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Yup! Still used all the time! And both (IMHO) super un-ergonomic.

If you have any interest in single-particle tracking for ion optics. I'd encourage you to check out https://github.com/KATRIN-Experiment/Kassiopeia. It can do both exact and adiabatic tracking of particles (and will solve for B and E-fields in complex electrode geometries). However, as far as I know it only handles static electric fields for now.

Cool, thanks for the link it's always interesting to see what's out there (there's so much interesting code around!).

My quick look at that makes me think it's more like a modern SIMION than a modern TRANSPORT.

I'm more interested at the level of accelerator beamlines (ensembles of magnets with high energy beams), and how to reduce the "impedence mismatch" between that process and the physical design optimization of individual magnets.

Thanks!

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