Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak
de Meijere, C. A.; Coda, S.; Huang, Z.; Vermare, L.; Vernay, T.; Vuille, V.; Brunner, S.; Dominski, J.; Hennequin, P.; Kraemer-Flecken, A.; Merlo, G.; Porte, L.; Villard, L.
2014

Abstract

The geodesic acoustic mode (GAM) is a coherently oscillating zonal flow that may regulate turbulence in toroidal plasmas. Uniquely, the complete poloidal and toroidal structure of the magnetic component of the turbulence-driven GAM has been mapped in the TCV tokamak. Radially localized measurements of the fluctuating density, ECE radiative temperature and poloidal flow show that the GAM is a fully coherent, radially propagating wave. These observations are consistent with electrostatic, gyrokinetic simulations.

Details

Title Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak
Author(s) de Meijere, C. A. ; Coda, S. ; Huang, Z. ; Vermare, L. ; Vernay, T. ; Vuille, V. ; Brunner, S. ; Dominski, J. ; Hennequin, P. ; Kraemer-Flecken, A. ; Merlo, G. ; Porte, L. ; Villard, L.
Published in Plasma Physics and Controlled Fusion
Pagination 5
Volume 56
Issue 7
Pages 072001
Date 2014
Publisher Bristol, Iop Publishing Ltd
Keywords
DOI https://doi.org/10.1088/0741-3335/56/7/072001
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Laboratories CRPP
SPC
Record Appears in Scientific production and competences > SB - School of Basic Sciences > SPC - Swiss Plasma Center > SPC - Swiss Plasma Center
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2014-06-23