<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Trebuchet MS";
panose-1:2 11 6 3 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
h1
{mso-style-priority:9;
mso-style-link:"Heading 1 Char";
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:19.0pt;
font-family:"Calibri",sans-serif;
font-weight:bold;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:none none;}
span.Heading1Char
{mso-style-name:"Heading 1 Char";
mso-style-priority:9;
mso-style-link:"Heading 1";
font-family:"Calibri Light",sans-serif;
color:#2F5496;}
p.author-datetime1, li.author-datetime1, div.author-datetime1
{mso-style-name:author-datetime1;
margin-top:1.2pt;
margin-right:0in;
margin-bottom:1.2pt;
margin-left:0in;
font-size:10.5pt;
font-family:"Calibri",sans-serif;
font-weight:bold;}
span.EmailStyle27
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:595090833;
mso-list-template-ids:-1740222892;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:"Courier New";
mso-bidi-font-family:"Times New Roman";}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal">I see a clear correlation between beam current and vertical position on 2H01. When beam current goes up position goes down and vice versa. Among other possibilities, it may be an indication of the beam energy instabilities.<o:p></o:p></p>
<p class="MsoNormal">I made a log entry: <a href="https://logbooks.jlab.org/entry/4124290">
https://logbooks.jlab.org/entry/4124290</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Stuart, pass this along to the crew chief and PD.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">-Eugene<o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt">
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> sfegan@jlab.org <sfegan@jlab.org> <br>
<b>Sent:</b> Saturday, February 04, 2023 11:30<br>
<b>To:</b> Eugene Pasyuk <pasyuk@jlab.org>; rgc@jlab.org; Stepan Stepanyan <stepanya@jlab.org><br>
<b>Subject:</b> [New Logentry] RC Weekend Update, February 4, 2023<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div id="center">
<div id="main">
<h1><span style="font-size:15.0pt;font-family:"Trebuchet MS",sans-serif;color:#555555"><a href="https://logbooks.jlab.org/entry/4124252">RC Weekend Update, February 4, 2023</a>
<o:p></o:p></span></h1>
<div>
<ul type="disc">
<li class="MsoNormal" style="color:#555555;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif"><a href="https://logbooks.jlab.org/entry/4124252/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">
<span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif"><a href="https://logbooks.jlab.org/entry/4124252/delete?destination=email/send">Delete</a><o:p></o:p></span></li></ul>
</div>
<div>
<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/4124252">4124252</a>. Submitted by <a href="https://logbooks.jlab.org/user/sfegan">
sfegan</a> on <a href="https://logbooks.jlab.org/entries?start_date=1675524409&end_date=1675531609&book=HBLOG">
Sat, 02/04/2023 - 11:26</a>. <o:p></o:p></span></p>
<table class="MsoNormalTable" border="0" cellpadding="0">
<tbody>
<tr>
<td width="15%" style="width:15.0%;padding:1.2pt 1.2pt 1.2pt 1.2pt">
<p class="MsoNormal" style="mso-margin-top-alt:12.0pt;margin-right:0in;margin-bottom:12.0pt;margin-left:0in">
<b><span style="font-size:8.5pt;font-family:"Trebuchet MS",sans-serif">Logbooks: <o:p>
</o:p></span></b></p>
</td>
<td width="0" style="width:.3pt;padding:1.2pt 1.2pt 1.2pt 1.2pt">
<p class="MsoNormal" style="mso-margin-top-alt:12.0pt;margin-right:0in;margin-bottom:12.0pt;margin-left:0in">
<span style="font-size:8.5pt;font-family:"Trebuchet MS",sans-serif"><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td width="15%" style="width:15.0%;padding:1.2pt 1.2pt 1.2pt 1.2pt">
<p class="MsoNormal" style="mso-margin-top-alt:12.0pt;margin-right:0in;margin-bottom:12.0pt;margin-left:0in">
<b><span style="font-size:8.5pt;font-family:"Trebuchet MS",sans-serif">Entry Makers:
<o:p></o:p></span></b></p>
</td>
<td width="0" style="width:.3pt;padding:1.2pt 1.2pt 1.2pt 1.2pt">
<p class="MsoNormal" style="mso-margin-top-alt:12.0pt;margin-right:0in;margin-bottom:12.0pt;margin-left:0in">
<span style="font-size:8.5pt;font-family:"Trebuchet MS",sans-serif">sfegan<o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<p><strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Day Shift</span></strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555"> (<a href="https://logbooks.jlab.org/entry/4123371">https://logbooks.jlab.org/entry/4123371</a>):<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Half wave plate has been changed and continuing production running on ND3 @4nA, some minor DAQ maintenance between runs<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555"> <o:p></o:p></span></p>
<p><strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Swing Shift</span></strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555"> (<a href="https://logbooks.jlab.org/entry/4123637">https://logbooks.jlab.org/entry/4123637</a>):<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Continued data taking, RICH4 crash, and a subsequent DAQ crash after restore. Experts called and everything restored<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555"> <o:p></o:p></span></p>
<p><strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Owl Shift</span></strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555"> (<a href="https://logbooks.jlab.org/entry/4123903">https://logbooks.jlab.org/entry/4123903</a>):<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Overnight production running, sudden drop in polarisation around 2.30am (<a href="https://logbooks.jlab.org/entry/4123964">https://logbooks.jlab.org/entry/4123964</a>), this
recovered, then dropped again. Subsequent investigation by target experts tracked the problem down to drops in the helium bath level (<a href="https://logbooks.jlab.org/entry/4124207">https://logbooks.jlab.org/entry/4124207</a>). Polarisation recovered to
~38%<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555"> <o:p></o:p></span></p>
<p><strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Short Term Plan</span></strong><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">: Continuing production running on ND3 on Saturday,
and at time of writing, arranging for target change to solid targets on Sunday. This will minimise hall access over the weekend, and maybe allow the RC to watch the rugby(!)<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555"> <o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">We will not have an RC meeting today, but feel free to drop in on the counting room zoom session to check in if there's anything to discuss or just to say hello;
<a href="https://jlab-org.zoomgov.com/j/1619881100">https://jlab-org.zoomgov.com/j/1619881100</a> (passcode 927417). The shift crew will be here, and the RC will pop in and out, occaisionally enjoying today's biscuit, which is...<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Biscuit of the day: Penguin<o:p></o:p></span></p>
<p><span style="font-size:9.5pt;font-family:"Trebuchet MS",sans-serif;color:#555555">Penguins are brand name of a chocolate covered biscuit bar consisting of two layers of biscuit, filled with chocolate cream. First produced in 1932 by Macdonald Biscuits in
Glasgow, Scotland, Penguins are based on a chocolate covered sandwich biscuit seen by the company's founder in Antwerp. Now manufactured by McVitie's, each wrapper has a joke printed on it (example: "why are penguins shops so busy? Because the fish fillet")
and features penguins depicted in humourous situations or pastiches of famous works of art. Side note: a similar biscuit, the Tim Tam, is based on the Penguin and is popular in Australia.<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>