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Abstract

A new concept, the reflector waveguide array, is proposed to improve and simplify the design of c.w. lower hybrid launchers for steady-state reactor applications. A thick-wall waveguide structure accommodating a large number of cooling ducts is suggested, with a plasma facing mouthpiece made of the same material as the reactor first wall. In order to compensate for the increased horizontal distance between adjacent waveguides, the front ends of the thick septa are grooved to form short (approximately lambda/4) passive waveguides which act as reflectors between the r.f.-powered waveguides (drivers). For an adequate phasing between the active waveguides, the total electric field at the reflector waveguide apertures varies coherently with the one in the drivers to launch a highly directional slow wave.

Additional information

Authors: BIBET P, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);LITAUDON X, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);MOREAU D, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Report: EUR-CEA-FC-1520 EN (1994) 36 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199411570 / Last updated on: 1995-01-10
Category: PUBLICATION
Original language: en
Available languages: en
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