Title :
Experimental study of electron guns for TWT of terahertz range
Author :
Burtsev, Anton A. ; Bushuev, Nikolai A. ; Navrotsky, Igor A. ; Sakhadzhi, George V. ; Shalaev, Pavel D. ; Grigoriev, Yuri A.
Author_Institution :
Joint Stock Co. “Res.-&-Production Enterprise “Almaz”, Saratov, Russia
Abstract :
This paper presents the results of experimental testing of diode electron guns with sheet and multiple electron beams based on thermionic minicathodes for TWT of terahertz frequency range. The results of study in pulse mode of impregnated thermionic blade cathode with linear dimensions 0.1×0.7 mm with a current density of 114 A/cm2 are presented. A version of the five-beam electron gun is proposed with cylindrical minicathode with diameter of 0.25 mm, placing under the cells of control grid, achieved a current density of 85.5 A/cm2 at grid voltage of 900-1000 V.
Keywords :
electron beams; electron guns; thermionic cathodes; travelling wave tubes; TWT; current density; diode electron guns; electron beams; impregnated thermionic blade cathode; size 0.25 mm; size 0.7 mm; thermionic minicathodes; travelling wave tubes; voltage 900 V to 1000 V; Anodes; Blades; Cathodes; Current density; Electron beams; Electron guns; Magnetic fields; TWT; electron gun; impregnated thermionic cathode; multiple beam; sheet beam; terahertz;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223751
