Title :
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
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;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2010 IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-7098-3
DOI :
10.1109/IVELEC.2010.5503383
