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Charged Particle Tracing: plotting beam size vs position

Posted 26 févr. 2026, 13:52 UTC−5 0 Replies

tim123

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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.

Attachments:

einzel_lens.mph

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