Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak

作者：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

来源：Plasma Physics and Controlled Fusion, 2014, 56(7): 072001.

DOI：10.1088/0741-3335/56/7/072001

• geodesic acoustic mode
• tokamak
• phase-contrast imaging

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.

• 出版日期2014-7