A trochoidal analyzer to measure the electron beam energy distribution in a traveling wave tube

Abstract

The trochoidal monochromator is commonly used to produce a monoenergetic electron beam in an axial magnetic field. By adding a retarding electric field system at the entrance and a Faraday cup at the exit of the monochromator, such a dispersive device can be used to measure the energy distribution of an electron beam. This device is used in a traveling wave tube in order to study wave particle interactions.