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<p>Folks,</p>
<p>Please find the notes <a moz-do-not-send="true"
href="https://halldweb.jlab.org/wiki-private/index.php/Hall_D_Staff_Meeting,_April_20,_2020">here</a>
and below.</p>
<p> -- Mark</p>
<p> </p>
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<h1 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">Hall D Staff Meeting, April 20, 2020</span></h1>
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lang="en">
<p>Present: Fernando Barbosa, Eugene Chudakov (chair), Mark
Dalton, Alexandre Deur, Hovanes Egiyan, Sergey Furletov,
Mark Ito, Igal Jaegle, Keigo Mizutani, Lubomir Pentchev,
Patrizia Rossi, Elton Smith, Sascha Somov, Simon Taylor, Tim
Whitlatch, Beni Zihlmann
</p>
<h2><span class="mw-headline" id="Announcements.2C_Eugene">Announcements,
Eugene</span></h2>
<ul>
<li> Lab is considering scenarios for resumption of normal
operations. One option is to start with a six week run
this summer. No decisions yet.</li>
<li> The UGBoD requested a delay of a month in the PAC
schedule. No decisions here.</li>
</ul>
<h2><span class="mw-headline" id="Announcements.2C_Patrizia">Announcements,
Patrizia</span></h2>
<ul>
<li> Funding Opportunity Announcement (FOA): memo to ADs
soon on how to approach new areas of research at the Lab</li>
<li> LDRD: mandatory pre-proposal this time</li>
</ul>
<h2><span class="mw-headline" id="Problems_Working_Remotely">Problems
Working Remotely</span></h2>
<ul>
<li> Sascha: connection and/or response slow from time to
time.</li>
</ul>
<h2><span class="mw-headline" id="Alarms">Alarms</span></h2>
<ul>
<li> Tim: alarm from CDC gas at midnight a few nights ago.
<ul>
<li> CO<sub>2</sub> bottle switched over. Will need
attention in a few weeks.</li>
</ul>
</li>
<li> Beni: according to walk-through report from last
Friday, Paul Letta changed out the defective drive in Raid
3 and the alarms have stopped.
<ul>
<li> Sergey Raid 5 is partially degraded.</li>
</ul>
</li>
</ul>
<h2><span class="mw-headline" id="PrimEx_Data_Processing">PrimEx
Data Processing</span></h2>
<ul>
<li> Sascha: second monitoring launch is up next.</li>
<li> Igal: π<sup>0</sup> mass resolution from the FCAL using
new skims is much improved, expect to finish the
calibration this week</li>
<li> Beni: sees difference in accidental scaling factor when
using microscope vs. hodoscope, 1.05 vs. 1.1. Difference
not seen in other run periods. Tried reducing number of
bunches used from 12 to 2, but no change in results.</li>
<li> Requirement for having both ADC and TDC values for
luminosity-related hits in microscope being studied</li>
<li> Drew Smith working on additional position correction
for FCAL</li>
</ul>
<h2><span class="mw-headline" id="PAC_Preparation">PAC
Preparation</span></h2>
<h3><span class="mw-headline" id="SRC">SRC</span></h3>
<ul>
<li> Sascha: meeting held with Matt, Justin, and Liping on
strategy for jeopardy</li>
<li> physics is still interesting</li>
<li> preparing a 4-5 page report</li>
<li> planning stand-alone beam request for the PAC after
this one</li>
</ul>
<h3><span class="mw-headline" id="CPP.2FNPP">CPP/NPP</span></h3>
<ul>
<li> Elton: Rory preparing a report and slides for CPP
jeopardy</li>
<li> Review committee for NPP: Barry Ritchie and Joerg
Reinhold
<ul>
<li> received feedback</li>
<li> Joerg: focus on compatibility with CPP
<ul>
<li> target in CPP proposal mentions tin, in NPP
proposal lead, but since CPP proposal, CPP has
decided on lead, no conflict</li>
<li> trigger for CPP is TOF, not a good one for NPP,
but NPP wants to add calorimeter energy trigger in
parallel, rates need to be studied</li>
</ul>
</li>
<li> Barry: focus on backgrounds
<ul>
<li> draft weak on backgrounds, nuclear coherent
only background treated quantitatively</li>
<li> work on going to understand other backgrounds,
expect report by Collab. meeting</li>
</ul>
</li>
</ul>
</li>
</ul>
<h3><span class="mw-headline" id="GDH">GDH</span></h3>
<ul>
<li> Alexandre: met with review committee, Garth Huber and
Frank Nerling</li>
<li> Mark presented his APS talk</li>
<li> from Q&A with Garth and Frank:
<ul>
<li> some areas need more explanation for non-experts in
this physics</li>
<li> generally supportive</li>
<li> should get report this week</li>
</ul>
</li>
<li> Changes needed for proposal:
<ul>
<li> clarity mainly</li>
<li> committee suggests asking for more beam time at
half linac energy; do not pre-judge scheduling
considerations in proposal</li>
</ul>
</li>
</ul>
<h2><span class="mw-headline" id="Engineering">Engineering</span></h2>
<ul>
<li> Tim: CPP design meeting with principals this week</li>
<li> Bobby Bunton: doing 3D-printing of DIRC box airflow
improvers</li>
<li> Keith Blackburn: updating procedures</li>
<li> Scot Spiegel: working on summer SAD schedule</li>
<li> Mark Stevens: planning for possible 6-week run</li>
</ul>
<h2><span class="mw-headline" id="Electronics">Electronics</span></h2>
<ul>
<li> Fernando: looking at FCAL2 procurements and
installation</li>
<li> Need more read-out electronics and HV</li>
<li> Cables may have to be removed completely
<ul>
<li> cabling scheme had goal of equalizing rates in
FADCs</li>
<li> added geometrical complication</li>
</ul>
</li>
</ul>
<h2><span class="mw-headline" id="Procurements">Procurements</span></h2>
<ul>
<li> Eugene: it's that time of year
<ul>
<li> pass requests to Eugene</li>
<li> projects, replacements, spares</li>
<li> electronics for FCAL2, including HV supplies,
possible items
<ul>
<li> Fernando: starting to get quotes, pass any
other electronics requests? let him know</li>
</ul>
</li>
<li> Sascha: will need refurbished CCAL bases with gain
3X or 6X
<ul>
<li> summer: produce more active bases, 150 new
dividers</li>
</ul>
</li>
</ul>
</li>
</ul>
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