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Title: Nonlinear Generation of Zonal Fields by the Beta-Induced Alfvén Eigenmode in Tokamak

Abstract

The zonal fields effect on the beta-induced Alfvén eigenmode (BAE) destabilized by the energetic particles in toroidal plasmas is studied through the gyrokinetic particle simulations. It is found that the localized zonal fields with a negative value around the mode rational surface are generated by the nonlinear BAE. In the weakly driven case, the zonal fields with a strong geodesic acoustic mode (GAM) component have weak effects on the nonlinear BAE evolution. In the strongly driven case, the zonal fields are dominated by a more significant zero frequency component and have stronger effects on the nonlinear BAE evolution.

Authors:
 [1];  [2]
  1. Peking Univ., Beijing (China). Fusion Simulation Center
  2. Peking Univ., Beijing (China). Fusion Simulation Center; Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
SciDAC GSEP Center; ITER
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1565194
Resource Type:
Accepted Manuscript
Journal Name:
Plasma Science and Technology
Additional Journal Information:
Journal Volume: 15; Journal Issue: 10; Journal ID: ISSN 1009-0630
Publisher:
IOPScience
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Physics; plasma Alfven waves; plasma magnetohydrodynamics; plasma simulation

Citation Formats

Zhang, Huasen, and Lin, Zhihong. Nonlinear Generation of Zonal Fields by the Beta-Induced Alfvén Eigenmode in Tokamak. United States: N. p., 2013. Web. doi:10.1088/1009-0630/15/10/02.
Zhang, Huasen, & Lin, Zhihong. Nonlinear Generation of Zonal Fields by the Beta-Induced Alfvén Eigenmode in Tokamak. United States. doi:10.1088/1009-0630/15/10/02.
Zhang, Huasen, and Lin, Zhihong. Tue . "Nonlinear Generation of Zonal Fields by the Beta-Induced Alfvén Eigenmode in Tokamak". United States. doi:10.1088/1009-0630/15/10/02. https://www.osti.gov/servlets/purl/1565194.
@article{osti_1565194,
title = {Nonlinear Generation of Zonal Fields by the Beta-Induced Alfvén Eigenmode in Tokamak},
author = {Zhang, Huasen and Lin, Zhihong},
abstractNote = {The zonal fields effect on the beta-induced Alfvén eigenmode (BAE) destabilized by the energetic particles in toroidal plasmas is studied through the gyrokinetic particle simulations. It is found that the localized zonal fields with a negative value around the mode rational surface are generated by the nonlinear BAE. In the weakly driven case, the zonal fields with a strong geodesic acoustic mode (GAM) component have weak effects on the nonlinear BAE evolution. In the strongly driven case, the zonal fields are dominated by a more significant zero frequency component and have stronger effects on the nonlinear BAE evolution.},
doi = {10.1088/1009-0630/15/10/02},
journal = {Plasma Science and Technology},
number = 10,
volume = 15,
place = {United States},
year = {2013},
month = {10}
}

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