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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Mark Jones just let me know that Hall A has noq decided to delay the switch to 5<sup>th</sup> pass for a week. Will now likely happen starting at 7am on Monday April 28<sup>th</sup>. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">So they may now be available this week for the FFB beam study and it will be next week+ that we need to push for the higher power.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Best Wishes,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Douglas<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">BTeam <bteam-bounces@jlab.org> on behalf of Douglas Higinbotham via BTeam <bteam@jlab.org><br>
<b>Date: </b>Monday, April 21, 2025 at 6:26</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><span style="font-size:12.0pt;color:black">AM<br>
<b>To: </b>Ken Surles-Law <law@jlab.org>, BTeam <bteam@jlab.org>, Jay Benesch <benesch@jlab.org><br>
<b>Subject: </b>Re: [BTeam] proposal for end of Wednesday owl<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Hall A is not going to be available for beam most of this week as they are doing a major multi-day reconfiguration, so no to ideas that require beam to hall a for this Wednesday.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">The high current beam study to Hall C is ok if it helps, but to be clear Hall A is no going to high currents until after next weekend ( April 28th) as they have lots to do at moderate currents, 10-20 uA once
they are at fifth pass. I think part of Eduard 's point from our last discussion was to do the current push on the 28th or 29th with all parties needed for the push available. Of course, knowing in advance how hard/easy that is going to be is great and
can help planning . <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Just for a little more context, Hall A likely will work its way up in current slowly, just as they been doing at this pass, so do not expect a jump to 50 uA. Expect steps up over the course of many shifts
while they optimize their figure of merit.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">( 50 uA isn't even that high with hall c running low current, real total current push in the machine is likely when we are running sidis in c with hall a, my current numbers on the calendar for that period
are presently messed up and need to be revisited.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Best wishes,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Douglas <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Get <a href="https://aka.ms/AAb9ysg">
Outlook for Android</a><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt">From:</span></b><span style="font-size:11.0pt"> BTeam <bteam-bounces@jlab.org> on behalf of Ken Surles-Law via BTeam <bteam@jlab.org><br>
<b>Sent:</b> Monday, April 21, 2025 12:52:28 AM<br>
<b>To:</b> BTeam <bteam@jlab.org>; Jay Benesch <benesch@jlab.org><br>
<b>Subject:</b> Re: [BTeam] proposal for end of Wednesday owl<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Jay,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">An excellent idea. Can/should we also take the time to set up FFB for Hal l A? BSList? Who will we the POC?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Ken<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> BTeam <bteam-bounces@jlab.org> on behalf of Jay Benesch via BTeam
<bteam@jlab.org><br>
<b>Sent:</b> Sunday, April 20, 2025 7:38 PM<br>
<b>To:</b> BTeam <bteam@jlab.org><br>
<b>Subject:</b> [BTeam] proposal for end of Wednesday owl</span><span style="font-size:12.0pt">
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Wednesday is a maintenance day. I propose that one hour before we plan<br>
to take beam away from BCD we ask C to pull their target and turn off<br>
all the detector voltages. Then we put as much current as we can into<br>
the C dump. This will may identify RF and optics issues which have to<br>
be addressed before A switches to fifth pass. RF maintenance priorities<br>
could be adjusted. Optics work plans could be developed.<br>
_______________________________________________<br>
BTeam mailing list<br>
BTeam@jlab.org<br>
<a href="https://mailman.jlab.org/mailman/listinfo/bteam">https://mailman.jlab.org/mailman/listinfo/bteam</a><o:p></o:p></span></p>
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