A computerized three dimensional approach to beam measurement and analysis

Electron gun design has fared well with the advent of high speed digital computers and complex models, but the final word as always comes from the measuring of a gun´s physical properties. Before using a gun design, it is desirable to determine characteristics such as the axial location of the beam minimum and it´s diameter as well the general current distribution. This paper will describe the techniques used to obtain three dimensional data and a concept used to eliminate much of the noise and ambiguities involved with older analyzer designs.