Design of electron gun based on comparing algorithm and simplex method

The dimensions of the electron gun are obtained by means of comparing algorithm to match objective perveance with the data in the database. Objective dimensions is acquired by the reduced scale method. An objective function is introduced, which takes account of perveance,beam waist and laminarity. A simplex method is applied to optimize the objective function to gain better electron laminar flow. The design of electron gun based on comparing algorithm and simplex method is efficient and has general application in electron guns with various properties.