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</style><article id="node-725521" class="node node-logentry contextual-links-region article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3652606" rel="bookmark">Daily update</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3652606/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3652606/delete?destination=email/send">Delete</a></li></ul></div>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3652606" class="lognumber" data-lognumber="3652606">3652606</a>. Submitted by <a href="https://logbooks.jlab.org/user/sanghwa">sanghwa</a> on <time datetime="2019-02-13T14:53:09-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1550083989&end_date=1550091189&book=HALOG">Wed, 02/13/2019 - 14:53</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2019-02-13T14:55:49-0500" pubdate="pubdate">Wed, 02/13/2019 - 14:55</time></p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr></table></div>
<div class="logentry node-content">
<p>Hall Status:<br />
Configuration:<br />
- LHRS polarity: Now it's negative<br />
- RHRS polarity: It's now set to positive. Both arms are set for the production polarity settings.<br />
- Septum and corrector (APEX correctors) polarity: changed for LHRS (neg), RHRS (pos).<br />
- Sieve slits are both in OUT position now (for the coincidence time check)</p>
<p>Special task:<br />
- Beam centering redone with tune mode beam (no raster). Found three wires (<a href="https://logbooks.jlab.org/entry/3652177">https://logbooks.jlab.org/entry/3652177</a>).<br />
- Nominal beam position is updated to X: 2.2, Y: 1.8</p>
<p>Data taking:<br />
- SciFi test: <a href="https://logbooks.jlab.org/entry/3652013">https://logbooks.jlab.org/entry/3652013</a><br />
- LHRS optics data taken with Bogdan wire (two wires) and Optics targets<br />
- Coincidence timing work in progress</p>
<p>Notes/Fixes:<br />
- Had a problem with the Septum (remote) polarity control. Polarity change button in the GUI does not work. Septum polarity change is done by entering positive/negative current values (<a href="https://logbooks.jlab.org/entry/3651980">https://logbooks.jlab.org/entry/3651980</a>)<br />
- The polarity change for the correctors can only be done in the hall. We had another controlled access for this around 5pm.<br />
- RHRS dipole ramping rate </p>
<p>Accelerator:<br />
- Had a period of unstable beam delivery during the swing shift (few hours)<br />
- No planned Monday beam study next week at this moment<br />
- RF recovery on Tuesday</p>
<p>------------------------------------------<br />
We will have a daily meeting at 3:30 in the 2nd floor counting house conference room. </p>
<p>To join the Meeting: <a href="https://bluejeans.com/256205934">https://bluejeans.com/256205934</a></p>
<p>To join via Room System: Video Conferencing System: bjn.vc -or-199.48.152.152 Meeting ID : 256205934</p>
<p>To join via phone : 1) Dial:</p>
<p> +1.408.740.7256 (United States)<br />
+1.888.240.2560 (US Toll Free)<br />
+1.408.317.9253 (Alternate number)<br />
(see all numbers - <a href="http://bluejeans.com/numbers">http://bluejeans.com/numbers</a>)<br />
2) Enter Conference ID : 256205934</p>
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