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

C. A. De Meijere; S. Coda; Z. Huang; L. Vermare; T. Vernay; V. Vuille; S. Brunner; J. Dominski; P. Hennequin; A. Krämer-Flecken; G. Merlo; L. Porte; L. Villard

doi:10.1088/0741-3335/56/7/072001

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

C. A. De Meijere
, S. Coda
, Z. Huang
, L. Vermare
, T. Vernay
, V. Vuille
, S. Brunner
, J. Dominski
, P. Hennequin
, A. Krämer-Flecken
, G. Merlo
, L. Porte
, L. Villard

Research output: Contribution to journal › Article › peer-review

78 Scopus citations

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.

Original language	English (US)
Article number	072001
Journal	Plasma Physics and Controlled Fusion
Volume	56
Issue number	7
DOIs	https://doi.org/10.1088/0741-3335/56/7/072001
State	Published - Jul 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

Keywords

geodesic acoustic mode
phase-contrast imaging
tokamak

Access to Document

10.1088/0741-3335/56/7/072001

Cite this

De Meijere, C. A., Coda, S., Huang, Z., Vermare, L., Vernay, T., Vuille, V., Brunner, S., Dominski, J., Hennequin, P., Krämer-Flecken, A., Merlo, G., Porte, L., & Villard, L. (2014). Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak. Plasma Physics and Controlled Fusion, 56(7), Article 072001. https://doi.org/10.1088/0741-3335/56/7/072001

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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.",

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AU - De Meijere, C. A.

AU - Coda, S.

AU - Huang, Z.

AU - Vermare, L.

AU - Vernay, T.

AU - Vuille, V.

AU - Brunner, S.

AU - Dominski, J.

AU - Hennequin, P.

AU - Krämer-Flecken, A.

AU - Merlo, G.

AU - Porte, L.

AU - Villard, L.

PY - 2014/7

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N2 - 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.

AB - 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.

KW - geodesic acoustic mode

KW - phase-contrast imaging

KW - tokamak

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JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

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