Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges

A series of high-frequency ( $400\sim1000{\text{ kHz}}$ ) bursting core-localized Alfvén instabilities have been observed during ohmic discharges in EAST tokamak. The instability trigger favours the discharge conditions of low toroidal magnetic field and low electron density. The toroidal mode numbe...

Full description

Bibliographic Details
Published in:	Nuclear Fusion
Main Authors:	P. Su, H. Lan, C. Zhou, J. Bao, A. Liu, X. Zhu, M. Wu, C. Luo, J. Han, J. Wang, H. Liu, T. Zhang, R. Zhou, S. Lin, H. Zhao, Y. Sun, Z. Qiu, N. Chu, T. Tang, Y. Tan, L. Zeng, Z. Gao
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	ellipticity-induced Alfvén eigenmodes energetic electrons wave-particle interaction EAST tokamak
Online Access:	https://doi.org/10.1088/1741-4326/ad1af7

Similar Items

Toroidal Alfvén eigenmodes excited by energetic electrons in EAST low-density ohmic plasmas
by: Xiang Zhu, et al.
Published: (2024-01-01)

Isotope impact on Alfvén eigenmodes and fast ion transport in DIII-D
by: M.A. Van Zeeland, et al.
Published: (2024-01-01)

Application of non-axisymmetric magnetic field for control of Alfvén eigenmodes in KSTAR
by: Kimin Kim, et al.
Published: (2024-01-01)

First observation of beta-induced Alfvén eigenmode inside the edge magnetic island on the J-TEXT tokamak
by: J. Yang, et al.
Published: (2024-01-01)

The effects of zonal fields on energetic-particle excitations of reversed-shear Alfvén eigenmode: simulation and theory
by: Liu Chen, et al.
Published: (2024-01-01)

Excitation of toroidally localized harmonics of global Alfvén eigenmodes
by: E.D. Fredrickson
Published: (2023-01-01)

Transport and losses of energetic particles in tokamaks in the presence of Alfvén activity using the new full orbit TAPaS code coupled to FAR3d
by: H. Betar, et al.
Published: (2024-01-01)

Simulations of beta-induced Alfvén eigenmode mitigation by off-axis energetic particle distribution
by: Sizhe Duan, et al.
Published: (2024-01-01)

Modelling of energetic particle drive and damping effects on TAEs in AUG experiment with ECCD
by: R. Calado, et al.
Published: (2023-01-01)

Toroidal Alfvén eigenmodes observed in low power JET deuterium–tritium plasmas
by: H.J.C. Oliver, et al.
Published: (2023-01-01)

A model for Alfvén-eigenmode-induced transport of fast ions in stellarators
by: C. Slaby, et al.
Published: (2025-01-01)

Frequency chirping in the early stage of a near-threshold bump-on-tail instability
by: Z.S. Qu, et al.
Published: (2024-01-01)

Observation of modes in the sub-cyclotronic range of frequencies in JET
by: F. Nabais, et al.
Published: (2024-01-01)

Localized 3D control of energetic electron-driven toroidal Alfven eigenmode using resonant magnetic perturbations in the EAST tokamak
by: N. Chu, et al.
Published: (2025-01-01)

Radiative damping of toroidal Alfvén eigenmode in low-shear plasmas
by: B.N. Breizman, et al.
Published: (2025-03-01)

Excitation of toroidal Alfvén eigenmode by energetic particles in DTT and effect of negative triangularity
by: Guangyu Wei, et al.
Published: (2025-01-01)

Elongation effect on beta-induced Alfvén eigenmode
by: Gengxian Li, et al.
Published: (2022-01-01)

Simulation of β-induced Alfvén eigenmode instabilities and mode transition for HL-3 hybrid scenario
by: Yunpeng Zou, et al.
Published: (2025-01-01)

Observation of high frequency Alfvén eigenmodes excited by RF-accelerated minority hydrogen ions in the EAST tokamak
by: Lunan Liu, et al.
Published: (2024-01-01)

Active control of Alfvén eigenmodes by external magnetic perturbations with different spatial spectra
by: J. Gonzalez-Martin, et al.
Published: (2024-01-01)

Energetic particle driven Alfvén eigenmodes and associated energetic particle redistribution in a tokamak burning plasma
by: Y. Todo, et al.
Published: (2025-01-01)

Toroidal modeling of Alfvén eigenmodes excited by runaway electrons in DIII-D and ITER
by: Yueqiang Liu, et al.
Published: (2025-01-01)

Study of fast-ion-driven toroidal Alfvén eigenmodes impacting on the global confinement in TCV L-mode plasmas
by: S. Mazzi, et al.
Published: (2023-09-01)

A perturbative multi-mode model with finite parallel electric field for fast-ion-driven Alfvén eigenmodes
by: C. Slaby, et al.
Published: (2024-01-01)

Simulations of nonlinear interaction between beta-induced Alfvén eigenmode and tearing mode
by: Sizhe Duan, et al.
Published: (2023-01-01)

High-order coupling of shear and sonic continua in JET plasmas
by: Paulo Rodrigues, et al.
Published: (2023-01-01)

Analysis of high frequency Alfvén eigenmodes observed in ASDEX Upgrade plasmas in the presence of RF-accelerated NBI ions
by: R. Ochoukov, et al.
Published: (2023-01-01)

Predictive modeling of Alfvén eigenmode stability in inductive scenarios in JT-60SA
by: R. Coelho, et al.
Published: (2023-11-01)

Cross-scale interaction between microturbulence and meso-scale reversed shear Alfvén eigenmodes in DIII-D plasmas
by: P. Liu, et al.
Published: (2024-01-01)

Global simulations of kinetic-magnetohydrodynamic processes with energetic electrons in tokamak plasmas
by: J. Bao, et al.
Published: (2023-01-01)

Measurements of the polarization of several instabilities in the DIII-D tokamak
by: W.W. Heidbrink, et al.
Published: (2025-01-01)

Analysis of beam ion driven Alfvén eigenmode stability induced by Tungsten contamination in EAST
by: X.H. Wang, et al.
Published: (2023-01-01)

Initial testing of Alfvén eigenmode feedback control with machine-learning observers on DIII-D
by: Andrew Rothstein, et al.
Published: (2024-01-01)

Nonlinear saturation of toroidal Alfvén eigenmodes via ion induced scattering in nonuniform plasmas
by: Zhiwen Cheng, et al.
Published: (2025-01-01)

A new paradigm for fast and repetitive chirping of Alfvén eigenmodes
by: Junyi Cheng, et al.
Published: (2023-01-01)

On nonlinear scattering of drift wave by toroidal Alfvén eigenmode in tokamak plasmas
by: Liu Chen, et al.
Published: (2023-01-01)

Investigation of alpha-particle transport by Alfvén eigenmodes in CFETR using a simplified diffusion model
by: Zhen-Zhen Ren, et al.
Published: (2023-01-01)

An analytical model of how the negative triangularity cuts off the access to the second stable region in tokamak plasmas
by: Y. Zhang, et al.
Published: (2024-01-01)

Modeling of frequency-sweeping Alfvén modes in the TJ-II stellarator
by: A.G. Ghiozzi, et al.
Published: (2024-01-01)

Effects of plasma nonuniformity on toroidal Alfvén eigenmode nonlinear decay
by: Zhiwen Cheng, et al.
Published: (2024-01-01)