Quasi-optical grill using diffraction gratings for lower-hybrid waves systems
New concepts have recently been proposed for LHW antennae on large tokamaks, based on quasi-optical techniques. The basic theory of a diffraction grating is applied to a quasi-optical grill. A theoretical model is developed to calculate the efficiency of a grill with a single grating layer. In order to improve the efficiency, the possibility of a resonant grill composed of a double layer of rods or strips is considered. Numerical applications are presented for both types of grill.
Bibliographic Reference: Report: EUR-CEA-FC-1508 EN (1994) 70 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199411571 / Last updated on: 1995-01-10
Original language: en
Available languages: en