research article
Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak
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.
Type
research article
Web of Science ID
WOS:000338515300001
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.
Date Issued
2014
Publisher
Published in
Volume
56
Issue
7
Article Number
072001
Editorial or Peer reviewed
REVIEWED
Written at
EPFL
Available on Infoscience
June 23, 2014
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