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We spoke a few weeks ago about doing option 1, to check for reproducibility of the machine as well. If the machine comes up and restores well it is good knowledge. Having a machine that has already shown to reproduce, means that we can back up then and do
the M56 piece in Arc 1 and know that we can back out if needed. Once we have tested the Arc 1 Optics, and how bad the rest of the machine is we can then assess whether or not to install the optics, or back out. It also allows us to, delay the Arc 1 piece
for future beam studies, and move on to Physics if we run short of time. Just my 2 cents, and what I thought we had already decided upon.</div>
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Sorry I missed the meeting this afternoon. </div>
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-B</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> BTeam <bteam-bounces@jlab.org> on behalf of Yves Roblin <roblin@jlab.org><br>
<b>Sent:</b> Tuesday, April 21, 2020 2:11 PM<br>
<b>To:</b> bteam@jlab.org <bteam@jlab.org><br>
<b>Subject:</b> [BTeam] minutes of meeting 03/21/2020</font>
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We discussed the machine restore. Two plans were presented.</div>
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Option 1), spin up to 5 passes restoring from previous setup then launch into beam studies</div>
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to assess the correct M56 for ARC1 but not download it.</div>
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Option 2) spin up to 3R, try all the M56 lattices to find which one results in least correction. Download it, match it and resume setup.</div>
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<span style="color:rgb(0,0,0); font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">If going through option 2) also readjust the bcom from the start so that higher passes dont end up 2.5 % off.</span><br>
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Using the archiver, we can construct a baseline of what the east arc BLM activity was last time we ran with tune beam. We can refer to that to see if we reduce loss</div>
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<span style="color:rgb(0,0,0); font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">Both option 1) and 2) take about 2 weeks but option 1) can be shortened if we drop the beam studies since we can always do some of that later during regularly scheduled
beam studies.</span><br>
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Before spin up, we can walk the tunnel to check for misplaced/fallen shims in dipoles as well as any alignment issues on the east side.</div>
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