An analysis of lower hybrid grill coupling using an efficient full wave code

0382260 - ÚFP 2013 RIV AT eng J - Journal Article
Preinhaelter, Josef - Urban, Jakub - Vahala, L. - Vahala, G.
An analysis of lower hybrid grill coupling using an efficient full wave code.
Nuclear Fusion. Roč. 52, č. 8 (2012), 083005-083005. ISSN 0029-5515. E-ISSN 1741-4326
R&D Projects: GA ČR GA202/08/0419; GA MŠMT 7G09042
Institutional research plan: CEZ:AV0Z20430508
Keywords : Overdense plasma * Conversion * Tokamaks * Lower hybrid waves * LH Grills
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 2.734, year: 2012
http://iopscience.iop.org/0029-5515/52/8/083005/pdf/0029-5515_52_8_083005.pdf

Lower hybrid waves are very important for heating and current drive in tokamaks. Phased arrays of rectangular waveguides, generally called grills, are typically used as launchers. We develop a code which solves, in the 3D geometry of the grill structure, the problem of efficient coupling: the power density spectrum of the emitted waves, the power reflection coefficient, the power lost by the waves launched in the inaccessible region and the directivity of the waves transmitted into the accessible region. .
Permanent Link: http://hdl.handle.net/11104/0212534