P3-34: Design of a gridded electron gun using the particle path and the FEM approach

Author

Xavier, César C. ; Motta, Cláudio C.

Author_Institution

Inst. de Pesquisas Energeticas e Nucl., CNEN-SP, Sao Paulo, Brazil

fYear

2010

fDate

18-20 May 2010

Firstpage

397

Lastpage

398

Abstract

The XMGUN was used to design a 30kV, 4.6A and 0.88μPerv axis-symmetric high power electron gun, with grid and shadow grid, working under the space charge limited flow to be used in a TWT. The XMGUN uses the particle path, instead of the motion equation, to perform the macroparticles ray tracing and the FEM approach. It was observed a current increase and a decrease of the normalized transverse velocity when the control grid voltage was varied from 400V to 600V.

Keywords

electron guns; finite element analysis; ray tracing; space charge waves; travelling wave tubes; FEM approach; XMGUN; axis-symmetric high power electron gun; control grid voltage; gridded electron gun; macroparticle; normalized transverse velocity; particle path; ray tracing; shadow grid; space charge limited flow; travelling wave tube; Cathodes; Coaxial components; Conductors; Electromagnetic fields; Electron tubes; Maxwell equations; Oscillators; Probes; Software prototyping; Voltage; TWT; electron gun; space-charge-limited flow;

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.2010.5503383

Filename

5503383