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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Minutes of Hall A Group Meeting: March 12, 2019<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoListParagraphCxSpFirst" style="text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Steve Wood<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">No Senior Staff meeting<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Make sure you go to new timesheet training<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto">
<span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Douglas Higinbotham<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Evan will be going to Theory, this is his last weekly meeting<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Arun Tadepalli & Scott Barcus joining us as new postdocs<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto">
<span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Jessie Butler<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Continue to support APEX experiment<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">The beam was off for most of the week so we took the opportunity to go in the hall and check all vacuum & cryogenic systems<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">c.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Changed polarity of R-HRS and both correctors at the beginning of the week and then changed them back on Friday after the collaboration took a
few hours of data<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">d.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Tuesday evening there was an issue in the hall in which the RQ3 & R-dipole were over-filling with helium. We were able to power down the magnets
& close the fill valves to control the problem overnight before addressing the issue the next morning. It appears to have been some tuning issues within the system that created the problem<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">e.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Received & QA the target chamber downstream flange & took it to the Machine Shop to have holes put in it for Survey & Alignment<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">f.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Repackaged & shipped PREX septum transitions back to the manufacturer after discovering they were fabricated with the wrong downstream flange<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;mso-list:l0 level2 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">g.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Continue to work on fitting PREX septum coils and fabricating LCW lines<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:1.0in;mso-add-space:auto">
<span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Featured speaker: Simona Malace, Moller Polarimetry
<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoListParagraphCxSpLast" style="text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif"><span style="mso-list:Ignore">5.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt;line-height:106%;font-family:"Times New Roman",serif">Run coordinator – Ye Tian<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Stephanie Tysor<o:p></o:p></p>
<p class="MsoNormal">Thomas Jefferson National Accelerator Facility<o:p></o:p></p>
<p class="MsoNormal">Physics Division<o:p></o:p></p>
<p class="MsoNormal">Hall A Administrative Assistant<br>
(office)<a href="callto:757-269-6005"><span style="color:blue">757-269-6005</span></a> (fax)<a href="callto:757-269-5235"><span style="color:blue">757-269-5235</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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