Two-beam magnetron injection guns for coaxial gyrotron with two electron beams.

To verify the concept of a coaxial gyrotron with two electron beams (CGTB), an electron gun with two beams is needed. In this paper, two types of two-beam magnetron injection guns are proposed: a normal two-beam magnetron injection gun and a coaxial two-beam magnetron injection gun. The design models and space charge limiting current are given. The simulation results show that both types of guns could fulfill the requirement for a CGTB. Comparisons between the two types of injection guns are discussed. [ABSTRACT FROM AUTHOR]