Physics of runaway electrons in tokamaks

BN Breizman, P Aleynikov, EM Hollmann… - Nuclear …, 2019 - iopscience.iop.org
Of all electrons, runaway electrons have long been recognized in the fusion community as a
distinctive population. They now attract special attention as a part of ITER mission …

Stability optimization of energetic particle driven modes in nuclear fusion devices: the FAR3d gyro-fluid code

J Varela, D Spong, L Garcia, Y Ghai, J Ortiz… - Frontiers in …, 2024 - frontiersin.org
The development of reduced models provide efficient methods that can be used to perform
short term experimental data analysis or narrow down the parametric range of more …

Observation of rapid frequency chirping instabilities driven by runaway electrons in a tokamak

A Lvovskiy, WW Heidbrink, C Paz-Soldan… - Nuclear …, 2019 - iopscience.iop.org
We report the first observation of chirping instabilities driven by runaway electrons (REs) in a
tokamak. The instabilities are accessed during the post-disruption RE beam stage in a low …

Simulation of Alfvén eigenmodes destabilized by energetic electrons in tokamak plasmas

J Wang, Y Todo, H Wang, ZX Wang - Nuclear Fusion, 2020 - iopscience.iop.org
Alfvén eigenmodes (AEs) driven by energetic electrons were investigated via hybrid
simulations of an MHD fluid interacting with energetic electrons. The investigation focused …

Recent DIII-D advances in runaway electron measurement and model validation

C Paz-Soldan, NW Eidietis, EM Hollmann… - Nuclear …, 2019 - iopscience.iop.org
Novel measurements and modeling of runaway electron (RE) dynamics in DIII-D have
resolved experimental discrepancies and validated predictions for ITER, improving …

Analysis of beam ion driven Alfvén eigenmode stability induced by Tungsten contamination in EAST

XH Wang, J Huang, J Varela, HL Zhao… - Nuclear …, 2023 - iopscience.iop.org
Alfvén eigenmodes (AE) activity is observed in the EAST high β N and low BT discharge
93910, operation scenario dedicated to explore the ITER baseline scenario. AEs are …

Beta-induced Alfvén eigenmodes destabilized by resonant magnetic perturbations in the J-TEXT tokamak

L Liu, G Zhuang, Q Hu, N Wang, Y Zou, L Zhu… - Nuclear …, 2019 - iopscience.iop.org
Investigations of beta-induced Alfvén eigenmodes (BAEs) destabilized by resonant
magnetic perturbations (RMPs) have been conducted on the J-TEXT tokamak. In the Ohmic …

Toroidal field and q95 scalings on error field penetration in EAST

HH Wang, YW Sun, TH Shi, S Gu, YQ Liu, Q Ma… - Nuclear …, 2020 - iopscience.iop.org
Toroidal field and q95 scalings on error field penetration in EAST - IOPscience This site uses
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Multiple Alfvén eigenmodes induced by energetic electrons and nonlinear mode couplings in EAST radio-frequency heated H-mode plasmas

N Zhao, J Bao, W Chen, TH Shi, ZX Wang, N Yan… - Nuclear …, 2021 - iopscience.iop.org
Multiple electromagnetic coherent modes with frequencies f∼ 20–300 kHz and toroidal
mode numbers n= 1 and n= 2 have been observed and investigated in radio-frequency …

The advance of magnetic diagnostics system in support of EAST long-pulsed operation

C Dalong, S Biao, SHI Tonghui… - Plasma Science and …, 2023 - iopscience.iop.org
In EAST long-pulsed discharge (hundreds of seconds), electric magnetic diagnosis (EMD) is
very important, since EMD not only monitors tokamak security status but also provides …