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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,_October_12,_2020">here</a>
and below.</p>
<p> -- Mark</p>
<p>_______________________________________</p>
<p> </p>
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<h1 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">Hall D Staff Meeting, October 12, 2020</span></h1>
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<h2><span class="mw-headline" id="Announcements.2C_Eugene">Announcements,
Eugene</span></h2>
<ul>
<li> Accelerator work during SAD ran into obstacles
<ul>
<li> chilled water</li>
<li> cryo</li>
</ul>
</li>
<li> HD-Ice test beam, 10 MeV facility in test lab having
recent successes</li>
<li> Knee injury reported on-site, PPE recommendations were
sent out</li>
<li> Appraisal cycle is coming soon</li>
<li> Research fund are tight in Physics; may impair ability
to pay for outside students and postdocs</li>
<li> Public Health Emergency charge code extended until
November, but use is discouraged</li>
</ul>
<h2><span class="mw-headline" id="Tim">Tim</span></h2>
<ul>
<li> other than work in Hall, with Stephanie Worthington,
preparing design packages for CPP, want to procure items
before end of FY20</li>
</ul>
<h2><span class="mw-headline" id="Alex_A.">Alex A.</span></h2>
<ul>
<li> keeping farm busy, production and analysis launches
<ul>
<li> production also running at NERSC and PSC.</li>
<li> production at IU coming soon</li>
</ul>
</li>
<li> ρ SDME work, looking at 2018 data</li>
<li> open charm channels should be in analysis launches,
starting to look</li>
</ul>
<h2><span class="mw-headline" id="Sascha">Sascha</span></h2>
<ul>
<li> working on PS timing for PrimEx runs, for luminosity
<ul>
<li> tagger microscope time-walk issues</li>
</ul>
</li>
<li> 19 crystals looked at
<ul>
<li> 2 with discoloration, may have to be sent back</li>
<li> SICCAS crystals will be sent shortly</li>
</ul>
</li>
<li> CompCal on the floor in hall
<ul>
<li> want to move parts from the Hall to the lab</li>
<li> divider test during run: some did not work, need
bench testing</li>
</ul>
</li>
</ul>
<h2><span class="mw-headline" id="Alexandre">Alexandre</span></h2>
<ul>
<li> working on papers
<ol>
<li> result from Hall A, GDH on neutron</li>
<li> result from Hall B, GDH on proton</li>
<li> starting writing on combined result</li>
</ol>
</li>
<li> Hall D GDH: addressing various topics</li>
<li> will start DNP talk on hadronic structure using [?] QCD
approach</li>
</ul>
<h2><span class="mw-headline" id="Beni">Beni</span></h2>
<ul>
<li> TOF: looking at data to see which PMT's need
replacement</li>
<li> CDC: studying why rate increase significantly at the
end of the run. conductive dust perhaps?</li>
<li> Analysis: guidance for handling event statistics and
uniqueness tracking</li>
<li> EIC: working on cost analysis for PID detectors</li>
</ul>
<h2><span class="mw-headline" id="Elton">Elton</span></h2>
<ul>
<li> NIM paper: collecting info for author credit list</li>
<li> calorimeters
<ul>
<li> coordinating photon reconstruction task force
<ul>
<li> FIU: photon efficiency using η→π<sup>+</sup>π<sup>−</sup>π<sup>0</sup></li>
</ul>
</li>
<li> validation of 2020 data ongoing</li>
</ul>
</li>
<li> CPP:
<ul>
<li> following upon beam test</li>
<li> supporting mechanical design</li>
</ul>
</li>
<li> NPP: not much progress since busy time preparing for
PAC</li>
<li> BDX: ran during Spring, Hall A has high current and low
energy, good test</li>
<li> work on NIM paper[?]</li>
</ul>
<h2><span class="mw-headline" id="Hovanes">Hovanes</span></h2>
<ul>
<li> following up on issues from run
<ul>
<li> HV communication loss</li>
<li> FDC interlock problem[?]</li>
</ul>
</li>
<li> KLF collaboration
<ul>
<li> doing simulations with FLUKA for compact photon
source
<ul>
<li> approach follows that of Gabriel Niculescu</li>
</ul>
</li>
</ul>
</li>
</ul>
<h2><span class="mw-headline" id="Igal">Igal</span></h2>
<ul>
<li> PrimEx: working on calibration, almost finished</li>
<li> JEF: working on MC simulation of scalar production in η
decay
<ul>
<li> developing figure of merit for signal over
background</li>
<li> tuning simulation</li>
</ul>
</li>
<li> tracking vertexing detector design
<ul>
<li> replace start counter</li>
</ul>
</li>
<li> LOI for Snowmass, new physics with photon beam
experiments</li>
</ul>
<h2><span class="mw-headline" id="Keigo">Keigo</span></h2>
<ul>
<li> looked at 2020 straight track alignment using Millipede
for FDC, not much movement</li>
<li> looking at γp→K<sup>*0</sup>X</li>
</ul>
<h2><span class="mw-headline" id="Lubomir">Lubomir</span></h2>
<ul>
<li> working on 2nd version of analysis note for 2nd J/ψ
paper
<ul>
<li> re-do simulation: J/ψ and BH</li>
<li> look at p-pbar with mass in J/ψ region, no dip seen
in p-pbar</li>
</ul>
</li>
<li> paper on J/ψ scattering length with Igor Stravosky
submitted to PRC</li>
<li> analyzing data GEM/TRD in front of DIRC, response to
pions</li>
<li> thinking about large scale TRD detector</li>
</ul>
<h2><span class="mw-headline" id="Mark_I.">Mark I.</span></h2>
<ul>
<li> GlueX software builds on Ubuntu 20 and CentOS 8 in
containers done</li>
<li> working on bggen simulation for NPP background studies</li>
<li> gave talk at OSG All-Hands meeting on JLab/BNL/EIC and
the Grid</li>
<li> Machine learning workshop (served on organizing
committee)</li>
<li> Future Trends in Nuclear Physics Computing (served on
organizing committee, moderated discussion at one of the
sessions)</li>
</ul>
<h2><span class="mw-headline" id="Mark_D.">Mark D.</span></h2>
<ul>
<li> FCAL: preparations for future runs, refurbish 200
bases?
<ul>
<li> make power system more robust against radiation
induced failures</li>
</ul>
</li>
<li> looking at ω SDMEs, 3π decay mode</li>
<li> reviewing paper</li>
</ul>
<h2><span class="mw-headline" id="Sergey">Sergey</span></h2>
<ul>
<li> resumed charm production analysis
<ul>
<li> work on converting REST to ROOT files</li>
<li> will run on DAQ farm</li>
</ul>
</li>
<li> analyzing GEM/TRD data with DIRC, looking at the
rejection factor</li>
<li> ran some analysis on FPGA, get less than microsecond
latency</li>
</ul>
<h2><span class="mw-headline" id="Simon">Simon</span></h2>
<ul>
<li> PID FOM in good state now, others can start to use it</li>
<li> working with Naomi Jarvis on CDC dE/dx measurement
<ul>
<li> alignment issue for π<sup>−</sup></li>
</ul>
</li>
<li> looking at final states with neutron detected</li>
<li> Λ<sub>c</sub> alternate analysis approach being
developed</li>
</ul>
<h2><span class="mw-headline" id="Eugene">Eugene</span></h2>
<ul>
<li> working on Yellow Report for EIC calorimeter group
<ul>
<li> BNL team focused on issues for a long time</li>
<li> JLab has experience with crystals</li>
<li> BNL pushing spaghetti calorimeter, novel
construction technique</li>
</ul>
</li>
<li> JEF grans turned down by NSF
<ul>
<li> will have to rely on our own resources</li>
</ul>
</li>
<li> Thinking about improving Hall D pair spectrometer as a
detector testing facility
<ul>
<li> EIC crystals with SiPM instrumentation will need
testing</li>
</ul>
</li>
</ul>
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