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Title: Hybrid simulation of fishbone instabilities in the EAST tokamak

Abstract

Hybrid simulations with the global kinetic-magnetohydrodynamic (MHD) code M3D-K have been carried out to investigate the linear stability and nonlinear dynamics of beam-driven fishbone in the experimental advanced superconducting tokamak (EAST) experiment. Linear simulations show that a low frequency fishbone instability is excited at experimental value of beam ion pressure. The mode is mainly driven by low energy beam ions via precessional resonance. Our results are consistent with the experimental measurement with respect to mode frequency and mode structure. When the beam ion pressure is increased to exceed a critical value, the low frequency mode transits to a beta-induced Alfven eigenmode (BAE) with much higher frequency. This BAE is driven by higher energy beam ions. Nonlinear simulations show that the frequency of the low frequency fishbone chirps up and down with corresponding hole-clump structures in phase space, consistent with the Berk-Breizman theory. In addition to the low frequency mode, the high frequency BAE is excited during the nonlinear evolution. Furthermore, for the transient case of beam pressure fraction where the low and high frequency modes are simultaneously excited in the linear phase, only one dominant mode appears in the nonlinear phase with frequency jumps up and down during nonlinear evolution.

Authors:
 [1];  [2]; ORCiD logo [3];  [1]; ORCiD logo [1];  [1]
  1. Chinese Academy of Sciences (CAS), Hefei (China). Inst. of Plasma Physics
  2. Dalian Univ. of Technology (China). Key Lab. of Materials Modification by Laser, Ion and Electron Beams
  3. Zhejiang Univ., Hangzhou (China). Inst. for Fusion Theory and Simulation; Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1378089
Grant/Contract Number:  
YZJJ201510; 11505022; 11605245; AC02-09CH11466
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Volume: 57; Journal Issue: 11; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; fishbone instability; EAST; frequency chirping; hole-clump formation; wave-particle resonance; beam-driven instabilities; clump pair creation; internal kink mode; diii-d tokamak; plasma; ions; reconstruction

Citation Formats

Shen, Wei, Wang, Feng, Fu, G. Y., Xu, Liqing, Li, Guoqiang, and Liu, Chengyue. Hybrid simulation of fishbone instabilities in the EAST tokamak. United States: N. p., 2017. Web. doi:10.1088/1741-4326/aa7f9c.
Shen, Wei, Wang, Feng, Fu, G. Y., Xu, Liqing, Li, Guoqiang, & Liu, Chengyue. Hybrid simulation of fishbone instabilities in the EAST tokamak. United States. https://doi.org/10.1088/1741-4326/aa7f9c
Shen, Wei, Wang, Feng, Fu, G. Y., Xu, Liqing, Li, Guoqiang, and Liu, Chengyue. Fri . "Hybrid simulation of fishbone instabilities in the EAST tokamak". United States. https://doi.org/10.1088/1741-4326/aa7f9c. https://www.osti.gov/servlets/purl/1378089.
@article{osti_1378089,
title = {Hybrid simulation of fishbone instabilities in the EAST tokamak},
author = {Shen, Wei and Wang, Feng and Fu, G. Y. and Xu, Liqing and Li, Guoqiang and Liu, Chengyue},
abstractNote = {Hybrid simulations with the global kinetic-magnetohydrodynamic (MHD) code M3D-K have been carried out to investigate the linear stability and nonlinear dynamics of beam-driven fishbone in the experimental advanced superconducting tokamak (EAST) experiment. Linear simulations show that a low frequency fishbone instability is excited at experimental value of beam ion pressure. The mode is mainly driven by low energy beam ions via precessional resonance. Our results are consistent with the experimental measurement with respect to mode frequency and mode structure. When the beam ion pressure is increased to exceed a critical value, the low frequency mode transits to a beta-induced Alfven eigenmode (BAE) with much higher frequency. This BAE is driven by higher energy beam ions. Nonlinear simulations show that the frequency of the low frequency fishbone chirps up and down with corresponding hole-clump structures in phase space, consistent with the Berk-Breizman theory. In addition to the low frequency mode, the high frequency BAE is excited during the nonlinear evolution. Furthermore, for the transient case of beam pressure fraction where the low and high frequency modes are simultaneously excited in the linear phase, only one dominant mode appears in the nonlinear phase with frequency jumps up and down during nonlinear evolution.},
doi = {10.1088/1741-4326/aa7f9c},
url = {https://www.osti.gov/biblio/1378089}, journal = {Nuclear Fusion},
issn = {0029-5515},
number = 11,
volume = 57,
place = {United States},
year = {2017},
month = {8}
}

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Works referenced in this record:

Chapter 5: Physics of energetic ions
journal, June 2007


Study of High-Beta Magnetohydrodynamic Modes and Fast-Ion Losses in PDX
journal, March 1983


Excitation of Internal Kink Modes by Trapped Energetic Beam Ions
journal, March 1984


Theoretical Model of Fishbone Oscillations in Magnetically Confined Plasmas
journal, November 1986


Tangential Neutral-Beam-Driven Instabilities in the Princeton Beta Experiment
journal, August 1986


The fishbone instability in the DIII-D tokamak
journal, June 1990


Fishbone activity in JET
journal, April 1991


Fast detection of 14 MeV neutrons on the TFTR neutron collimator
journal, February 1996


The fishbone instability in ASDEX Upgrade
journal, June 1998


Features of ion and electron fishbone instabilities on HL-2A
journal, July 2010


Fishbone activity in experimental advanced superconducting tokamak neutral beam injection plasma
journal, December 2015


Destabilization of the internal kink by energetic-circulating ions
journal, May 1993


Bounce precession fishbones in the national spherical torus experiment
journal, October 2003


Macroscopic plasma oscillation bursts (fishbones) resulting from high-energy populations
journal, January 1988


The nonlinear saturation of beam‐driven instabilities: Theory and experiment
journal, July 1993


Nonlinear modeling of kinetic plasma instabilities
journal, May 1999


Nonlinear magnetohydrodynamical effects in precessional fishbone oscillations
journal, January 2002


Linear stability and nonlinear dynamics of the fishbone mode in spherical tokamaks
journal, October 2013


Plasma simulation studies using multilevel physics models
journal, May 1999


Three-dimensional modeling of the sawtooth instability in a small tokamak
journal, May 2007


Nonlinear simulation of toroidal Alfvén eigenmode with source and sink
journal, April 2010


Hybrid simulation of energetic particle effects on tearing modes in tokamak plasmas
journal, July 2012


Simulation of non-resonant internal kink mode with toroidal rotation in the National Spherical Torus Experiment
journal, July 2013


M3D-K simulations of sawteeth and energetic particle transport in tokamak plasmas
journal, September 2014


Nonlinear hybrid simulation of internal kink with beam ion effects in DIII-D
journal, April 2015


Hybrid simulation of toroidal Alfvén eigenmode on the National Spherical Torus Experiment
journal, April 2015


Reconstruction of current profile parameters and plasma shapes in tokamaks
journal, November 1985


MHD Equilibrium Reconstruction in the DIII-D Tokamak
journal, October 2005


The tokamak Monte Carlo fast ion module NUBEAM in the National Transport Code Collaboration library
journal, June 2004


Fast particle stabilisation
journal, November 1991


A numerical study of the high‐ n shear Alfvén spectrum gap and the high‐ n gap mode
journal, November 1992


Solution of the drift‐kinetic equation for global plasma modes and finite particle orbit widths
journal, March 1994


The effects of sheared toroidal plasma rotation on the internal kink mode in the banana regime
journal, October 2000


Spontaneous hole-clump pair creation in weakly unstable plasmas
journal, September 1997


Spontaneous hole–clump pair creation
journal, August 1999


Redistribution of Suprathermal Electrons due to Fishbone Frequency Jumps
journal, April 2009


    Works referencing / citing this record:

    Dynamic evolution of resistive kink mode with electron diamagnetic drift in tokamaks
    journal, April 2019


    Modeling of the beam excited fishbone mode in EAST
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    Hybrid simulations of fishbone instabilities and Alfvén eigenmodes in DIII-D tokamak
    journal, December 2018


    Stability of Alfvén eigenmodes in the China Fusion Engineering Test Reactor
    journal, October 2019


    Summary of the 8th Asia-Pacific Transport Working Group (APTWG) Meeting
    journal, January 2019