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

fYear

1999

fDate

36373

Firstpage

112

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Radiophysics of Ultra-High Frequencies, 1999. International University Conference Proceedings

Conference_Location

St Petersburg

Print_ISBN

5-7422-0083-8

Type

conf

DOI

10.1109/UHF.1999.787892

Filename

787892