SNEER: A digital computer program for the simulation of charged particle beams and electrostatic lenses

SNEER has been found to be a powerful tool for the analysis of charged particle beams and trajectories. Inclusion of relativistic trajectory computations and the ability to include dielectrics in the potential relaxation enables the program to handle virtually any type of beam configuration not including a source - such as a cathode. Examples shown here have produced results within a few percent of exact theoretical and experimental results. A sample input data set is presented for still another application of the program. Here, trapped electron orbits are traced in electric and magnetic fields in an ion gauge configuration