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<p class="MsoNormal">The vertical raster size was increased Vpp from 3.1 to 3.3 V yesterday morning. The raster diameter now is close to 19 mm. The density of NH3 looks more uniform after annealing manipulation.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-Eugene<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> Rgc <rgc-bounces@jlab.org> <b>On Behalf Of </b>
Bryan McKinnon via Rgc<br>
<b>Sent:</b> Monday, November 07, 2022 07:45<br>
<b>To:</b> rgc@jlab.org<br>
<b>Subject:</b> [Rgc] [Revised Logentry] RC Daily Summary - 7 November<o:p></o:p></p>
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<h1><span style="font-size:15.0pt;font-family:"Trebuchet MS",sans-serif;color:#555555"><a href="https://logbooks.jlab.org/entry/4078002">RC Daily Summary - 7 November</a>
<o:p></o:p></span></h1>
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<span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif"><a href="https://logbooks.jlab.org/entry/4078002/edit?destination=email/send">Edit</a><o:p></o:p></span></li><li class="MsoNormal" style="color:#555555;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
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<p class="author-datetime1"><span style="font-size:8.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Lognumber
<a href="https://logbooks.jlab.org/entry/4078002">4078002</a>. Submitted by <a href="https://logbooks.jlab.org/user/mckinnon">
mckinnon</a> on <a href="https://logbooks.jlab.org/entries?start_date=1667818577&end_date=1667825777&book=HBLOG">
Mon, 11/07/2022 - 06:56</a>. <o:p></o:p></span></p>
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<span style="font-size:8.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Last updated on Mon, 11/07/2022 - 07:40<o:p></o:p></span></p>
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<span style="font-size:8.5pt;font-family:"Trebuchet MS",sans-serif">mckinnon<o:p></o:p></span></p>
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<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Another challenging 24 hours of beam delivery and tuning.
<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Day shift began with the tagger degaussing. Once we were ready for beam delivery, MCC could not send more than 4nA due to our halos tripping the FSD.<br>
Upstream halo was an order of magnitude higher, midstream was a a factor of 2 higher. Indication of bleadthrough. We worked with Eugene to check raster and beam positions whilst also having MCC check upstream beam. They closed our slit slightly and the beam
looked good. A new position on 2H01 x was established as -1.8.<br>
Shift ends in production.<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Swing shift continues was production data taking. Target polarisation is ~78%.<br>
Around 7pm the beam is becoming very unstable and trippy. By 11pm MCC inform us that they are again unable to ramp up our beam. By 1:45am we are back in production running at 8nA and continuing....<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Run plan (pre-7:45 RC and 8:00 MCC Ops meeting) for today is to take NH3+ data and hope for some stability.
<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">RC meeting today at 2pm<o:p></o:p></span></p>
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