skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Particle transport due to energetic-particle-driven geodesic acoustic modes

Abstract

The transport of particles in the presence of energetic geodesic acoustic modes (EGAMs) is analysed by means of full-f global gyro-kinetic simulations, using the multi-species version of the code and a test particle tracking post-treatment, which solves the equations of motion of passive gyro-centres embedded in the self-consistent EGAM potential obtained from the simulations. It is found that EGAMs induce the transport of particles, which eventually results in counter-passing particle losses modulated at the EGAM frequency. A detailed analysis of the trajectories of the test gyro-centres is performed and evidence of the interaction between the EGAM island and the region of magnetically trapped particles (trapping cone) is provided. In particular, we report for the first time on the complex interaction between the stochastic separatrix of the EGAM island and the X-point of the trapping cone, creating a channel for the transport of particles from the $$v_{||} < 0$$ to the $$v_{||} > 0$$ regions. Therefore, for the cases analysed in this work, the co-injection of energetic particles might lead to a significant reduction of EGAM-induced losses. This result opens up new perspectives for further studies of the selection of energetic particle injection in order to minimize the losses due to EGAMs.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [3]; ORCiD logo [3];  [3];  [3];  [3];  [1]
  1. Aix-Marseille Univ., Marseille (France)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Alternative Energies and Atomic Energy Commission (CEA), Saint-Paul-lez-Durance (France)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1649635
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Volume: 58; Journal Issue: 10; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Zarzoso, D., Del-Castillo-Negrete, Diego, Escande, D. F., Sarazin, Y., Garbet, X., Grandgirard, V., Passeron, C., Latu, G, and Benkadda, S.. Particle transport due to energetic-particle-driven geodesic acoustic modes. United States: N. p., 2018. Web. https://doi.org/10.1088/1741-4326/aad785.
Zarzoso, D., Del-Castillo-Negrete, Diego, Escande, D. F., Sarazin, Y., Garbet, X., Grandgirard, V., Passeron, C., Latu, G, & Benkadda, S.. Particle transport due to energetic-particle-driven geodesic acoustic modes. United States. https://doi.org/10.1088/1741-4326/aad785
Zarzoso, D., Del-Castillo-Negrete, Diego, Escande, D. F., Sarazin, Y., Garbet, X., Grandgirard, V., Passeron, C., Latu, G, and Benkadda, S.. Wed . "Particle transport due to energetic-particle-driven geodesic acoustic modes". United States. https://doi.org/10.1088/1741-4326/aad785. https://www.osti.gov/servlets/purl/1649635.
@article{osti_1649635,
title = {Particle transport due to energetic-particle-driven geodesic acoustic modes},
author = {Zarzoso, D. and Del-Castillo-Negrete, Diego and Escande, D. F. and Sarazin, Y. and Garbet, X. and Grandgirard, V. and Passeron, C. and Latu, G and Benkadda, S.},
abstractNote = {The transport of particles in the presence of energetic geodesic acoustic modes (EGAMs) is analysed by means of full-f global gyro-kinetic simulations, using the multi-species version of the code and a test particle tracking post-treatment, which solves the equations of motion of passive gyro-centres embedded in the self-consistent EGAM potential obtained from the simulations. It is found that EGAMs induce the transport of particles, which eventually results in counter-passing particle losses modulated at the EGAM frequency. A detailed analysis of the trajectories of the test gyro-centres is performed and evidence of the interaction between the EGAM island and the region of magnetically trapped particles (trapping cone) is provided. In particular, we report for the first time on the complex interaction between the stochastic separatrix of the EGAM island and the X-point of the trapping cone, creating a channel for the transport of particles from the $v_{||} < 0$ to the $v_{||} > 0$ regions. Therefore, for the cases analysed in this work, the co-injection of energetic particles might lead to a significant reduction of EGAM-induced losses. This result opens up new perspectives for further studies of the selection of energetic particle injection in order to minimize the losses due to EGAMs.},
doi = {10.1088/1741-4326/aad785},
journal = {Nuclear Fusion},
number = 10,
volume = 58,
place = {United States},
year = {2018},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

A description of the full-particle-orbit-following SPIRAL code for simulating fast-ion experiments in tokamaks
journal, January 2013


Fully kinetic description of the linear excitation and nonlinear saturation of fast-ion-driven geodesic acoustic mode instability
journal, February 2012

  • Zarzoso, D.; Garbet, X.; Sarazin, Y.
  • Physics of Plasmas, Vol. 19, Issue 2
  • DOI: 10.1063/1.3680633

Manifestations of the geodesic acoustic mode driven by energetic ions in tokamaks
journal, March 2016

  • Kolesnichenko, Ya I.; Lutsenko, V. V.; Yakovenko, Yu V.
  • Plasma Physics and Controlled Fusion, Vol. 58, Issue 4
  • DOI: 10.1088/0741-3335/58/4/045024

Infinite resonance overlap: a natural limit for Hamiltonian chaos
journal, January 1993


Relation between energetic and standard geodesic acoustic modes
journal, September 2014

  • Girardo, Jean-Baptiste; Zarzoso, David; Dumont, Rémi
  • Physics of Plasmas, Vol. 21, Issue 9
  • DOI: 10.1063/1.4895479

Energetic-Particle-Induced Geodesic Acoustic Mode
journal, October 2008


Observation and explanation of the JET chirping mode
journal, October 2006


Nonlinear categorization of the energetic-beam-driven instability with drag and diffusion
journal, September 2012


Intense Geodesic Acousticlike Modes Driven by Suprathermal Ions in a Tokamak Plasma
journal, October 2008


Numerical validation of the electromagnetic gyrokinetic code NEMORB on global axisymmetric modes
journal, October 2014


Interplay between fast ions and turbulence in magnetic fusion plasmas
journal, November 2013


Scintillator based detector for fast-ion losses induced by magnetohydrodynamic instabilities in the ASDEX upgrade tokamak
journal, May 2009

  • García-Muñoz, M.; Fahrbach, H. -U.; Zohm, H.
  • Review of Scientific Instruments, Vol. 80, Issue 5
  • DOI: 10.1063/1.3121543

Impact of Energetic-Particle-Driven Geodesic Acoustic Modes on Turbulence
journal, March 2013


Explanation of the JET n = 0 chirping mode
journal, September 2006


A global collisionless PIC code in magnetic coordinates
journal, September 2007


A universal instability of many-dimensional oscillator systems
journal, May 1979


Hole-Clump Pair Creation in the Evolution of Energetic-Particle-Driven Geodesic Acoustic Modes
journal, April 2013


Fast excitation of EGAM by NBI
journal, March 2010


A two-dimensional interpolation function for irregularly-spaced data
conference, January 1968


Analytic dispersion relation of energetic particle driven geodesic acoustic modes and simulations with NEMORB
journal, September 2014


A 5D gyrokinetic full- f global semi-Lagrangian code for flux-driven ion turbulence simulations
journal, October 2016


Fully nonlinear phenomenology of the Berk–Breizman augmentation of the Vlasov–Maxwell system
journal, March 2003

  • Vann, R. G. L.; Dendy, R. O.; Rowlands, G.
  • Physics of Plasmas, Vol. 10, Issue 3
  • DOI: 10.1063/1.1539854

Energetic Geodesic Acoustic Modes Associated with Two-Stream-like Instabilities in Tokamak Plasmas
journal, March 2016


Saturation of energetic-particle-driven geodesic acoustic modes due to wave–particle nonlinearity
journal, December 2017


Beam ion losses due to energetic particle geodesic acoustic modes
journal, November 2012


A branch of energetic-particle driven geodesic acoustic modes due to magnetic drift resonance
journal, October 2016

  • Sasaki, M.; Kasuya, N.; Itoh, K.
  • Physics of Plasmas, Vol. 23, Issue 10
  • DOI: 10.1063/1.4963397

Enhanced Localized Energetic-Ion Losses Resulting from Single-Pass Interactions with Alfvén Eigenmodes
journal, February 2013


Effects of passing energetic particles on geodesic acoustic mode
journal, October 2014

  • Ren, Haijun; Dong, Chao
  • Physics of Plasmas, Vol. 21, Issue 10
  • DOI: 10.1063/1.4896713

Nonlinear interaction between energetic particles and turbulence in gyro-kinetic simulations and impact on turbulence properties
journal, June 2017


Geodesic Acoustic Waves in Hydromagnetic Systems
journal, January 1968


Energy channeling from energetic particles to bulk ions via beam-driven geodesic acoustic modes—GAM channeling
journal, June 2011


    Works referencing / citing this record:

    Geodesic modes driven by untrapped resonances of NB energetic ions in tokamaks
    journal, October 2019

    • Elfimov, A. G.; Galvão, R. M. O.; Gorelenkov, N. N.
    • Physics of Plasmas, Vol. 26, Issue 10
    • DOI: 10.1063/1.5110175

    Theoretical studies and simulations of mode structure symmetry breaking in tokamak plasmas in the presence of energetic particles
    journal, March 2019


    Simulation of energetic particle driven geodesic acoustic modes and the energy channeling in the Large Helical Device plasmas
    journal, August 2019