Title :
Emittance effects on linear beams for millimeter-wave tubes with thermionic cathode
Author :
Zeng Peng ; Wang Jianguo ; Wang Guangqiang ; Li Shuang
Author_Institution :
Northwest Inst. of Nucl. Technol., Xi´an, China
Abstract :
Emittance effects become more prominent as the decrease of electron beam radius in millimeter wave (MMW) tube. In this paper, emittance effects on linear beams for an MMW tube with thermionic cathode were performed by utilizing a model derived from emittance effects on Brillouin flow. The results showed that emittance should be treated as dominative quantities for practical design of 150GHz or higher frequency linear-beams with thermionic cathode, when the voltage and current of these beams are 20kV and 100mA, respectively.
Keywords :
electron beams; millimetre wave tubes; thermionic cathodes; Brillouin flow; current 100 mA; electron beam radius; emittance effects; frequency 150 GHz; linear beams; millimeter wave tube; millimeter-wave tubes; thermionic cathode; voltage 20 kV; Cathodes; Electron beams; Electron tubes; Force; Magnetic fields; Millimeter wave technology; Scattering; emittance effects; linear beam; millimeter wave; thermionic cathode;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223872
