Effect of externally imposed and self-generated flows on turbulence and magnetohydrodynamic activity in tokamak plasmas

Journal Article · Mon May 01 00:00:00 EDT 2000 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.874000· OSTI ID:20216049

Leboeuf, J -N ^[1]; Dawson, J M ^[1]; Decyk, V K ^[1]; Kissick, M W ^[1]; Rhodes, T L ^[1]; Sydora, R D ^[1]

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1. Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095-1547 (United States)

The effects of externally imposed and self-generated poloidal flows on turbulence and magnetohydrodynamic (MHD) activity are examined in the context of the possible Electric Tokamak (ET) [Phys. Plasmas 6, 4722 (1999)] plasmas and (circularized) DIII-D-like [Fusion Technol. 8, 441 (1985)] discharges. Global gyrokinetic particle simulations and reduced MHD calculations respectively show that ion temperature gradient driven turbulence (ITGDT) and resistive internal kink MHD activity can be reduced and/or suppressed with experimentally achievable externally imposed flows for possible ET start-up plasmas. Global gyrokinetic particle simulations of ITGDT also serve to demonstrate that self-generated flows are necessary to yield experimentally relevant radial correlation lengths in the case of DIII-D-like discharges. (c) 2000 American Institute of Physics.

• OSTI ID: 20216049
• Journal Information: Physics of Plasmas, Vol. 7, Issue 5; Other Information: PBD: May 2000; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
TOKAMAK DEVICES
TURBULENCE
PLASMA SIMULATION
PLASMA CONFINEMENT
EXPERIMENTAL DATA
THEORETICAL DATA