Nonlinear dynamics of the reversed shear Alfvén eigenmode in burning plasmas
W Tao, WEI Shizhao, S Briguglio… - Plasma Science and …, 2024 - iopscience.iop.org
In a tokamak fusion reactor operated at steady state, the equilibrium magnetic field is likely
to have reversed shear in the core region, as the noninductive bootstrap current profile …
to have reversed shear in the core region, as the noninductive bootstrap current profile …
Alfvén eigenmode classification based on ECE diagnostics at DIII-D using deep recurrent neural networks
Modern tokamaks have achieved significant fusion production, but further progress towards
steady-state operation has been stymied by a host of kinetic and MHD instabilities. Control …
steady-state operation has been stymied by a host of kinetic and MHD instabilities. Control …
Exploring data-driven models for spatiotemporally local classification of Alfvén eigenmodes
Alfvén eigenmodes (AEs) are an important and complex class of plasma dynamics
commonly observed in tokamaks and other plasma devices. In this work, we manually …
commonly observed in tokamaks and other plasma devices. In this work, we manually …
MAS: A versatile Landau-fluid eigenvalue code for plasma stability analysis in general geometry
We have developed a new global eigenvalue code, multiscale analysis for plasma stabilities
(MAS), for studying plasma problems with wave toroidal mode number (n) and frequency (ω) …
(MAS), for studying plasma problems with wave toroidal mode number (n) and frequency (ω) …
Stability of beta-induced Alfvén eigenmodes (BAE) in DIII-D
Although the stability of ellipticity, toroidal and reversed-shear Alfvén eigenmodes (EAE,
TAE, RSAE) are relatively well understood, less is known about the stability of lower …
TAE, RSAE) are relatively well understood, less is known about the stability of lower …
Physics of drift Alfvén instabilities and energetic particles in fusion plasmas
Shear Alfvén wave (SAW)/drift Alfvén wave (DAW) fluctuations can be destabilized by
energetic particles (EPs) as well as thermal plasma components, which play a key role in the …
energetic particles (EPs) as well as thermal plasma components, which play a key role in the …
Beam modulation and bump-on-tail effects on Alfvén eigenmode stability in DIII-D
Beam modulation effects on Alfvén eigenmode stability have been investigated in a recent
DIII-D experiment and show that variations in neutral beam modulation period can have an …
DIII-D experiment and show that variations in neutral beam modulation period can have an …
Gyrokinetic simulation of low-frequency Alfvénic modes in DIII-D tokamak
Global gyrokinetic simulations find that a beta-induced Alfvén eigenmode (BAE) and a low-
frequency mode (LFM) co-exist in the DIII-D tokamak experiments. The simulated LFM mode …
frequency mode (LFM) co-exist in the DIII-D tokamak experiments. The simulated LFM mode …
Comparison of machine learning systems trained to detect Alfvén eigenmodes using the CO2 interferometer on DIII-D
Abstract A Machine-Learning (ML) based detection scheme that automatically detects Alfvén
Eigenmodes (AE) in a labelled DIII-D database is presented here. Controlling AEs is …
Eigenmodes (AE) in a labelled DIII-D database is presented here. Controlling AEs is …
Theoretical studies of low-frequency Alfvén modes in tokamak plasmas
The linear wave properties of the low-frequency Alfvén modes (LFAMs) observed in the DIII-
D tokamak experiments with reversed magnetic shear (Heidbrink et al 2021 Nucl. Fusion 61 …
D tokamak experiments with reversed magnetic shear (Heidbrink et al 2021 Nucl. Fusion 61 …