[Halla_running] [New Logentry] RC Update -- Monday 11/14 [Meeting at 3:30pm]

[pdbforce at jlab.org]

Logentry Text:
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<h2>Accelerator and Hall Status</h2>
<ul>
  <li>We will take the Hall to "Controlled Access" tomorrow as soon as possible to accommodate all the work requests. "Special Requests" section below contains a list of all the requests I have got so far.</li>
  <li>Since Hall B is going to be down for a while we have requested MCC to change Wien angle tomorrow to maximize the polarization to Hall A. They have agreed to do so.</li>
  <li>We will stick to our previous plan to do a Moller measurement on Thursday. <b>Should we take a mini spin dance measurement as well?</b>  Let's discuss at the RC meeting.</li>
  <li>If we stick to 45uA then MCC will not have to do a BLA calibration to Hall A BCM on Wednesday. They will have to do it if they need to send 60uA to both Hall A and C. <b>Should we cancel our plan to do BCM calibration on Wednesday then?</b> Let's discuss at the RC meeting.</li>
  <li>After a long downtime (4hrs+9hrs) we got beam back around 5pm yesterday. Then doing beam checkout and troubleshooting some BBGEM HV issue took another 3 hours. So, we could start production only around 8pm. </li>
  <li>Things have been smooth since then. MCC seems to be able to send us 45uA now. </li> 
  <li>We had some DAQ related issues this morning but they are fixed now. Thanks to GEM folks and Alex.</li>
</ul>

<h2>Run Plan for Today</h2>
<ul>
  <li>Continue taking production data with 45 uA beam current</li>
  <li>Do NMR sweeps every 2/3 hours</li>
</ul>

<h2>Polarization & Acc. Charge</h2>
<ul>
   <li>Total Accumulated Charge on He3: <b>4.632 C</b> </li>
   <li>Total Accumulated Charge on He3 (Corrected): <b>4.296 C</b> </li>
   <li>Polarization as of 01:33 pm: <b>42.4%</b> </li>
</ul>

<h2>Special Requests</h2> <b style="color:red;">Needs Attention!</b> 
MCC will do beam maintenance on Tuesday. They will take beam away ~ 6:45 am and the whole procedure will take at least one and half shift. If anyone wants to make an access to the hall during that time, then <b>please let me know before hand.</b> We have limited number of access keys, so proper coordination is absolutely necessary. <br>Here is the list of requests I have so far:<br> 
 <table>
  <tr>
    <th>Purpose</th>
    <th>Coordinator</th>
    <th>No. of Access Keys Needed</th>
    <th>Expected Work Time</th>
    <th>Preferred Time</th>
    <th>Tech Support Needed? </th>
  </tr>
  <tr>
    <td>Hall A walkthrough</td>
    <td>Simona Malace</td>
    <td> 3 </td>
    <td> 40 mins</td>
    <td>Before 4pm</td>
    <td> No </td>
  </tr>
  <tr>
    <td>Left dump and Compton IC diagnosis</td>
    <td>Jerry Kowal</td>
    <td> 3 </td>
    <td> 3 hrs</td>
    <td> 9 am </td>
    <td> No </td>
  </tr>
  <tr>
    <td>Work on GRINCH gas system</td>
    <td>Carlos Ayerbe</td>
    <td>2</td>
    <td>1 hr</td>
    <td></td>
    <td> No </td>
  </tr>
  <tr>
    <td>Work on 1st INFN Layer (SBS)</td>
    <td>Holly Szumila-Vance</td>
    <td>3</td>
    <td>1 hr</td>
    <td></td>
    <td> Yes, HV supply needs to be locked out </td>
  </tr>
</table>


<p><b>Let's meet today at the usual time (3:30 pm) to go over recent and future activities.</b><br>
Meeting details:<br>
Time: Daily at 3:30pm<br>
Location: Counting house conference room<br>
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Meeting ID: 161 903 2184<br>
Passcode: 260715<br>
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</p>


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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4083405
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