[FFA_CEBAF_Collab] EM Spreader Layout

[Alex Bogacz]

Hi Jay and Yves,

Would you be willing to take a look at OptiM files in Ryan’s depository? Another pair of eyes is always useful…
Thanks.

Cheers,

Alex
___________________________________
S. Alex Bogacz,
Accelerator Physics Group Leader
Center for Advanced Studies of Accelerators
Jefferson Lab
12000 Jefferson Avenue,<x-apple-data-detectors://8>
Newport News, VA 23606<x-apple-data-detectors://8>
___________________________________
Sent from my iPhone

On Jul 18, 2022, at 8:12 AM, Ryan Bodenstein via FFA_CEBAF_Collab <ffa_cebaf_collab at jlab.org> wrote:


G’morning Colleagues, and Happy Monday!

I have just uploaded some files for the NE Spreader to the file repository. They are in the Optics folder, in a new folder titles “Spreader.” This link should work as well: Spreader<https://jeffersonlab-my.sharepoint.com/:f:/r/personal/tristan_jlab_org/Documents/Grad%20Student%202019/Graduate%20Student%20Steering/CEBAF%20FFA%20Working%20Group/Optics/Spreader?csf=1&web=1&e=wAZhqJ>. But if the link doesn’t work, please just check the repository.

A few notes:

  1.  These are all 4 of the EM spreaders for the NE corner. I haven’t done the FFA part yet (and will likely bother Scott a bit to do that part, since I have to know a bit of what requirements the splitter(s) will have).
  2.  These were performed in OptiM, and the conversion to MadX seems to have some odd hiccup (and therefore the conversion to BMAD as well). I’m working on that. For now, I’ve also uploaded the OptiMX installer for Windows (or Wine/Windows environment that you use). That way, you can run them as you wish, if you wish. But, I also put some .dat files in a subfolder that have some of the info you may need. If you need other info, let me know.
  3.  I’m still working on some other options as well. I’d like to drop the height of the first step in the first pass if possible, but I have to check clearances first. I also need to make sure the setup still fits in the z direction, but I think it does. For now, let’s call this Option 1, tentatively. There will be more, but this should give us a good enough place to work from.
  4.  The optics will end up different, depending on what comes out of our linac choice(s). But for now, this is a good approximation. I focused mainly on closing the dispersion and dispersion’, and just got the betas to be reasonable, but not matched to any specific value. None of the magnets are maxed out (Jay – feel free to correct me if I’m wrong there!), so there should still be some flexibility built in.
  5.  For now (relevant to the JLab folks who know our system), don’t assume the names of the magnets are correct. I iterated magnet names in my own way, and some of them don’t reflect the names of a real magnet. It was for my own book keeping.

Any and all advice and feedback welcome! Have a great week!

Cheers!
Ryan

Dr. Ryan Bodenstein (he/him)
Staff Scientist II – Center for Advanced Study of Accelerators (CASA)
[image001.jpg]
12000 Jefferson Avenue
Newport News, VA 23606
United States of America
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