Title :
Experimental investigation of technological gyrotrons
Author :
Glyavin, M. ; Goldenberg, A. ; Flyagin, V. ; Kuftin, A. ; Luchinin, A. ; Lygin, V. ; Malygin, O. ; Manuilov, V. ; Moiseev, M. ; Zavolsky, N. ; Zapevalov, V.
Author_Institution :
Gycom Ltd., Nizhny Novgorod, Russia
Abstract :
Powerful gyrotrons for technological applications, including material processing, are presented. 30 GHz gyrotrons at the second cyclotron harmonic TE02 mode with oil-cooled solenoid were tested. On CW regime with output power 10 kW obtained efficiency 42% and output power 30 kW with efficiency 35%. The highest for the second harmonic gyrotrons efficiency 50% with 13 kW output power level was observed after modification of the tube. Experimental dependencies of output power and gyrotron efficiency before and after modification magnetic field profile are given. Conditions of high efficiency operation taking into account space-charge effects, velocity spread, RF field and static magnetic field profiles are discussed. Results of quality testing of cathodes and dependencies of the gyrotron efficiency on cathode emission inhomogeneity are presented
Keywords :
gyrotrons; 10 kW; 13 kW; 30 kW; 35 percent; 42 percent; 50 percent; efficiency; gyrotron; magnetic field; oil-cooled solenoid; output power; second cyclotron harmonic mode; Cathodes; Cyclotrons; Gyrotrons; Magnetic fields; Materials processing; Materials testing; Power generation; Power system harmonics; Solenoids; Tellurium;
Conference_Titel :
Electronics and Radiophysics of Ultra-High Frequencies, 1999. International University Conference Proceedings
Conference_Location :
St Petersburg
Print_ISBN :
5-7422-0083-8
DOI :
10.1109/UHF.1999.787892
