Parametric analysis in the design of technological electron beam guns

A method of designing electron guns based on the method of parametric analysis and optimization is offered. The criteria of selection of variable parameters—the radius of the spherical surface of the gate electrode and the position of the center of the sphere with respect to the cathode—have been justified. It has been proven that taking due account of the technical limitations of materials and the chosen design allows reducing the task of designing the electron gun to the classical optimization problem. An example of calculating the characteristics of the prototype electron gun using the proposed method is given. Analysis of the results of computational experiments has allowed recommendations to be worked out for the developers of welding electron beam guns in the form of parametric dependences and design algorithms.