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<p class="MsoNormal"><span style="font-size:11.0pt">Many thanks, Stephen! Much appreciated.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Have a great weekend!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Cheers!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Ryan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Brooks, Stephen <sbrooks@bnl.gov><br>
<b>Date: </b>Friday, February 18, 2022 at 1:52 PM<br>
<b>To: </b>Alex Bogacz <bogacz@jlab.org>, ffa_cebaf_collab@jlab.org <ffa_cebaf_collab@jlab.org>, Ryan Bodenstein <ryanmb@jlab.org><br>
<b>Subject: </b>[EXTERNAL] FFA arc cells with correct scaling in sharepoint<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt">I applied the "rescalings" to the 4+4 turn (or 4+3) FFA design to get sensible magnets. The results are in:<br>
<br>
Optics > FFA Arcs > Jul'21_4+4_optimised<br>
<br>
There you can find: original lattice, component list output, betas etc. at a couple of match points at all the energies. Also pictures of magnets.<br>
<br>
For FFA2, I used "50% gradient scaling", which makes the magnets have 2cm vertical aperture in the centre and 8mm total midplane gap on the sides. For FFA1, I retained those apertures but used 75% gradient scaling, as otherwise the BF beam excursion became
very large horizontally. FFA1's lattice cell in the 4+4 design is a bit odd, with a short but high gradient BD and a weak, long and wide BF. The magnets are pretty reasonable despite this, though, so perhaps it is "optimised" after all.<br>
<br>
-Stephen<br>
<br>
<br>
________________________________________<br>
From: FFA_CEBAF_Collab <ffa_cebaf_collab-bounces@jlab.org> on behalf of Ryan Bodenstein via FFA_CEBAF_Collab <ffa_cebaf_collab@jlab.org><br>
Sent: 18 February 2022 12:21<br>
To: Alex Bogacz; ffa_cebaf_collab@jlab.org<br>
Subject: Re: [FFA_CEBAF_Collab] FFA@CEBAF WG mtg. this Friday, Feb. 18 at 11:00 am<br>
<br>
Hello Colleagues,<br>
<br>
Another productive meeting! We discussed a lot of topics, and are likely going to be working and planning hard this week for the FOA and other work.<br>
<br>
I’ve attached the minutes to this email, and will upload them to the repository shortly.<br>
<br>
You all have a great weekend!<br>
<br>
Cheers!<br>
Ryan<br>
<br>
From: FFA_CEBAF_Collab <ffa_cebaf_collab-bounces@jlab.org> on behalf of Alex Bogacz <bogacz@jlab.org><br>
Date: Monday, February 14, 2022 at 6:04 PM<br>
To: ffa_cebaf_collab@jlab.org <ffa_cebaf_collab@jlab.org><br>
Subject: [FFA_CEBAF_Collab] FFA@CEBAF WG mtg. this Friday, Feb. 18 at 11:00 am<br>
Dear Colleagues,<br>
<br>
We will continue design work on adiabatic arc design, this Friday, Feb. 18 at 11:00 am.<br>
* Adiabatic arc design update – Vasiliy/Randy<br>
* AOB – All<br>
Please, follow a ZOOM invitation below.<br>
Cheers,<br>
Alex<br>
___________________________________<br>
S. Alex Bogacz,<br>
Accelerator Physics Group Leader<br>
Center for Advanced Studies of Accelerators<br>
Jefferson Lab<br>
12000 Jefferson Avenue,<x-apple-data-detectors://8><br>
<br>
<br>
ZOOM connection:<br>
<br>
The link is here: <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1614898082-3Fpwd-3DTnUzMS81M2sxbDZIbERJU01tYkJCQT09&d=DwIF-g&c=CJqEzB1piLOyyvZjb8YUQw&r=r9fAyyFpL5KPjO3Oob62MQ&m=YHhPeY2V5Z1hsabbc6zvKInQtGLV-0nC2QMnQXypKjy7r0JXi6ff_rfOzaqQwNMH&s=41Gm1Ey6rK6ROVuD1fCF40Oaerf2H_RzA8tUW0mujyQ&e=">
https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1614898082-3Fpwd-3DTnUzMS81M2sxbDZIbERJU01tYkJCQT09&d=DwIF-g&c=CJqEzB1piLOyyvZjb8YUQw&r=r9fAyyFpL5KPjO3Oob62MQ&m=YHhPeY2V5Z1hsabbc6zvKInQtGLV-0nC2QMnQXypKjy7r0JXi6ff_rfOzaqQwNMH&s=41Gm1Ey6rK6ROVuD1fCF40Oaerf2H_RzA8tUW0mujyQ&e=</a>
<<a href="https://urldefense.com/v3/__https:/jlab-org.zoomgov.com/j/1614898082?pwd=TnUzMS81M2sxbDZIbERJU01tYkJCQT09__;!!P4SdNyxKAPE!Rq2Ce3MBdEjpHku5Dv58r-sMHF6v3M416sbNlfr2lMVef_5Rb5lqDL1dnYgAHyU$">https://urldefense.com/v3/__https://jlab-org.zoomgov.com/j/1614898082?pwd=TnUzMS81M2sxbDZIbERJU01tYkJCQT09__;!!P4SdNyxKAPE!Rq2Ce3MBdEjpHku5Dv58r-sMHF6v3M416sbNlfr2lMVef_5Rb5lqDL1dnYgAHyU$</a>><br>
<br>
In case of problems, the zoom room is below:<br>
Meeting ID: 161 489 8082<br>
Passcode: 123456<br>
<br>
<o:p></o:p></span></p>
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