Study of the Influence of Technological Deviations on the Characteristics of an Electron Beam with a Constant Inner Diameter

Abstract

The desire to reduce the overall dimensions of microwave devices, caused by increasing operating frequencies and decreasing the weight of aviation equipment, leads to the need to account for possible deviations from the calculated parameters of device elements. Such parameter deviations can be caused by technological features of production, which are becoming increasingly necessary to take into account during design. This article is devoted to searching for patterns in the influence of the geometric parameters of permanent magnets on the quantities determining the quality of electron beam focusing, from the standpoint of the occurrence of technological deviations. The article analyzes the distribution of the magnetic field in ring and prismatic magnets with various geometric parameters using numerical modeling to optimize the transport conditions of intense electron beams. The paper presents field graphs for magnets of various configurations, demonstrating the transition from non-uniform profiles to harmonic distributions. The importance of accounting for technological deviations in the design and manufacture of magnetic systems is discussed, since even small changes in geometric parameters can significantly affect the output characteristics of the device. An analysis is simultaneously conducted of the influence of several geometric parameters on the magnetic field and magnetic coefficient. Three-dimensional graphs were proposed as a tool for analyzing the magnitude of potential consequences of simultaneous deviations in two geometric parameters. The technique allows finding implicit optimal combinations of magnet parameters: thickness 25 mm, internal diameter 20 mm, external diameter 33 mm.