[FFA_CEBAF_Collab] [EXTERNAL] Re: FFA at CEBAF WG mtg. this Friday, November 1

[Ryan Bodenstein]

Thanks Stephen!

I certainly think looking at your Option B would help reduce the burden on the splitters without adding nonlinear magnets. If it also helps the match conditions, all the better!

Cheers!
Ryan

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On Nov 1, 2024, at 1:54 PM, "Brooks, Stephen" <sbrooks at bnl.gov<mailto:sbrooks at bnl.gov>> wrote:

I wonder what would happen if you allowed permanent magnets in the splitter lines.  For example the sort of FDFDF "complex bend" Dejan was showing a picture of could allow bending without the dispersion getting too high.

The thing I think might be hard to solve that way is R56 (TOF is OK overall because separate lines).

I should mention I had an alternative lattice "B" in my IPAC24 paper that reduced the TOF and R56 by over a factor of two from the baseline, even with linear magnets, by using a slightly shorter cell.  One of the nonlinear field solutions does even better even with a long cell.  We could try and optimise a cell with the smallest TOF variation if that would help in the splitters.

     -Stephen

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From: FFA_CEBAF_Collab <ffa_cebaf_collab-bounces at jlab.org> on behalf of Ryan Bodenstein via FFA_CEBAF_Collab <ffa_cebaf_collab at jlab.org>
Sent: 01 November 2024 12:21
To: Alex Bogacz via FFA_CEBAF_Collab
Subject: Re: [FFA_CEBAF_Collab] FFA at CEBAF WG mtg. this Friday, November 1

Good afternoon, Colleagues!

Attached, you'll find our minutes (as well as uploaded).

You all have a great weekend!
Ryan



Dr. Ryan Bodenstein (he/him)

Staff Scientist II – Center for Advanced Studies of Accelerators (CASA)

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12000 Jefferson Avenue

Newport News, VA 23606

United States of America

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From: FFA_CEBAF_Collab <ffa_cebaf_collab-bounces at jlab.org> on behalf of Alex Bogacz via FFA_CEBAF_Collab <ffa_cebaf_collab at jlab.org>
Sent: Monday, October 28, 2024 5:38 PM
To: Alex Bogacz via FFA_CEBAF_Collab <ffa_cebaf_collab at jlab.org>
Subject: [FFA_CEBAF_Collab] FFA at CEBAF WG mtg. this Friday, November 1



Dear Colleagues,

We will continue our design efforts this Friday, November 1, at 11:00 am.

  *   Emittance budget update - Kirsten
  *   ‘White Paper’ on 22 GeV CEBAF - ALL
  *   AOB - ALL

Please, follow a ZOOM invitation below.

Cheers,

Alex

________________________________


S. Alex Bogacz,

Accelerator Physics Group Leader

Center for Advanced Studies of Accelerators

Jefferson Lab



ZOOM connection:

The link is here: https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1614898082-3Fpwd-3DTnUzMS81M2sxbDZIbERJU01tYkJCQT09&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=r9fAyyFpL5KPjO3Oob62MQ&m=7tjTb31CDVOsUPtmkIbvqGfE6m3u-zdjp8hlkIGO8v-rmhoea-Vhp5JqW4e-XrAr&s=RjlNUYMt6VvFaap6bn-EFFDrzW5U-kJot62OyWX5oPU&e= <https://urldefense.com/v3/__https://jlab-org.zoomgov.com/j/1614898082?pwd=TnUzMS81M2sxbDZIbERJU01tYkJCQT09__;!!P4SdNyxKAPE!ESlrzVdqOYAiY5-znU0RVw-fNeaE5MU6XuInaTRxK5aKxN8Gp81A4mfhjeUQgFQ1BdT3ygGdZV7rET-76H6F7RX2LTQ$>

In case of problems, the zoom room is below:

Meeting ID: 161 489 8082

Passcode: 123456

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