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DOI: 10.1016/S0920-3796(03)00264-3
Zitationen: 5
Web of Science
Zitationen: 6

Mirror development for the 140 GHz ECRH system of the stellarator W7-X

Hailer, H.; Dammertz, G.; Erckmann, V.; Gantenbein, G.; Hollmann, F.; Kasparek, W.; Leonhardt, W.; Schmid, M.; Schüller, P. G.; Thumm, Manfred; Weissgerber, M.

The stellarator W7-X which is currently under construction in Greifswald, Germany, will be equipped with a powerful ECRH system, working at 140 GHz. The ECRH system is designed to operate in the continuous wave (CW) regime. The millimetre (mm)-wave power will be generated by 10 gyrotrons delivering 1 MW each and will be transmitted from the gyrotron hall to the machine via a fully optical system. The mirrors (more than 160) are water cooled and can be adjusted by step motors remotely. The transmission line consists of a single-beam waveguide part (SBWG) and a multi-beam waveguide part (MBWG). In the SBWG part (length appr. 10-15 m), close to the gyrotrons, the mirrors are related to the individual tubes. Two confocal MBWG lines (length appr. 40 m) support 5 beams simultaneously each. At the stellarator the beams are separated again and launched by individual antennas to the plasma. To reach high transmission efficiency, the design of the mirrors must guarantee a mechanically stable surface under the heat load imposed by the ohmic loss of the mm waves. The design consists of a 60 - 70 mm thick honeycomb structure from stainless steel ... mehr

Zugehörige Institution(en) am KIT Institut für Höchstfrequenztechnik und Elektronik (IHE)
Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Jahr 2003
Sprache Englisch
Identifikator ISSN: 0920-3796, 1873-7196
KITopen ID: 1000001324
HGF-Programm 31.20.30; LK 01
Erschienen in Fusion engineering and design
Band 66-68
Seiten 639-644
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