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.2014-06-232014-06-232014-06-23201410.1088/0741-3335/56/7/072001https://infoscience.epfl.ch/handle/20.500.14299/104680WOS:000338515300001The 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.geodesic acoustic modetokamakphase-contrast imagingComplete multi-field characterization of the geodesic acoustic mode in the TCV tokamaktext::journal::journal article::research article