organized, improved confinement states in magnetized plasmas

KH Burrell - Physics of Plasmas, 2020 - pubs.aip.org
ABSTRACT A major scientific success story of magnetic fusion research in the past several
decades has been the theoretical development and experimental testing of the process of …

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 …

Discovery of stationary operation of quiescent H-mode plasmas with net-zero neutral beam injection torque and high energy confinement on DIII-D

KH Burrell, K Barada, X Chen, AM Garofalo… - Physics of …, 2016 - pubs.aip.org
Recent experiments in DIII-D [JL Luxon et al., in Plasma Physics and Controlled Nuclear
Fusion Research 1996 (International Atomic Energy Agency, Vienna, 1987), Vol. I, p. 159] …

Stationary QH-mode plasmas with high and wide pedestal at low rotation on DIII-D

X Chen, KH Burrell, TH Osborne, WM Solomon… - Nuclear …, 2016 - iopscience.iop.org
A stationary, quiescent H-mode (QH-mode) regime with a wide pedestal and improved
confinement at low rotation has been discovered on DIII-D with reactor relevant edge …

Grassy-ELM regime with edge resonant magnetic perturbations in fully noninductive plasmas in the DIII-D tokamaka

R Nazikian, CC Petty, A Bortolon, X Chen… - Nuclear …, 2018 - iopscience.iop.org
Resonant magnetic perturbations (n= 3 RMPs) are used to suppress large amplitude ELMs
and mitigate naturally occurring'grassy'-ELMs in DIII-D plasmas relevant to the ITER steady …

Real-time confinement regime detection in fusion plasmas with convolutional neural networks and high-bandwidth edge fluctuation measurements

K Gill, D Smith, S Joung, B Geiger… - Machine Learning …, 2024 - iopscience.iop.org
A real-time detection of the plasma confinement regime can enable new advanced plasma
control capabilities for both the access to and sustainment of enhanced confinement …

ELM suppression by boron powder injection and comparison with lithium powder injection on EAST

R Maingi, JS Hu, Z Sun, A Diallo, K Tritz, YZ Qian… - Journal of Fusion …, 2020 - Springer
Type I edge-localized modes (ELMs) in the Experimental Advanced Superconducting
Tokamak (EAST) were completely suppressed via boron powder injection into the X-point …

A stationary long-pulse ELM-absent H-mode regime in EAST

Y Ye, GS Xu, BN Wan, R Chen, N Yan, HY Guo… - Nuclear …, 2017 - iopscience.iop.org
A stationary edge-localized mode (ELM)-absent H-mode regime, with an electrostatic edge
coherent mode (ECM) which resides in the pedestal region, has been achieved in the EAST …