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<span style="font-size:12.0pt;font-family:"Times New Roman",serif">Minutes of Hall A Group Meeting: March 16, 2021<o:p> </o:p></span></p>
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<span style="mso-list:ignore"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman""><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Thia Keppel<o:p> </o:p></span></p>
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<li><span style="font-size:12.0pt;line-height:107%;font-family:"Times New Roman",serif">No Senior Staff Meeting<o:p> </o:p></span></li></ol>
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<span style="mso-list:ignore"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman""><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Robin Wines<o:p> </o:p></span></p>
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<span style="mso-list:ignore"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">SBS
<o:p> </o:p></span></p>
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<li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Working on RICH detector and SIDIS layout
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Installation setups for GMn
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Compass design for GEn target
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Lifting analysis for CDet panel assembly
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Support of CDet
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">ECal details
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Flow calculations for GEM gas system<o:p> </o:p></span></li></ol>
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<span style="mso-list:ignore"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span></span></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">MOLLER<o:p> </o:p></span></p>
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<li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Pion lead donut and beampipe alignment mechanism
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Detector A-frame support
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Shielding details around target
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Reviewing blue platform modifications
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Starting shielding and support design around pivot area
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Continue on beamline<o:p> </o:p></span></li></ol>
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<span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black"><span style="mso-list:Ignore">c.<span style="font:7.0pt "Times New Roman"">
</span></span></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">SoLID
<o:p> </o:p></span></p>
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<li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Participation in review
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">CCR arrived and working on acceptance testing
<o:p> </o:p></span></li><li><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Continue prep for coil testing<o:p> </o:p></span></li></ol>
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<span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-font-family:"Times New Roman";color:black">Jessie Butler<o:p> </o:p></span></p>
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<li><span class="normaltextrun">Hall A crane is still down…<o:p> </o:p></span></li><li><span class="normaltextrun">Continue 2MVA power upgrade work (FML) – on-going<o:p> </o:p></span></li><li><span class="normaltextrun">Begin removing paint on overhead crane welds as prep work for inspection (FML)
<o:p> </o:p></span></li><li><span class="normaltextrun">Re-install eyewash station in Hall (FML)</span><o:p> </o:p></li><li><span class="normaltextrun">Inspect cables in area of ground water leak repair in Compton area – on-going (several groups involved)</span><o:p> </o:p></li><li><span class="normaltextrun">Begin laying out SBS floor plates with Barnhart (subcontractor)<o:p> </o:p></span></li><li><span class="normaltextrun">Worked with Hall A Designer (Chris) and S&A to verify SBS floor plates and BB track layout.</span><o:p> </o:p></li><li><span class="normaltextrun">Continue redoing hangers for LCW system<o:p> </o:p></span></li><li><span class="normaltextrun">Continue working on Counting House renovation – on-going</span><o:p> </o:p></li><li><span class="normaltextrun">Make additional shims needed for HCAL modules</span><o:p> </o:p></li><li><span class="normaltextrun">Breakdown SBS counterweight assembly in Test Lab</span><o:p> </o:p></li><li><span class="normaltextrun">Transport Remaining SBS floor plates to Hall<o:p> </o:p></span></li><li><span class="normaltextrun">Drill new lifting holes in SBS floor plates moved from Test Lab<o:p> </o:p></span></li><li><span class="normaltextrun">Work on property validation (all tech staff members)<o:p> </o:p></span></li></ol>
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<span class="normaltextrun"><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span></span><span class="normaltextrun">Jack Segal<o:p> </o:p></span></p>
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<li>Chuck has been busy with odds and ends for SBS and BB<o:p> </o:p></li><ol style="margin-bottom:0in">
<li><span style="mso-spacerun:yes"> </span>He and Ethan are looking at fitting some new power supplies into the old VME crates<o:p> </o:p></li></ol>
<li>Ethan has been cleaning up after some of his old projects, helping with the kerr effect, working on the polarity reversal switches for the corrector coils<o:p> </o:p></li><li>Heidi worked on finishing the cool down in Hall C and looking after various problems that were noted<o:p> </o:p></li><li>Joe was working on the HMS power supplies. He and Steven have noted some problems that they are looking into. I'm letting them work through it. If it goes on too long I'll wander down and see what I can do. Some fluster due to me not putting a safety course
on his JTA, I missed checking a box.<o:p> </o:p></li><li>Hall A will need to relocate the supply for the 4th quad and what do we do about the other three quad supplies that are old and of dubious reliability.
<o:p> </o:p></li><li>Whit got a chance to give me part numbers for relief valves and restrictor<br>
for the GEMs gas system. I now have them on hand. The 2MVA upgrade seems to be going along nicely in Hall A. Just trying to keep things moving.<o:p> </o:p></li></ol>
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<b><i>Stephanie Tysor</i></b></div>
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Hall A/C Administrative Assistant</div>
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Physics Division<br>
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Jefferson Lab</div>
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757-269-6005<br>
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