Simulation of High-Harmonic Fast-Wave Heating on the National Spherical Tokamak Experiment
- Resource Type
- Periodical
- Authors
- Green, D. L.; Jaeger, E. F.; Chen, G.; Berry, L. A.; Pugmire, D.; Canik, J. M.; Ryan, P. M.
- Source
- IEEE Transactions on Plasma Science IEEE Trans. Plasma Sci. Plasma Science, IEEE Transactions on. 39(11):3020-3021 Nov, 2011
- Subject
- Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Plasmas
Heating
Antennas
Radio frequency
Magnetic cores
Magnetic resonance imaging
Electromagnetic propagation in plasma media
plasma heating
plasma waves
simulation
- Language
- ISSN
- 0093-3813
1939-9375
Images associated with radio-frequency heating of low-confinement mode plasmas in the National Spherical Tokamak Experiment, as calculated by computer simulation, are presented. The AORSA code has been extended to simulate the whole antenna-to-plasma heating system by including both the kinetic physics of the well-confined core plasma and a poorly confined scrape-off plasma and vacuum vessel structure. The images presented show the 3-D electric wave field amplitude for various antenna phasings. Visualization of the simulation results in 3-D makes clear that $-30^{\circ}$ phasing excites kilo-volt per meter coaxial standing modes in the scrape-off plasma and shows magnetic-field-aligned whispering-gallery type modes localized to the plasma edge.