Full f gyrokinetic simulation of FT-2 tokamak plasma

T. Kiviniemi (Corresponding Author), Jukka Heikkinen, S. Janhunen, S. Henriksson

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

A direct implicit ion polarization gyrokinetic full f particle-in-cell approach is implemented with kinetic electrons in global tokamak transport simulations. The method is applicable for calculations of rapid transients and steep gradients in the plasma, which is made feasible by recording the charge density change by the ion polarization drift together with the particle advancing. The code has been successfully validated against the linear and nonlinear predictions of the unstable mode growth rates and frequencies and their turbulent saturation level. A first global validation of the neoclassical radial electric field in the presence of turbulence for a heated collisional tokamak plasma is obtained. The neoclassical radial electric field together with the related geodesic acoustic mode oscillations is found to regulate the turbulence and heat and particle diffusion levels in a large aspect ratio tokamak at low plasma current.
Original languageEnglish
Pages (from-to)A327-A333
JournalPlasma Physics and Controlled Fusion
Volume48
Issue number5A
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

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turbulence
Plasmas
linear prediction
particle diffusion
electric fields
plasma currents
Turbulence
polarization
Electric fields
Polarization
aspect ratio
ions
simulation
recording
Ions
Charge density
saturation
heat
gradients
oscillations

Cite this

Kiviniemi, T., Heikkinen, J., Janhunen, S., & Henriksson, S. (2006). Full f gyrokinetic simulation of FT-2 tokamak plasma. Plasma Physics and Controlled Fusion, 48(5A), A327-A333. https://doi.org/10.1088/0741-3335/48/5A/S32
Kiviniemi, T. ; Heikkinen, Jukka ; Janhunen, S. ; Henriksson, S. / Full f gyrokinetic simulation of FT-2 tokamak plasma. In: Plasma Physics and Controlled Fusion. 2006 ; Vol. 48, No. 5A. pp. A327-A333.
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Kiviniemi, T, Heikkinen, J, Janhunen, S & Henriksson, S 2006, 'Full f gyrokinetic simulation of FT-2 tokamak plasma', Plasma Physics and Controlled Fusion, vol. 48, no. 5A, pp. A327-A333. https://doi.org/10.1088/0741-3335/48/5A/S32

Full f gyrokinetic simulation of FT-2 tokamak plasma. / Kiviniemi, T. (Corresponding Author); Heikkinen, Jukka; Janhunen, S.; Henriksson, S.

In: Plasma Physics and Controlled Fusion, Vol. 48, No. 5A, 2006, p. A327-A333.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Kiviniemi, T.

AU - Heikkinen, Jukka

AU - Janhunen, S.

AU - Henriksson, S.

PY - 2006

Y1 - 2006

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AB - A direct implicit ion polarization gyrokinetic full f particle-in-cell approach is implemented with kinetic electrons in global tokamak transport simulations. The method is applicable for calculations of rapid transients and steep gradients in the plasma, which is made feasible by recording the charge density change by the ion polarization drift together with the particle advancing. The code has been successfully validated against the linear and nonlinear predictions of the unstable mode growth rates and frequencies and their turbulent saturation level. A first global validation of the neoclassical radial electric field in the presence of turbulence for a heated collisional tokamak plasma is obtained. The neoclassical radial electric field together with the related geodesic acoustic mode oscillations is found to regulate the turbulence and heat and particle diffusion levels in a large aspect ratio tokamak at low plasma current.

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DO - 10.1088/0741-3335/48/5A/S32

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JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

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ER -