Title :
Optimization of microwave reflection gratings for electron cyclotron resonance heating in O2 mode
Author :
Mangold, O. ; Kasparek, W. ; Holzhauer, E.
Author_Institution :
Inst. fur Plasmaforschung, Stuttgart Univ., Germany
fDate :
27 Sept.-1 Oct. 2004
Abstract :
For the application as in-vessel microwave mirrors in fusion reactors, for which the geometry cannot be freely chosen, microwave reflection gratings are being optimized with respect to single order diffraction efficiencies and polarisation independent phase behavior. By simulations using the boundary element method (BEM), which is very fast for this purpose, it is possible, to obtain numerical optimization of Fourier gratings, resulting in almost perfect (efficiency >99%) grating structures.
Keywords :
Fourier transform optics; boundary-elements methods; holographic gratings; mirrors; optimisation; plasma radiofrequency heating; plasma simulation; BEM; Fourier gratings; O2 mode; boundary element method; electron cyclotron resonance heating; fusion reactors; in-vessel microwave mirrors; microwave reflection gratings; numerical optimization; polarisation independent phase; single order diffraction; Cyclotrons; Diffraction gratings; Electromagnetic heating; Electrons; Fusion reactors; Geometry; Mirrors; Polarization; Reflection; Resonance;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422293
