DocumentCode
2900995
Title
Scandate cathode for TWT
Author
Shuguang, Wang
Author_Institution
Chengdu Guoguang Electr. Co., Ltd., China
fYear
2004
fDate
6-10 Sept. 2004
Firstpage
224
Lastpage
225
Abstract
Because of low work functions, the scandate cathode has a low operating temperature and high emission current density. However, it still has certain limit in application field for the shortcoming of emission uniformity and bad operating stability. After improving the manufacturing technology of tungsten sponge, stipulating reasonably the operating temperature, and adopting a stable module structure, the emission uniformity and capacity of the impregnated cathode has been ameliorated. If the power of heater change within ±5%, then the corresponding change of cathode temperature can be realized within 25-30°C and the fluctuation of emission current less than ± 2% in the application of TWTs in our company.
Keywords
cathodes; travelling wave tubes; work function; 25 to 30 C; TWT; emission uniformity; manufacturing technology; module structure; operating stability; scandate cathode; tungsten sponge; work functions; Cathodes; Current density; Equations; Hydrogen; Material storage; Powders; Quantum computing; Temperature; Testing; Tungsten;
fLanguage
English
Publisher
ieee
Conference_Titel
Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International
Print_ISBN
0-7803-8437-7
Type
conf
DOI
10.1109/IVESC.2004.1414207
Filename
1414207
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