[Hallc_running] [New Logentry] RC Daily Update

cyero at jlab.org cyero at jlab.org
Mon Sep 7 09:35:02 EDT 2020

Logentry Text:
<b>Accelerator Status:</b>
  <li>Sep 06/07 Swing/Owl (yesterday, today):
      <li> RF cavity 2L11-1 CWWT fault not clearing. Cavity was bypassed. (17:24 - 17:48 ) <a href="https://logbooks.jlab.org/entry/3842543">2L11-1_bypassed</a> </li>
      <li> RSEP9A and ARC9A shunt mismatch (6:12 - ??).   <a href="https://logbooks.jlab.org/entry/3842901">RSEP9A_downtime</a>  </li>
  <li>Sep 07 Day (today):
      <li> As of 8:45, downtime due to RSEP9A and ARC9A shunt mismatch has been closed. Beam restored to Hall C at ~9:00  </li>
      <li> 9:00 MCC morning meeting update: The PD (Jay) informed accelerator beam studies (tomorrow) Sep 08 Swing 16:30 - 19:30 with beam restoration expected at ~ 20:00.
      MCC will not be able to support RadCon access tomorrow for Halls B/C during Swing Shift.</li>

<b>General Hall C Updates:</b>
  <li> Sep 06/07 Swing/Owl (yesterday, today):
      <li> Mingyu Chen updated the TO training slides with procedure for fitting pNMR, as there were issues with fitting program. See log-entry: <a href="https://logbooks.jlab.org/entry/3842395">pNMR_TO_update</a> </li>
      <li> d2n production data-taking continued during Sep 06 Swing, and at 22:04, IHWP = OUT, and will take ~8 hrs of "beam-on-target" </li>
      <li> Hall C beam energy drifted 1-2 MeV since Hall A Septum magnet tripped at ~2:30 (Sep 07 Owl). The effect on beam polarization seems to be negligible at first glance, but will need
	to confirm with d2n spokespeople.  <a href="https://logbooks.jlab.org/entry/3842953">HALLC:p_excursions</a> </li>
      <li> Beam Current Hitory during Sep 06/07 Swing/Owl:  <a href="https://logbooks.jlab.org/entry/3842753">Sep06_Swing</a>,  <a href="https://logbooks.jlab.org/entry/3843010">Sep07_Owl</a> </li>
  <li> Sep 07 Day (today):
      <li>Beam restored to Hall C at ~ 9:00. Beam profile checks. <a href="https://logbooks.jlab.org/entry/3843034">IHA3H07A</a>, <a href="https://logbooks.jlab.org/entry/3843040">IHA3H07B</a> </li>
      <li>d2n production data-taking at IHWP = OUT will resume after beam profile checks / Pol He3 scraping checks are concluded. We have collected ~358.3 min (5.97 hrs) of "beam-on-target" data as of end of Sep 07 Owl.
      We still need ~121.7 min. of "beam-on-target" data.</li>

<b>Recent NMR/pNMR Measurements:</b><br>
<li>Sep 06/07 (Swing/Owl):</li>
  <li> NMR:  04:00 | 41.3 %  <a href="https://logbooks.jlab.org/entry/3842500">https://logbooks.jlab.org/entry/3842500</a></li>
  <li> pNMR: 04:00 | 67.6 %  <a href="https://logbooks.jlab.org/entry/3842500">https://logbooks.jlab.org/entry/3842500</a></li>

  <li> NMR:  21:28 | 40.7 %  <a href="https://logbooks.jlab.org/entry/3842655">https://logbooks.jlab.org/entry/3842655</a></li>
  <li> pNMR: 21:28 | 39.5 %  <a href="https://logbooks.jlab.org/entry/3842655">https://logbooks.jlab.org/entry/3842655</a></li>

  <li> NMR:  02:07 | 39.9 %  <a href="https://logbooks.jlab.org/entry/3842793">https://logbooks.jlab.org/entry/3842793</a></li>
  <li> pNMR: 02:07 | 41.7 %  <a href="https://logbooks.jlab.org/entry/3842793">https://logbooks.jlab.org/entry/3842793</a></li>

<li>Sep 07 (Day):</li>
  <li> NMR:  07:06 | 39.5 %  <a href="https://logbooks.jlab.org/entry/3842931">https://logbooks.jlab.org/entry/3842931</a></li>
  <li> pNMR: 07:06 | 41.0 %  <a href="https://logbooks.jlab.org/entry/3842931">https://logbooks.jlab.org/entry/3842931</a></li>

<b>Recent IHWP Changes:</b><br>
<li>Sep 03 (Swing, as of 19:58) | IHWP = IN </li>
<li>Sep 04 (Owl, as of 04:00)   | IHWP = OUT <a href="https://logbooks.jlab.org/entry/3840776">https://logbooks.jlab.org/entry/3840776</a> </li>
<li>Sep 04 (Day, as of 12:01)   | IHWP = IN <a href="https://logbooks.jlab.org/entry/3841011">https://logbooks.jlab.org/entry/3841011</a> </li>
<li>Sep 05 (Day, as of 14:55)   | IHWP = OUT <a href="https://logbooks.jlab.org/entry/3841696">https://logbooks.jlab.org/entry/3841696</a> </li>
<li>Sep 06 (Owl, as of 07:00)   | IHWP = IN <a href="https://logbooks.jlab.org/entry/3842175">https://logbooks.jlab.org/entry/3842175</a> </li>
<li>Sep 06 (Swing, as of 22:04) | IHWP = OUT <a href="https://logbooks.jlab.org/entry/3842667">https://logbooks.jlab.org/entry/3842667</a> </li>

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