P2-19: Design of dual anode electron gun and beam focusing for Ku-band 140W short length space TWT

Author

Sharma, Rajendra K. ; Sharma, Prashant ; Choudhury, Amitavo R. ; Sharma, Sudhir M. ; Arya, Suneeta ; Srivastava, Vishnu

Author_Institution

MWT Div., Council of Sci. & Ind. Res. (CSIR), Pilani, India

fYear

2010

fDate

18-20 May 2010

Firstpage

259

Lastpage

260

Abstract

A dual anode electron gun has been designed using EGUN and TRAK codes for Ku-band 140 W short length space Traveling Wave Tube (TWT). Pierce type electron gun with an electrically isolated beam forming electrode (BFE), a control anode and an ion barrier anode (A₀) in addition to ground has been opted. Due considerations have been given in the design of gun assembly to ensure the long life (>10 years) and high reliability. A PPM circuit with confined beam flow focusing has also been designed with Sm₂Co₁₇ magnets using in-house developed code MAGFLD. A good beam laminarity and beam ripples (<;5%) have been obtained. An electron gun assembly has been designed and developed with due considerations for high voltage and thermal considerations from space TWT point of view.

Keywords

anodes; electron guns; travelling wave tubes; EGUN code; Ku-band short length space TWT; MAGFLD; Pierce type electron gun; TRAK code; beam focusing; beam forming electrode; control anode; dual anode electron gun; ion barrier anode; power 140 W; traveling wave tube; Anodes; Assembly; Electrodes; Electron beams; Electron tubes; Magnetic circuits; Magnetic confinement; Magnets; Space exploration; Voltage; Dual anode electron gun; PPM focusing; short length space TWTs;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2010 IEEE International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-7098-3

Type

conf

DOI

10.1109/IVELEC.2010.5503503

Filename

5503503