DRAFT: Spin tracking2

[Eirhorlyk]

No description provided.

[ax3l]

Hi @Eirhorlyk @carlandreaslindstrom just FYI, spin models are progressing nicely in ImpactX now.
If you like, you can subscribe to the issue here:
BLAST-ImpactX/impactx#1154
and follow the milestone here:
https://github.com/BLAST-ImpactX/impactx/milestone/6

If I had to estimate, I think ImpactX 26.03 in early March should have what you need to do a first plasma staging setup. We should discuss with @cemitch99 what we want to do for the tapered plasma lens spin tracking map if you have some time.