Computer Aided Design Of Magnetic Deflection System

Abstract

In this paper, the design sensitivity analysis is introduced to find optimum coil distributions that minimize both the convergence and distortion errors for the magnetic deflection system with large-angle. The design sensitivity coefficients are numerically computed by using the centered difference method. Volume integral equation method with magnetization vector M^^→ as unknown variable and 4th order Runge-Kutta method are used to compute the distributions of magnetic induction and the electron beam trajectories, respectively. Through the numerical example with 110° deflection system for the screen of 29", the usefulness of the alrorithm is verified.