Bulletin of the American Physical Society
49th Annual Meeting of the Division of Plasma Physics
Volume 52, Number 11
Monday–Friday, November 12–16, 2007; Orlando, Florida
Session GP8: Poster Session III: Turbulence, Transport, and NL Processes; Fast Ignition and Laser-Plasma Interactions; Divertors, Edge Physics and Fueling; MHD Theory, Heating and Current Drive; Simulation: MHD; Optimal Helicon Source Performance
Tuesday, November 13, 2007
Rosen Centre Hotel Room: Grand Ballroom, 9:30am - 12:30pm
Abstract ID: BAPS.2007.DPP.GP8.113
Abstract: GP8.00113 : Critical Toroidal Rotation Profile for Resistive Wall Modes in Tokamaks*
Preview Abstract Abstract
(University of Wisconsin)
(Oak Ridge National Labpratory)
It is known that resistive wall modes in tokamaks can be stabilized by toroidal plasma rotation. The critical toroidal rotation speed is reduced when the enhanced plasma inertia is included in the polarization current density. Here, we develop a model to calculate the critical rotation profile when toroidal plasma rotation is actively controlled. This is accomplished by including the neoclassical dissipation mechanism associated with the perturbed parallel plasma viscosity, and its corresponding inertia enhancement factor. It is illustrated that the important quantity is the toroidal rotation profile and is not necessarily the toroidal plasma rotation speed at a particular radius.
*This work was supported by US DOE under Grant No. DE-FG02-02ER54679 and No. DE-FG02-01ER54619 with the University of Wisconsin.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.DPP.GP8.113
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