Abstract

This paper describes the field emission array (FEA) cathode manufacturing to obtain high current density, the electron gun structure, the fabrication process and the test results of a FEA-gun. A three-dimensional electromagnetic simulation program MAFIA was used to design the FEA electron gun, and the electron beam trajectory was simulated under initial condition of emitted electrons with half angle of 30 degrees. In fabrication of the electron gun, many welding processes were used. The fabricated electron gun was tested in a vacuum chamber with a pressure of 5times10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-6</sup> Pa. The field emission array cathode is used as an electron source in a micro-traveling wave tube (TWT)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.