Gyrokinetic particle simulations of the effects of compressional magnetic perturbations on driftAlfvenic instabilities in tokamaks
Abstract
The compressional component of magnetic perturbation δB _{} to can play an important role in driftAlfvenic instabilities in tokamaks, especially as the plasma β increases (β is the ratio of kinetic pressure to magnetic pressure). In this work, we have formulated a gyrokinetic particle simulation model incorporating δB _{}, and verified the model in kinetic Alfven wave simulations using the Gyrokinetic Toroidal Code in slab geometry. Simulations of driftAlfvenic instabilities in tokamak geometry shows that the kinetic ballooning mode (KBM) growth rate decreases more than 20% when δB _{} is neglected for β _{e} = 0.02, and that δB _{} to has stabilizing effects on the ion temperature gradient instability, but negligible effects on the collisionless trapped electron mode. Lastly, the KBM growth rate decreases about 15% when equilibrium current is neglected.
 Authors:

 Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States). Dept. of Astrophysical Sciences
 Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
 Saint Michael's College, Colchester, VT (United States). Dept. of Physics
 Publication Date:
 Research Org.:
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC24)
 OSTI Identifier:
 1398344
 Alternate Identifier(s):
 OSTI ID: 1374674
 Grant/Contract Number:
 AC0209CH11466; FG0207ER46372; SC0014032
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Physics of Plasmas
 Additional Journal Information:
 Journal Volume: 24; Journal Issue: 8; Journal ID: ISSN 1070664X
 Publisher:
 American Institute of Physics (AIP)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; electromagneticwaves; general geometry; plasma; equations
Citation Formats
Dong, Ge, Bao, Jian, Bhattacharjee, Amitava, Brizard, Alain, Lin, Zhihong, and Porazik, Peter. Gyrokinetic particle simulations of the effects of compressional magnetic perturbations on driftAlfvenic instabilities in tokamaks. United States: N. p., 2017.
Web. doi:10.1063/1.4997788.
Dong, Ge, Bao, Jian, Bhattacharjee, Amitava, Brizard, Alain, Lin, Zhihong, & Porazik, Peter. Gyrokinetic particle simulations of the effects of compressional magnetic perturbations on driftAlfvenic instabilities in tokamaks. United States. doi:10.1063/1.4997788.
Dong, Ge, Bao, Jian, Bhattacharjee, Amitava, Brizard, Alain, Lin, Zhihong, and Porazik, Peter. Thu .
"Gyrokinetic particle simulations of the effects of compressional magnetic perturbations on driftAlfvenic instabilities in tokamaks". United States. doi:10.1063/1.4997788. https://www.osti.gov/servlets/purl/1398344.
@article{osti_1398344,
title = {Gyrokinetic particle simulations of the effects of compressional magnetic perturbations on driftAlfvenic instabilities in tokamaks},
author = {Dong, Ge and Bao, Jian and Bhattacharjee, Amitava and Brizard, Alain and Lin, Zhihong and Porazik, Peter},
abstractNote = {The compressional component of magnetic perturbation δB to can play an important role in driftAlfvenic instabilities in tokamaks, especially as the plasma β increases (β is the ratio of kinetic pressure to magnetic pressure). In this work, we have formulated a gyrokinetic particle simulation model incorporating δB, and verified the model in kinetic Alfven wave simulations using the Gyrokinetic Toroidal Code in slab geometry. Simulations of driftAlfvenic instabilities in tokamak geometry shows that the kinetic ballooning mode (KBM) growth rate decreases more than 20% when δB is neglected for βe = 0.02, and that δB to has stabilizing effects on the ion temperature gradient instability, but negligible effects on the collisionless trapped electron mode. Lastly, the KBM growth rate decreases about 15% when equilibrium current is neglected.},
doi = {10.1063/1.4997788},
journal = {Physics of Plasmas},
number = 8,
volume = 24,
place = {United States},
year = {2017},
month = {8}
}
Web of Science
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