Collector design: The GPT code has been used extensively for 3D collector design.

3D boundary elements like a pipe, cone or torus can be used to model any geometry and custom boundary elements can be used whenever the required shape is not available. Multiple-scattering as function of angle of incidence and particle energy assure accurate results. Special data-analysis routines calculate collected current and dissipated power per collector plate. Automatic parameter scans can be used to plot current and power as function of any variable.

The example below shows multiple-scattering events in a multi-stage 3D collector geometry. The electrostatic field is calculated by Superfish and imported as a GPT field-map in the calculations.

collector (39KB)
Collector trajectory output showing multiple-scattering events exported to AutoCAD.