Charged Particle Tracing: plotting beam size vs position

Please login with a confirmed email address before reporting spam

Hello,

The tutorial on charged particle tracing and also the webinar on "Simulating Charged Particle Optics" at 22:20 shows how one can plot for example the average particle distance from the propagation axis, i.e. rms beam size, as a plot of time. However in ion beam optics i am more interested in this property as a function of the position along the beam propagation axis. This means i want to evaluate the rms beam size at several xy-planes with different z-coordinates (if the z axis is the beam propagation direction). How could i do this, especially when i am using a particle release in a volume as initial condition and not a particle beam, potentially releasing particles at different times, potentially having some particles that will freeze to a wall and so on? Intersection Point 3D looks like the dataset i want, but only for a single plane. And if i use the additional parallel planes feature, then how could i separate the data from each of these parallel planes and know from which of the z-coordinates this comes, as they are only saved as one big dataset then?

Thanks in advance for any help!

PS: I attached an example model in which i would like to have this plotted.



0 Replies Last Post 26 feb 2026, 13:52 GMT-5
COMSOL Moderator

Hello tim123

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Reply

Please read the discussion forum rules before posting.

Please log in to post a reply.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.