Global two-fluid simulations of geodesic acoustic modes in strongly shaped tight aspect ratio tokamak plasmas

2013 ◽  
Vol 20 (5) ◽  
pp. 052302 ◽  
Author(s):  
J. R. Robinson ◽  
B. Hnat ◽  
A. Thyagaraja ◽  
K. G. McClements ◽  
P. J. Knight ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Tokamak Plasmas ◽  
Acoustic Modes ◽  
Two Fluid

Geodesic acoustic modes and zonal flows in rotating large-aspect-ratio tokamak plasmas

2011 ◽  
Vol 53 (6) ◽  
pp. 065008 ◽  
Author(s):  
V I Ilgisonis ◽  
V P Lakhin ◽  
A I Smolyakov ◽  
E A Sorokina
Keyword(s):  
Aspect Ratio ◽  
Tokamak Plasmas ◽  
Large Aspect Ratio ◽  
Zonal Flows ◽  
Acoustic Modes

scholarly journals Aspect ratio scaling of ideal no-wall stability limits in high bootstrap fraction tokamak plasmas

2004 ◽  
Vol 11 (2) ◽  
pp. 639-646 ◽  
Author(s):  
J. E. Menard ◽  
M. G. Bell ◽  
R. E. Bell ◽  
D. A. Gates ◽  
S. M. Kaye ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Tokamak Plasmas ◽  
High Bootstrap ◽  
Stability Limits ◽  
Ratio Scaling

Ideal MHD stability limits of low aspect ratio tokamak plasmas

1997 ◽  
Vol 37 (5) ◽  
pp. 595-610 ◽  
Author(s):  
J.E Menard ◽  
S.C Jardin ◽  
S.M Kaye ◽  
C.E Kessel ◽  
J Manickam
Keyword(s):  
Aspect Ratio ◽  
Tokamak Plasmas ◽  
Low Aspect Ratio ◽  
Ideal Mhd ◽  
Mhd Stability ◽  
Stability Limits

Regions of kinetic geodesic acoustic modes and streamers in JIPPT-IIU tokamak plasmas

2012 ◽  
Vol 52 (6) ◽  
pp. 063023 ◽  
Author(s):  
Y. Hamada ◽  
T. Watari ◽  
A. Nishizawa ◽  
O. Yamagishi ◽  
K. Narihara ◽  
...  
Keyword(s):  
Tokamak Plasmas ◽  
Acoustic Modes

scholarly journals Scrape-off-layer current loops and floating potential in limited tokamak plasmas

2017 ◽  
Vol 83 (6) ◽  
Author(s):  
J. Loizu ◽  
J. A. Morales ◽  
F. D. Halpern ◽  
P. Ricci ◽  
P. Paruta
Keyword(s):  
Fluid Model ◽  
Radial Profile ◽  
Floating Potential ◽  
Tokamak Plasmas ◽  
Fluid Turbulence ◽  
Two Fluid Model ◽  
The One ◽  
Dipolar Structure ◽  
Two Fluid ◽  
Asymmetric Equilibrium

We investigate the question of how plasma currents circulate and close in the scrape-off-layer (SOL) of convection-limited tokamak plasmas. A simplified two-fluid model describes how currents must evacuate charge at the sheaths due to cross-field currents that are not divergence-free. These include turbulence-driven polarization currents and poloidally asymmetric equilibrium diamagnetic currents. The theory provides an estimate for the radial profile of the floating potential, which reveals a dipolar structure like the one observed experimentally. Simulations with a fluid turbulence code provide evidence for the predicted behaviour of currents and floating potential.

Neoclassical transport coefficients for finite-aspect-ratio and bean-shaped tokamak plasmas

1987 ◽  
Vol 30 (4) ◽  
pp. 1152 ◽  
Author(s):  
E. C. Crume ◽  
C. O. Beasley ◽  
S. P. Hirshman ◽  
W. I. van Rij
Keyword(s):  
Aspect Ratio ◽  
Transport Coefficients ◽  
Tokamak Plasmas ◽  
Neoclassical Transport
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