Analysis of high-harmonic fast wave propagation and absorption on NSTX

2001 ◽  
Author(s):  
T. K. Mau
Keyword(s):  
Wave Propagation ◽  
High Harmonic ◽  
Fast Wave

Fast ion absorption of the high harmonic fast wave in the National Spherical Torus Experiment

2004 ◽  
Vol 11 (5) ◽  
pp. 2441-2452 ◽  
Author(s):  
A. L. Rosenberg ◽  
J. E. Menard ◽  
J. R. Wilson ◽  
S. S. Medley ◽  
R. Andre ◽  
...  
Keyword(s):  
High Harmonic ◽  
Fast Wave ◽  
Spherical Torus ◽  
Ion Absorption ◽  
Fast Ion

A full wave theory of high-harmonic fast wave absorption in high-beta plasmas

1998 ◽  
Vol 5 (6) ◽  
pp. 2284-2290 ◽  
Author(s):  
C. N. Lashmore-Davies ◽  
V. Fuchs ◽  
R. A. Cairns
Keyword(s):  
High Harmonic ◽  
Wave Theory ◽  
Fast Wave ◽  
Wave Absorption ◽  
Full Wave ◽  
High Beta

Resonant wave-filament interactions as a loss mechanism for HHFW heating and current drive

2021 ◽  
Author(s):  
Wouter Tierens ◽  
James R Myra ◽  
Roberto Bilato ◽  
Laurent Colas
Keyword(s):  
Surface Wave ◽  
Surface Waves ◽  
High Harmonic ◽  
Current Drive ◽  
Fast Wave ◽  
Power Losses ◽  
Loss Mechanism ◽  
Resonant Wave ◽  
Plasma Filaments ◽  
Analytic Expression

Abstract Perkins et al. PRL 2012 [1] reported unexpected power losses during High Harmonic Fast Wave (HHFW) heating and current drive in NSTX. Recently, Tierens et al [2] proposed that these losses may be attributable to surface waves on field-aligned plasma filaments, which carry power along the filaments, to be lost at the endpoints where the filaments intersect the limiters. In this work, we show that there is indeed a resonant loss mechanism associated with the excitation of these surface waves, and derive an analytic expression for the power lost to surface wave modes at each filament.

scholarly journals Modeling of high harmonic fast wave scenarios for NSTX Upgrade

2019 ◽  
Vol 59 (8) ◽  
pp. 086006 ◽  
Author(s):  
N. Bertelli ◽  
M. Ono ◽  
E.F. Jaeger
Keyword(s):  
High Harmonic ◽  
Fast Wave

Current drive with combined electron cyclotron wave and high harmonic fast wave in tokamak plasmas

2016 ◽  
Vol 23 (12) ◽  
pp. 122504 ◽  
Author(s):  
J. C. Li ◽  
X. Y. Gong ◽  
J. Q. Dong ◽  
J. Wang ◽  
N. Zhang ◽  
...  
Keyword(s):  
High Harmonic ◽  
Electron Cyclotron ◽  
Current Drive ◽  
Fast Wave ◽  
Tokamak Plasmas ◽  
Electron Cyclotron Wave

scholarly journals Effect of rotation on wave propagation in a transversely isotropic medium

2001 ◽  
Vol 7 (2) ◽  
pp. 147-154 ◽  
Author(s):  
F. Ahmad ◽  
A. Khan
Keyword(s):  
Wave Propagation ◽  
Isotropic Medium ◽  
Transversely Isotropic ◽  
Slow Waves ◽  
Fast Wave ◽  
Transversely Isotropic Medium ◽  
High Frequencies ◽  
Unbounded Medium ◽  
Axis Of Symmetry ◽  
Effects Of Rotation

Wave propagation in a transversely isotropic unbounded medium rotating about its axis of symmetry is studied. For propagation at high frequencies, effects of rotation are negligible but for a frequency which is much smaller than the frequency of rotation, there is a fast wave and two very slow waves. When the two frequencies are equal, the speed of a wave becomes unbounded.

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