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Gyrokinetic study of electromagnetic effects on toroidal momentum transport in tokamak plasmas
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10.1063/1.3609841
/content/aip/journal/pop/18/7/10.1063/1.3609841
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/7/10.1063/1.3609841
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Ballooning dependence of the real (a) and imaginary part (b) of the electrostatic potential φ as well as the parallel component of the vector potential for [(c), (d)], respectively. The GA-std case has been used.

Image of FIG. 2.
FIG. 2.

(Color online) Behavior of the Prandtl number χφ i (a) and the Coriolis pinch number RV φφ (b) with the corresponding wave vectors (c) and (d), respectively, as a function of β e .

Image of FIG. 3.
FIG. 3.

(Color online) Electromagnetic behavior of γ (open symbols) and ω r (full symbols (a), parallel wavenumbers for both (, , open symbols) and (, , full symbols (b), Prandtl number χφ i (c) and Coriolis pinch number RV φφ (d) for different values of the safety factor q, respectively. In (e) and (f), the Prandtl number and the Coriolis pinch are shown versus q 2β e .

Image of FIG. 4.
FIG. 4.

(Color online) Theoretical model using the gyrokinetic formalism to compute the βe-behavior of the Prandtl number (a) and the Coriolis pinch (c) for the GA-std case. The numerical values for , , , γ, and ωr obtained by GYRO have been used. In (b) and (d), the corresponding simulation results for Prandtl number and Coriolis pinch are shown.

Image of FIG. 5.
FIG. 5.

(Color online) Prandtl number and Coriolis pinch as a function of for different values of βe in the GA-std case. Dashed and full lines denote linear and quadratic (see text) fits to the numerical results on the Prandtl number and the Coriolis pinch obtained with GYRO, respectively.

Image of FIG. 6.
FIG. 6.

(Color online) Prandtl number (a) and Coriolis pinch (b) as a function of βe for linear simulations of an ASDEX-Upgrade hybrid scenario case (parameters see text). The grey shaded area indicates values of βe, which are typical for H-mode plasmas in hybrid scenario operation in present day tokamaks.

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/content/aip/journal/pop/18/7/10.1063/1.3609841
2011-07-26
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Gyrokinetic study of electromagnetic effects on toroidal momentum transport in tokamak plasmas
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/7/10.1063/1.3609841
10.1063/1.3609841
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