Transport barrier for the radial diffusion due to the ExB drift motion of guiding centers in cylindrical confinement geometry

Abstract : We consider the radial transport of test particles due to the ExB drift motion in the guiding center approximation. Using an explicit expression to modify the electrostatic potential, we show that it is possible to construct a transport barrier which suppresses radial transport. We propose an algorithm for the implementation of this local modification computed from an electrostatic potential known on a spatio-temporal grid. The number of particles which escape the inner region defined by the barrier measures the efficiency of the control. We show that the control is robust by showing a significant reduction of radial transport, when applied with a reduced number of probes aligned on a circle.
Liste complète des métadonnées

Cited literature [11 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00542733
Contributor : Olivier Izacard <>
Submitted on : Friday, October 7, 2011 - 5:25:03 AM
Last modification on : Monday, October 1, 2018 - 4:02:58 PM
Document(s) archivé(s) le : Sunday, January 8, 2012 - 2:21:15 AM

Files

Control.pdf
Files produced by the author(s)

Identifiers

Citation

Olivier Izacard, Natalia Tronko, Cristel Chandre, Guido Ciraolo, Michel Vittot, et al.. Transport barrier for the radial diffusion due to the ExB drift motion of guiding centers in cylindrical confinement geometry. Plasma Physics and Controlled Fusion, IOP Publishing, 2011, 53 (12), pp.125008. ⟨10.1088/0741-3335/53/12/125008⟩. ⟨hal-00542733v5⟩

Share

Metrics

Record views

520

Files downloads

72