Hi Geant4 users!
I have a simulation of electrons propagating in vacuum in a magnetic field of some few Teslas. They propagate on cyclotron trajectories accordingly after being created in vacuum by my particle generator. It allows for adjustment of the polar angle wrt to the magnetic field.
My question: as soon as the polar angle (wrt the guiding mag. field) is increased to large angles (strong gyration) or if the initial kinetic energy is chosen very low, the electron trajectories just stop mid-air after some propagation. Also in a subsequent sensitive volume they are not tracked, so it is not a displaying issue.
My suspicion is a relation to overall propagation time since both lowering energy or increasing pitch angle ( = lowering the longitudinal speed) cause the trajectories to terminate in vacuum.
Does someone know about this issue or is there a implicit (or explicit) cut at some time?
I am looking forward for your ideas!