Interaction between a magnetic island and turbulence

MJ Choi - Reviews of Modern Plasma Physics, 2021 - Springer
Interaction between a magnetic island and turbulence has been intensively studied in recent
years with advance of plasma diagnostics in various plasma experiment devices such as …

A brief review: effects of resonant magnetic perturbation on classical and neoclassical tearing modes in tokamaks

W Zhengxiong, T Weikang, WEI Lai - Plasma Science and …, 2022 - iopscience.iop.org
This paper reviews the effects of resonant magnetic perturbation (RMP) on classical tearing
modes (TMs) and neoclassical tearing modes (NTMs) from the theory, experimental …

Control of neoclassical tearing modes by sawtooth control

O Sauter, E Westerhof, ML Mayoral, B Alper, PA Belo… - Physical review …, 2002 - APS
The onset of a neoclassical tearing mode (NTM) depends on the existence of a large
enough seed island. It is shown in the Joint European Torus that NTMs can be readily …

Disruption prediction investigations using machine learning tools on DIII-D and Alcator C-Mod

C Rea, RS Granetz, K Montes… - Plasma Physics and …, 2018 - iopscience.iop.org
Using data-driven methodology, we exploit the time series of relevant plasma parameters for
a large set of disrupted and non-disrupted discharges to develop a classification algorithm …

Simultaneous access to high normalized density, current, pressure, and confinement in strongly-shaped diverted negative triangularity plasmas

C Paz-Soldan, C Chrystal, P Lunia, AO Nelson… - Nuclear …, 2024 - iopscience.iop.org
Strongly-shaped diverted negative triangularity (NT) plasmas in the DIII-D tokamak
demonstrate simultaneous access to high normalized density, current, pressure, and …

On the requirements to control neoclassical tearing modes in burning plasmas

O Sauter, MA Henderson, G Ramponi… - Plasma Physics and …, 2010 - iopscience.iop.org
Neoclassical tearing modes (NTMs) are magnetic islands which increase locally the radial
transport and therefore degrade the plasma performance. They are self-sustained by the …

The influence of rotation on the βN threshold for the 2∕ 1 neoclassical tearing mode in DIII-D

RJ Buttery, RJ La Haye, P Gohil, GL Jackson… - Physics of …, 2008 - pubs.aip.org
Utilizing a capability to vary neutral beam torque injection in the DIII-D [JL Luxon, Nucl.
Fusion 42, 614 (2002)] tokamak, m∕ n= 2∕ 1 neoclassical tearing mode onset thresholds …

The effect of density fluctuations on electron cyclotron beam broadening and implications for ITER

A Snicker, E Poli, O Maj, L Guidi, A Köhn… - Nuclear …, 2017 - iopscience.iop.org
We present state-of-the-art computations of propagation and absorption of electron cyclotron
waves, retaining the effects of scattering due to electron density fluctuations. In ITER …

[HTML][HTML] Novel aspects of plasma control in ITER

D Humphreys, G Ambrosino, P de Vries, F Felici… - Physics of …, 2015 - pubs.aip.org
ITER plasma control design solutions and performance requirements are strongly driven by
its nuclear mission, aggressive commissioning constraints, and limited number of …

Marginal β-limit for neoclassical tearing modes in JET H-mode discharges

O Sauter, RJ Buttery, R Felton, TC Hender… - Plasma Physics and …, 2002 - iopscience.iop.org
A neoclassical tearing mode (NTM) requires a finite size seed island to become unstable.
Usually the local pressure gradient is relatively large at the β-values needed for these seed …