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Folks,<br>
<br>
Find the notes below and at<br>
<br>
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_May_18,_2015">https://halldweb.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_May_18,_2015</a><br>
<br>
-- Mark<br>
<br>
________________________________<br>
<br>
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<span dir="auto">Private:Hall D Staff Meeting, May 18, 2015</span><br>
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<div id="siteSub">From GlueXWiki</div>
<div id="mw-content-text" dir="ltr" class="mw-content-ltr"
lang="en">Present: Eugene Chudakov (chair), Alexandre
Deur, Hovanes Egiyan, Sergey Furletov, Mark Ito, David
Lawrence, Paul Mattione, Serguei Pozdniakov, Elton Smith,
Sascha Somov, Justin Stevens, Simon Taylor, Beni Zihlmann
<br>
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<br>
<span class="mw-headline" id="Eugene">Eugene</span><br>
<ul>
<li> NSAC meets July 16 on long range plan</li>
<li> S&T review July 30[?]</li>
<li> Solenoid
<ul>
<li> ad hoc committee met
<ul>
<li> same people reviewed 1st quench</li>
<li> no smoking gun</li>
</ul>
</li>
<li> magnet at 300 A now, nothing very unusual seen
<ul>
<li> 60 Hz ripple on power supply seen, could be
instrumental</li>
<li> ramping up, coil 2 A, oscillation observed,
seen on pick-up coil as well, in range from
10-40 A.</li>
<li> ramping down, at low current (< 100 A),
spikes seen</li>
<li> cryo effect, motion effect not ruled out</li>
<li> low current tests done</li>
</ul>
</li>
<li> Physics will conduct a review</li>
<li> will warm up to liquid N temp., probably next
week
<ul>
<li> refrigerator has to go to 300 K</li>
</ul>
</li>
<li> flux jumping still a possibility</li>
<li> training quenches still a possibility
<ul>
<li> in this case going to 1500 A would help in
long run</li>
</ul>
</li>
<li> lost less than 1/2 of He in recent quench, <
1000 liters, about $3k
<ul>
<li> does not make sense to build He recovery
system for $200k and a year of effort</li>
</ul>
</li>
</ul>
</li>
</ul>
<br>
Eugene asked for personal lists of tasks now that run has
ended:
<br>
<br>
<span class="mw-headline" id="David">David</span><br>
<ul>
<li> translations tables: system to edit, keep history</li>
<li> simulations for CPP, MWPC design</li>
</ul>
<br>
<span class="mw-headline" id="Sergey_F.">Sergey F.</span><br>
<ul>
<li> DAQ: why hardware not working at high rate?</li>
<li> FADC-125 problem</li>
<li> in Fall event builder worked will, but in Spring
problems
<ul>
<li> need to control which NIC is used</li>
</ul>
</li>
<li> should we keep things on in hall? crates: yes,
detectors: it depends</li>
<li> chamber tests with Lubomir, hard to find problems
<ul>
<li> huge background in tagger hall</li>
<li> new home? behind pair spect.?</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Elton">Elton</span><br>
<ul>
<li> firmware for F-250: specify what we want</li>
<li> FCAL familiarization
<ul>
<li> understand trigger for hadrons for CPP</li>
</ul>
</li>
<li> calibration, BCAL, layer 4, using μ decays</li>
</ul>
<br>
<span class="mw-headline" id="Simon">Simon</span><br>
<ul>
<li> using long cosmic run for CDC calibration</li>
<li> measuring efficiency of chambers from Spring run</li>
<li> η studies</li>
</ul>
<br>
<span class="mw-headline" id="Beni">Beni</span><br>
<ul>
<li> TOF timing calibration</li>
<li> TOF energy calibration</li>
<li> look at CDC issues
<ul>
<li> drift time spectra, mystery of long times</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Mark">Mark</span><br>
<ul>
<li>codeprofiling</li>
<li>git conversion</li>
<li>version management</li>
<li>offline web page</li>
<li>data challenge 3</li>
<li>spring run simulations</li>
<li>calibration, TOF, start counter</li>
</ul>
<br>
<span class="mw-headline" id="Alexandre">Alexandre</span><br>
<ul>
<li> analyzing beamline data from the last run</li>
</ul>
<br>
<span class="mw-headline" id="Sascha">Sascha</span><br>
<ul>
<li> understand trigger performance
<ul>
<li> reconstruct trigger thresholds</li>
<li> some runs not good</li>
<li> more monitoring of read-out lists</li>
<li> track trigger path</li>
<li> run playback with different configurations</li>
</ul>
</li>
<li> pair spect.
<ul>
<li> coherent peak seen</li>
<li> integrate field map</li>
<li> put into reconstruction</li>
</ul>
</li>
<li> proposal for production of ω</li>
<li> η rare decays
<ul>
<li> implement island algorithm</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Justin">Justin</span><br>
<ul>
<li> PR slide, coherent peak and φ-distribution of ρ
polarization
<ul>
<li> continue on analysis, produce note</li>
</ul>
</li>
<li> DIRC
<ul>
<li> MAPMTs, with CLAS design, fits in $2M cap</li>
<li> internal GlueX review, end of summer</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Sergey_P.">Sergey P.</span><br>
<ul>
<li> 2 independent servers for hardware control from
inventory database
<ul>
<li> improvements in monitoring and control</li>
<li> prepare database for further usage</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Paul">Paul</span><br>
<ul>
<li> RF monitoring, calibration, documentation
<ul>
<li> 100 ps jitter seen</li>
</ul>
</li>
<li> scaler GUIs
<ul>
<li> start counter done</li>
<li> Hovanes has added needed waveform records</li>
</ul>
</li>
<li> GlueX talk at Users' Meeting</li>
<li> offline monitoring, upgrade of scripts</li>
<li> analysis: better documentation on manpower
deployment</li>
<li> reconstruction monitoring: tracking efficiencies,
resolution</li>
<li> amplitude analysis: proposing changes to AmpTools</li>
</ul>
<br>
<span class="mw-headline" id="Hovanes">Hovanes</span><br>
<ul>
<li> FCAL voltage control: improvements, but fixes</li>
<li> microscope voltage controls: stand-alone scripts
only now</li>
<li> motor control for microscope support</li>
<li> scaler read-out</li>
<li> discriminator threshold read-out</li>
<li> will archive scaler values, huge increase in amount
of data
<ul>
<li> dead bands have to be set, usual scheme of
absolute or relative dead bands not appropriate</li>
</ul>
</li>
<li> Nerses is working on
<ul>
<li> missing HV alarms, with Lubomir</li>
<li> re-organization of IOC launching</li>
</ul>
</li>
</ul>
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