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A gyrokinetic global nonlinear particle-in-cell (PIC) method is applied to calculate ion-temperature-gradient (ITG) driven turbulence and the resulting anomalous heat transport in a Theta-pinch. The level of turbulence and transport are strongly decreased by poloidal zonal ExB flows. The radial electric field, Er, leading to these zonal flows is generated by the turbulence. Thus, a magnetic field with a well according to finite-Beta equilibrium and leading to a decrease in the linear growth rates of ITG-modes influences the formation of the radial electric field. The gyrokinetic global nonlinear TORB code has been modified to investigate the consequences for the turbulence level.

Additional information

Authors: SORGE S, Max-Planck-Institut fur Plasmaphysik, EURATOM Association, Teilinstitut Greifswald, Greifswald (DE)
Bibliographic Reference: An article published in: Plasma Physics and controlled Fusion 46 (2004) pp. 535-549
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