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Please find the notes below and at
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki-private/index.php/Hall_D_Staff_Meeting,_January_25,_2016">https://halldweb.jlab.org/wiki-private/index.php/Hall_D_Staff_Meeting,_January_25,_2016</a>
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<h1 id="firstHeading" class="firstHeading" style="font-weight:
bold;" lang="en"><span dir="auto">Hall D Staff Meeting, January
25, 2016</span></h1>
<div id="bodyContent" class="mw-body-content">
<div id="siteSub">From Gluex PRIVATE Wiki</div>
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<p style="widows: 3; orphans: 3; margin: 1em 0px; line-height:
1.2em;">Present: Eugene Chudakov (chair), Mark Dalton,
Alexandre Deur, Hovanes Egiyan, Sergey Furletov, Mark Ito,
David Lawrence, Paul Mattione, Lubomir Pentchev, Dmitry
Romanov, Patrizia Rossi, Elton Smith, Sascha Somov, Justin
Stevens, Simon Taylor, Zhenyu Zhang, Beni Zihlmann</p>
<div id="toc" class="toc" style="border: 1px solid rgb(170,
170, 170); padding: 5px; display: table; zoom: 1;
background-color: rgb(249, 249, 249);">
<div id="toctitle">
<h2 style="page-break-after: avoid; font-weight: bold;">Contents</h2>
</div>
<ul style="list-style-type: square;">
<li class="toclevel-1 tocsection-1"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Eugene"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">1</span><span
class="Apple-converted-space"> </span><span
class="toctext">Eugene</span></a></li>
<li class="toclevel-1 tocsection-2"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#David"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">2</span><span
class="Apple-converted-space"> </span><span
class="toctext">David</span></a></li>
<li class="toclevel-1 tocsection-3"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Elton"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">3</span><span
class="Apple-converted-space"> </span><span
class="toctext">Elton</span></a></li>
<li class="toclevel-1 tocsection-4"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Sergey"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">4</span><span
class="Apple-converted-space"> </span><span
class="toctext">Sergey</span></a></li>
<li class="toclevel-1 tocsection-5"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Simon"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">5</span><span
class="Apple-converted-space"> </span><span
class="toctext">Simon</span></a></li>
<li class="toclevel-1 tocsection-6"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Alexandre"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">6</span><span
class="Apple-converted-space"> </span><span
class="toctext">Alexandre</span></a></li>
<li class="toclevel-1 tocsection-7"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Sascha"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">7</span><span
class="Apple-converted-space"> </span><span
class="toctext">Sascha</span></a></li>
<li class="toclevel-1 tocsection-8"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Dmitry"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">8</span><span
class="Apple-converted-space"> </span><span
class="toctext">Dmitry</span></a></li>
<li class="toclevel-1 tocsection-9"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Zhenyu"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">9</span><span
class="Apple-converted-space"> </span><span
class="toctext">Zhenyu</span></a></li>
<li class="toclevel-1 tocsection-10"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Mark_I."
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">10</span><span
class="Apple-converted-space"> </span><span
class="toctext">Mark I.</span></a></li>
<li class="toclevel-1 tocsection-11"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Paul"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">11</span><span
class="Apple-converted-space"> </span><span
class="toctext">Paul</span></a></li>
<li class="toclevel-1 tocsection-12"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Beni"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">12</span><span
class="Apple-converted-space"> </span><span
class="toctext">Beni</span></a></li>
<li class="toclevel-1 tocsection-13"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Lubomir"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">13</span><span
class="Apple-converted-space"> </span><span
class="toctext">Lubomir</span></a></li>
<li class="toclevel-1 tocsection-14"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Mark_D."
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">14</span><span
class="Apple-converted-space"> </span><span
class="toctext">Mark D.</span></a></li>
<li class="toclevel-1 tocsection-15"><a
href="https://halldweb.jlab.org/wiki-private/index.php?title=Hall_D_Staff_Meeting,_January_25,_2016&printable=yes#Hovanes"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;"><span
class="tocnumber">15</span><span
class="Apple-converted-space"> </span><span
class="toctext">Hovanes</span></a></li>
</ul>
</div>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Eugene">Eugene</span></h2>
<ul style="list-style-type: square;">
<li>A federal tax form will come in the mail. You must
declare whether or not you have health insurance.</li>
<li>from Rolf: with the rise in the limit for new capital
projects from $2M to $5M, there may have to be some
reshuffling of funds, budget-wise
<ul style="list-style-type: square;">
<li>this may cause a problem with the calorimeter plug</li>
</ul>
</li>
<li>K-long workshop will be held next week; all are welcome</li>
<li>Alexander ...[?]... has accepted the post-doc position,
will start in May
<ul style="list-style-type: square;">
<li>search for the next post-doc position will start
soon</li>
</ul>
</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="David">David</span></h2>
<ul style="list-style-type: square;">
<li>working on implementing beginning of run record change
and related bookkeeping</li>
<li>Eugene: would like statistics on data errors</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Elton">Elton</span></h2>
<ul style="list-style-type: square;">
<li>Wrote note comparing SiPM parameters between JLab and
Santa Maria (UTFSM)
<ul style="list-style-type: square;">
<li>generally good agreement</li>
<li>UTFSM: lower gain, 25%</li>
<li>PDE differences above 1.2 V over breakdown</li>
<li>dark rates in agreement, internal inconsistencies in
UTFSM data</li>
<li>cross talk measurements agree</li>
</ul>
</li>
<li>gave colloquium at Hampton U.
<ul style="list-style-type: square;">
<li>we should have closer ties with local universities</li>
</ul>
</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Sergey">Sergey</span></h2>
<ul style="list-style-type: square;">
<li>performance of Event Builder (EB) fixed in CODA 3.05</li>
<li>new problem: in cosmics, EB crash intermittently, hours
to days</li>
<li>see F125 read-out problems, seen decoding data
<ul style="list-style-type: square;">
<li>with 1 kHz monitoring can only sample</li>
</ul>
</li>
<li>also working on begin of run events</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Simon">Simon</span></h2>
<ul style="list-style-type: square;">
<li>more work on study of multi-photon final states
<ul style="list-style-type: square;">
<li>will expand to pi+ and pi-</li>
</ul>
</li>
<li>doing simulations for K long workshop</li>
<li>analyzing recent field-off runs</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Alexandre">Alexandre</span></h2>
<ul style="list-style-type: square;">
<li>working on the run plan</li>
<li>analyzing beamline data from the Fall run</li>
<li>submitted the review paper last week</li>
<li>preparing a seminar at U. of Kentucky</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Sascha">Sascha</span></h2>
<ul style="list-style-type: square;">
<li>studying multiple trigger performance
<ul style="list-style-type: square;">
<li>bit patterns being produced now, available offline</li>
<li>tested on BCAL-LED/cosmic trigger</li>
</ul>
</li>
<li>FADC back in PS crate</li>
<li>hardware trigger energies compare well with offline</li>
<li>emulation of FCAL</li>
<li>pair spectrometer, 5 bad channels, down from 80</li>
<li>organizing workshop for nuclear target in GlueX in April
or May</li>
<li>tagger trigger:
<ul style="list-style-type: square;">
<li>data taken</li>
<li>cosmic test OK</li>
<li>Hai Dong and Ben Raydo working on Aurora
serialization, could save 240 ns in trigger latency</li>
</ul>
</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Dmitry">Dmitry</span></h2>
<ul style="list-style-type: square;">
<li>Discussion on offline access to online data, RCDB vs.
CCDB</li>
<li>RCDB work:
<ul style="list-style-type: square;">
<li>C++ interface to RCDB almost there</li>
<li>adding masked channel tables to RCDB</li>
<li>looking at variables proposed by Sean Dobbs</li>
<li>writing command-line interface, select runs based on
user-specified conditions</li>
<li>to handle DAQ crashes with no clean end-of-run,
write intermediate results</li>
</ul>
</li>
<li>CCDB work:
<ul style="list-style-type: square;">
<li>working on bug reports</li>
<li>Sean found problem with Python 2.71, not present in
2.76</li>
</ul>
</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Zhenyu">Zhenyu</span></h2>
<ul style="list-style-type: square;">
<li>looking at beam asymmetry for gamma p -> gamma gamma
p
<ul style="list-style-type: square;">
<li>see pi0, eta peaks</li>
</ul>
</li>
<li>gave a tour of Hall D to some visitors</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Mark_I.">Mark I.</span></h2>
<ul style="list-style-type: square;">
<li>working on paper software review materials</li>
<li>new release: sim-recon, v 1.9.0</li>
<li>gave talk on issues around offline access to RCDB vs.
CCDB at software meeting</li>
<li>discussed Lustre problems (lost files, outages) with
SciComp folks</li>
<li>extension of documentation on version management system</li>
<li>fielding git questions from collaborators</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Paul">Paul</span></h2>
<ul style="list-style-type: square;">
<li>overhaul of kinematic fitter
<ul style="list-style-type: square;">
<li>done, needs testing</li>
</ul>
</li>
<li>physics analysis workshop
<ul style="list-style-type: square;">
<li>organizing with Justin and Sean</li>
<li>speakers: Joe Dudek, Curtis Meyer, others...</li>
<li>Wed.-Fri of week of May 9</li>
</ul>
</li>
<li>CLAS analysis</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Beni">Beni</span></h2>
<ul style="list-style-type: square;">
<li>F125 flash, data scanning program
<ul style="list-style-type: square;">
<li>looked at last weekend's data</li>
<li>3 bad events found in CDC</li>
<li>looking at old data as well</li>
</ul>
</li>
<li>solenoid cold, 50% full</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Lubomir">Lubomir</span></h2>
<ul style="list-style-type: square;">
<li>fixed HV channel using a wooden stick
<ul style="list-style-type: square;">
<li>dark current was reduced, stable</li>
</ul>
</li>
<li>looking at cosmic data, so far so good</li>
<li>preparing TRD for run</li>
<li>preparing for Vienna Wire Chamber Conference (that is
not named that anymore)</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Mark_D.">Mark D.</span></h2>
<ul style="list-style-type: square;">
<li>looking at cosmics Beni took
<ul style="list-style-type: square;">
<li>looking for LED pulser triggers using TS marking in
events</li>
</ul>
</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Hovanes">Hovanes</span></h2>
<ul style="list-style-type: square;">
<li>updating solenoid EPICS variables, vacuum-related mostly
<ul style="list-style-type: square;">
<li>configuration is not maintainable</li>
<li>will go to scheme used by other PLC-based EPICS
variables after the run</li>
</ul>
</li>
<li>FADC scalers
<ul style="list-style-type: square;">
<li>with Paul and Sergey, avoiding crashes of the server
process</li>
</ul>
</li>
<li>working on beam scan improvements</li>
<li>FCAL HV alarms not responding when communication module
turned off
<ul style="list-style-type: square;">
<li>work with Elton and Adesh Subedi</li>
</ul>
</li>
<li>developing interlock for TAC
<ul style="list-style-type: square;">
<li>high-rate triggers retraction</li>
<li>check done that rate is being measured (HV on, etc.)
to fail safe</li>
</ul>
</li>
<li>installing GUIs for target, polarimeter in main display</li>
</ul>
</div>
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