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At the LERF we anticipate needing a 250-350 keV polarized beam for injection into the QCM. Applying and maintaining this voltage reliably to the photogun electrode is challenging, with no arcs or damage to the high voltage cables, and for polarized GaAs requires
there be no field emission from the electrodes.</div>
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Carlos is traveling to Japan next week to talk about our experience using inverted high voltage insulators, and will have discussions to develop new insulators for these higher voltages. </div>
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At <b>today's meeting Carlos will give a dry run talk</b>, and a really good opportunity to learn more about this critical aspect of the photogun.</div>
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See you at 11am, by zoom in TL-2236, link info below.</div>
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Joe</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> PEPPo <peppo-bounces@jlab.org> on behalf of Andriy Ushakov via PEPPo <peppo@jlab.org><br>
<b>Sent:</b> Tuesday, September 19, 2023 11:08 AM<br>
<b>To:</b> peppo@jlab.org <peppo@jlab.org><br>
<b>Subject:</b> [PEPPo] Ce+BAF meeting, Wed. @ 11am in TL-2236 and Zoom</font>
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<span style="font-size:12.0pt">Dear Colleagues,</span></p>
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<span style="font-size:12.0pt">A quick reminder that tomorrow is our regular Ce+BAF meeting at 11am in TL-2236 and on Zoom.</span></p>
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<b><span style="font-size:12.0pt">Agenda</span></b></p>
<ul type="disc" style="margin-bottom: 0mm;margin-top:0mm">
<li class="x_MsoListParagraph" style="margin: 0mm 0mm 0.0001pt 36pt; font-size: 11pt; font-family: Calibri, sans-serif;margin-left:0mm">
<span style="font-size:12.0pt">(5) Joe - Update on LERF</span></li><li class="x_MsoListParagraph" style="margin: 0mm 0mm 0.0001pt 36pt; font-size: 11pt; font-family: Calibri, sans-serif;margin-left:0mm">
<span style="font-size:12.0pt">(5) Sami - Update on PhD thesis</span></li><li class="x_MsoListParagraph" style="margin: 0mm 0mm 0.0001pt 36pt; font-size: 11pt; font-family: Calibri, sans-serif;margin-left:0mm">
<span style="font-size:12.0pt">(5) Andriy - Update on simulations of power absorption</span></li><li class="x_MsoListParagraph" style="margin: 0mm 0mm 0.0001pt 36pt; font-size: 11pt; font-family: Calibri, sans-serif;margin-left:0mm">
<span style="font-size:12.0pt">(45) Carlos - Talk on HV insulators</span></li></ul>
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<span style="font-size:12.0pt">Zoom: <a href="https://jlab-org.zoomgov.com/j/1607642988?pwd=K2VMVlkwLzFwR0l0VjNWMFUvSGtrUT09" data-auth="NotApplicable" id="OWAf485cd06-d58b-256e-fa8b-b1b9e302e035" class="OWAAutoLink">
https://jlab-org.zoomgov.com/j/1607642988?pwd=K2VMVlkwLzFwR0l0VjNWMFUvSGtrUT09</a></span></p>
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<span style="font-size:12.0pt">SharePoint: <a href="https://jeffersonlab.sharepoint.com/sites/PositronSource/SitePages/2023-09-20-Ce+BAF-Meeting.aspx" data-auth="NotApplicable" id="OWA7939c5f2-19f2-1100-1b08-e9bf1b5b4661" class="OWAAutoLink">
Ce+BAF Meeting - September 20, 2023</a></span></p>
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<span style="font-size: 12pt; color: black;">If you have something to share, please edit the
<a href="https://jeffersonlab.sharepoint.com/sites/PositronSource/SitePages/Group-Meetings.aspx" data-auth="NotApplicable" id="OWA57ae85f2-5a29-3ae9-7088-a728d2c5ff60" class="OWAAutoLink">
meeting pages</a> or/and upload it to the <span><a href="https://jeffersonlab.sharepoint.com/:f:/r/sites/PositronSource/Shared%20Documents/Polarized%20Positron%20Beams%20for%20CEBAF/Meetings?csf=1&web=1&e=92EEl2" rel="noopener noreferrer" contenteditable="false" id="OWA14b0ed82-ca01-03ec-665c-531d40d4f838" class="OWAAutoLink BKfv6 none" data-ogsc="">meetings
folder</a></span>. </span><span style="font-size:12.0pt"></span></p>
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<span style="font-size:12.0pt">Kind regards,</span></p>
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<span style="font-size:12.0pt">Andriy</span></p>
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