Hi Richard, if you have separate studies for computing the magnetic fields and electric fields, then you just need to pass the solution from the magnetic fields study into the study computing the electric fields, then pass that solution into the study which computes the particle trajectories.
There is a Model Library example which demonstrates how to pass the solution from 2 prior studies into a third one. The model requires the AC/DC and Particle Tracing Modules.
www.comsol.com/model/particle-...rupole-mass-spectrometer-10653
Thank you! That worked. The only issue I have right now is that my current is not flowing the right direction for my multiturn coil. I chose a reference edge, and it is clockwise. I would like the current to flow counter clockwise, so I have tried to do this by applying a negative current, but it still gives me the wrong result (current still flowing clockwise).
