Title :
165 GHz, 1.5 MW-coaxial cavity gyrotron with depressed collector
Author :
Piosczyk, Bernhard ; Braz, Oliver ; Dammertz, Günter ; Iatrou, Christos T. ; Illy, Stefan ; Kuntze, Michael ; Michel, Georg ; Thumm, Manfred
Author_Institution :
Inst. fur Tech. Phys., Karlsruhe Univ., Germany
fDate :
4/1/1999 12:00:00 AM
Abstract :
A further step in the development of a coaxial-cavity gyrotron operated in the transverse electric TE-31,17 mode at 165 GHz is presented. The gyrotron has been equipped with a quasi-optical output system consisting of a Vlasov launcher with a single cut and two mirrors, one with a quasi-elliptic and the other with a nonquadratic phase correcting surface. The radio frequency (RF) power is transmitted through a single output window. A maximum output power of 1.7 MW has been achieved. At the nominal operational parameters an RF power of 1.3 MW with an efficiency of 27.3% has been measured. The efficiency increases to 41% in operation with a single-stage depressed collector
Keywords :
cavity resonators; gyrotrons; millimetre wave tubes; 1.3 to 1.7 MW; 1.5 MW; 165 GHz; 27.3 to 41 percent; RF power transmission; TE-31,17 mode; Vlasov launcher; coaxial cavity gyrotron; depressed collector; nonquadratic phase correcting mirror surface; quasi-elliptic mirror; quasi-optical output system; transverse electric mode; Coaxial components; Gyrotrons; Hollow waveguides; Mirrors; Power generation; Power measurement; Radio frequency; Switches; Tellurium; US Government;
Journal_Title :
Plasma Science, IEEE Transactions on
