19.1: Status of the MICHELLE code and applications

The MICHELLE code is a Finite-Element Electrostatic Particle in Cell code for application to 2D and 3D particle beam formation, transport, and collection. Although its initial development focus had been for DC electron guns and depressed collectors, other applications such as RF electron guns, ion thrusters, photocathodes and e-beam lithography have become a recent focus. The MICHELLE code's ability to manage large mesh sizes and large particle counts in complex geometries requiring the resolution of disparate spatial scales in 2D and 3D on desktop computers has allowed it to be applied to devices that previously could not have been readily modeled. This presentation gives an overview of recent applications, capabilities, and the current status of MICHELLE. A gun optimization problem will be presented and the effects of different modeling parameters and meshing techniques will be discussed.