Geodesic acoustic mode frequencies in experimental tokamak equilibria
作者： R Hager , K Hallatschek
DOI: 10.1088/0741-3335/55/3/035009
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摘要: The geodesic acoustic mode (GAM) frequency is calculated for experimental equilibrium data from ASDEX Upgrade and NSTX discharges using an eigenvalue solver. For this purpose, a special algorithm applied to generate precise, smooth flux-surfaces suitable calculation of local equilibria the coarse grained output solver CLISTE. Since realistic magnetic geometries allow more than one with properties GAM, two-fluid turbulence computations are discussed clarify influence on linear spectrum. Using approach shown be superior use approximated flux-surface shapes leads better agreement results.
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A. V. Melnikov, L. G. Eliseev, A. V. Gudozhnik, S. E. Lysenko, V. A. Mavrin, S. V. Perfilov, L. G. Zimeleva, M. V. Ufimtsev, L. I. Krupnik, P. M. Schoch, Investigation of the specific plasma potential oscillations with geodesic acoustic mode frequencies by heavy ion beam probing arXiv: Plasma Physics. ,(2004) , 10.1007/S10582-005-0046-6
P J Mc Carthy, , Identification of edge-localized moments of the current density profile in a tokamak equilibrium from external magnetic measurements Plasma Physics and Controlled Fusion. ,vol. 54, pp. 015010- ,(2012) , 10.1088/0741-3335/54/1/015010
G D Conway, C Tröster, B Scott, K Hallatschek, , Frequency scaling and localization of geodesic acoustic modes in ASDEX Upgrade Plasma Physics and Controlled Fusion. ,vol. 50, pp. 055009- ,(2008) , 10.1088/0741-3335/50/5/055009
G. D. Conway, C. Angioni, F. Ryter, P. Sauter, J. Vicente, Mean and oscillating plasma flows and turbulence interactions across the L-H confinement transition. Physical Review Letters. ,vol. 106, pp. 065001- 065001 ,(2011) , 10.1103/PHYSREVLETT.106.065001
Zhe Gao, Plasma shaping effects on the geodesic acoustic mode in the large orbit drift width limit Physics of Plasmas. ,vol. 17, pp. 092503- ,(2010) , 10.1063/1.3481464
A. Krämer-Flecken, S. Soldatov, H. R. Koslowski, O. Zimmermann, Properties of Geodesic Acoustic Modes and the Relation to Density Fluctuations Physical Review Letters. ,vol. 97, pp. 045006- ,(2006) , 10.1103/PHYSREVLETT.97.045006
Robert Hager, Klaus Hallatschek, Radial propagation of geodesic acoustic modes in up-down asymmetric magnetic geometries Physics of Plasmas. ,vol. 17, pp. 032112- ,(2010) , 10.1063/1.3368796
R. L. Miller, M. S. Chu, J. M. Greene, Y. R. Lin-Liu, R. E. Waltz, Noncircular, finite aspect ratio, local equilibrium model Physics of Plasmas. ,vol. 5, pp. 973- 978 ,(1998) , 10.1063/1.872666
K. Hallatschek, A. Zeiler, Nonlocal simulation of the transition from ballooning to ion temperature gradient mode turbulence in the tokamak edge Physics of Plasmas. ,vol. 7, pp. 2554- 2564 ,(2000) , 10.1063/1.874096
Robert Hager, Klaus Hallatschek, Nonlinear Dispersion Relation of Geodesic Acoustic Modes Physical Review Letters. ,vol. 108, pp. 035004- ,(2012) , 10.1103/PHYSREVLETT.108.035004