Abstract
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° 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.
Original language | English |
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Article number | 5960794 |
Pages (from-to) | 3020-3021 |
Number of pages | 2 |
Journal | IEEE Transactions on Plasma Science |
Volume | 39 |
Issue number | 11 PART 1 |
DOIs | |
State | Published - Nov 2011 |
Funding
Manuscript received December 1, 2010; revised June 8, 2011; accepted June 16, 2011. Date of publication July 25, 2011; date of current version November 9, 2011. This work was supported by the U.S. DOE under Contract DE-AC05-00OR22725 with UT-Battelle, LLC.
Keywords
- Electromagnetic propagation in plasma media
- plasma heating
- plasma waves
- simulation