Resistance network analog simulation of the magnetic field produced by a solenoid

A method is proposed for the analog simulation of the magnetic field produced by a solenoid with an arbitrary axially symmetric shape, having magnetic pole pieces also with arbitrary axially symmetric shapes. The ordinary resistance network analog for solving axially symmetric Poisson's problems is used in this method. The simulated magnetic field configurations for some specific cases are compared with theoretical ones. The results obtained by this method can be used directly as the input data for an automatic electron-trajectory tracing scheme in which a resistance network analog is used in conjunction with an electronic computer.