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Folks,<br>
<br>
Please find the notes from today's meeting below and at
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_August_24,_2015">https://halldweb.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_August_24,_2015</a>
.<br>
<br>
-- Mark<br>
____________________________<br>
<br>
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<h1 id="firstHeading" class="firstHeading" style="font-weight:
bold;" lang="en"><span dir="auto">Private:Hall D Staff
Meeting, August 24, 2015</span></h1>
<div id="bodyContent" class="mw-body-content">
<div id="siteSub">From GlueXWiki</div>
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<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Present: Fernando Barbosa, Eugene
Chudakov (chair), Mark Dalton, Alexandre Deur, Sergey
Furletov, Mark Ito, David Lawrence, Paul Mattione, Lubomir
Pentchev, Elton Smith, Sascha Somov, Justin Stevens, Simon
Taylor, Tim Whitlatch</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/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#General_Issues.2C_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">General Issues, Eugene</span></a></li>
<li class="toclevel-1 tocsection-2"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Run_Preparations"
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">Run Preparations</span></a>
<ul style="list-style-type: square;">
<li class="toclevel-2 tocsection-3"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Engineering.2C_Tim"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.1</span><span
class="Apple-converted-space"> </span><span
class="toctext">Engineering, Tim</span></a></li>
<li class="toclevel-2 tocsection-4"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Electronics.2C_Fernando"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.2</span><span
class="Apple-converted-space"> </span><span
class="toctext">Electronics, Fernando</span></a></li>
<li class="toclevel-2 tocsection-5"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Beamline.2C_Alexandre"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.3</span><span
class="Apple-converted-space"> </span><span
class="toctext">Beamline, Alexandre</span></a></li>
<li class="toclevel-2 tocsection-6"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Detectors"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.4</span><span
class="Apple-converted-space"> </span><span
class="toctext">Detectors</span></a>
<ul style="list-style-type: square;">
<li class="toclevel-3 tocsection-7"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Drift_Chambers.2C_Lubomir"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.4.1</span><span
class="Apple-converted-space"> </span><span
class="toctext">Drift Chambers, Lubomir</span></a></li>
<li class="toclevel-3 tocsection-8"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Calorimeters.2C_Elton"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.4.2</span><span
class="Apple-converted-space"> </span><span
class="toctext">Calorimeters, Elton</span></a></li>
</ul>
</li>
<li class="toclevel-2 tocsection-9"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Online"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.5</span><span
class="Apple-converted-space"> </span><span
class="toctext">Online</span></a>
<ul style="list-style-type: square;">
<li class="toclevel-3 tocsection-10"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#DAQ.2C_Trigger.2C_Sascha"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.5.1</span><span
class="Apple-converted-space"> </span><span
class="toctext">DAQ, Trigger, Sascha</span></a></li>
<li class="toclevel-3 tocsection-11"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#More_DAQ.2C_Sergey"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.5.2</span><span
class="Apple-converted-space"> </span><span
class="toctext">More DAQ, Sergey</span></a></li>
<li class="toclevel-3 tocsection-12"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Slow_Controls.2C_Hovanes"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.5.3</span><span
class="Apple-converted-space"> </span><span
class="toctext">Slow Controls, Hovanes</span></a></li>
<li class="toclevel-3 tocsection-13"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Online.2C_David"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.5.4</span><span
class="Apple-converted-space"> </span><span
class="toctext">Online, David</span></a></li>
</ul>
</li>
<li class="toclevel-2 tocsection-14"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Data_Analysis.2C_Justin"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.6</span><span
class="Apple-converted-space"> </span><span
class="toctext">Data Analysis, Justin</span></a></li>
<li class="toclevel-2 tocsection-15"><a
href="https://halldweb.jlab.org/wiki/index.php?title=Private:Hall_D_Staff_Meeting,_August_24,_2015&printable=yes#Other_Topics"
style="color: rgb(85, 34, 0); padding: 0px
!important; text-decoration: underline;
background: transparent;"><span
class="tocnumber">2.7</span><span
class="Apple-converted-space"> </span><span
class="toctext">Other Topics</span></a></li>
</ul>
</li>
</ul>
</div>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="General_Issues.2C_Eugene">General
Issues, Eugene</span></h2>
<ul style="list-style-type: square;">
<li>HADRON conference coming in September
<ul style="list-style-type: square;">
<li>call for Hall D tour guides had good response, we
are covered</li>
<li>call for students to help with conference: no
responses</li>
</ul>
</li>
<li>tomorrow tour for visiting CIOs from other labs, David
will conduct it</li>
<li>last PRs for fiscal year done, a few left
<ul style="list-style-type: square;">
<li>computing</li>
<li>electronics, another VXS crate</li>
</ul>
</li>
</ul>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Run_Preparations">Run
Preparations</span></h2>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Engineering.2C_Tim">Engineering,
Tim</span></h3>
<ul style="list-style-type: square;">
<li>magnet cool down complete by end of week
<ul style="list-style-type: square;">
<li>at 80 K now</li>
<li>adding more voltage signals, acoustic monitors</li>
<li>Jonathan: testing will take two weeks, may be less</li>
<li>replacing level sensor</li>
</ul>
</li>
<li>FDC spare package ready to move back to Hall</li>
<li>survey and alignment
<ul style="list-style-type: square;">
<li>will do collimator cave next</li>
<li>tagger and Hall already done</li>
</ul>
</li>
<li>target will be back in by end of week</li>
<li>will re-do survey high-granularity PS counters
<ul style="list-style-type: square;">
<li>Sasha: before box installed, low-granularity too?</li>
</ul>
</li>
<li>beamline needs to go back together
<ul style="list-style-type: square;">
<li>will add two flashes for TPol</li>
</ul>
</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Electronics.2C_Fernando">Electronics,
Fernando</span></h3>
<ul style="list-style-type: square;">
<li>clock jitter measurements
<ul style="list-style-type: square;">
<li>will get help from Ben Raydo and his precise scope</li>
<li>modules installed, not cabled</li>
<li>see jitter of 100-150 ps</li>
</ul>
</li>
<li>updated firmware for this run: F250, Trigger
Supervisor, F1TDC, F125
<ul style="list-style-type: square;">
<li>Ed working on F1TDC problem</li>
<li>F125: one crate under test, Cody, Naomi, Beni look
at it</li>
</ul>
</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Beamline.2C_Alexandre">Beamline,
Alexandre</span></h3>
<ul style="list-style-type: square;">
<li>Hardware change for BPM not needed: Todd had not
turned off quad before tagger in his study</li>
<li>fast feedback: no news</li>
<li>want to have Rapid Access for Hall D
<ul style="list-style-type: square;">
<li>need to buy hardware (CARMs), expensive items</li>
<li>PSS state: Hall and Tagger Hall the same, might be
an issue</li>
<li>not for next run</li>
</ul>
</li>
<li>status of new microscope fibers unknown
<ul style="list-style-type: square;">
<li>Eugene: can microscope be used for coherent peak?</li>
<li>Hovanes: scalers showed stable rates recently</li>
</ul>
</li>
<li>coherent peak without Ken Livingston
<ul style="list-style-type: square;">
<li>Hovanes and Paul can handle it as long and
software works</li>
<li>Ken could work on software remotely in emergency</li>
</ul>
</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Detectors">Detectors</span></h3>
<h4 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Drift_Chambers.2C_Lubomir">Drift
Chambers, Lubomir</span></h4>
<ul style="list-style-type: square;">
<li>need to get mass flow controllers back from repair</li>
<li>chiller ready to switch out for repaired unit
<ul style="list-style-type: square;">
<li>tests completed on repaired unit</li>
</ul>
</li>
<li>mysterious offset in FDC, Fall data vs. Spring data
<ul style="list-style-type: square;">
<li>100 to 300 micron shift seen</li>
<li>could be beam energy, or trigger, or something
else</li>
</ul>
</li>
</ul>
<h4 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Calorimeters.2C_Elton">Calorimeters,
Elton</span></h4>
<ul style="list-style-type: square;">
<li>FCAL: John turned on, some trouble channels
<ul style="list-style-type: square;">
<li>want to look at shifts with LED magnet on vs. off</li>
</ul>
</li>
<li>BCAL: turned on, taking data
<ul style="list-style-type: square;">
<li>one LED broken</li>
<li>looking at calibration of layer 4 with muon decays
<ul style="list-style-type: square;">
<li>50 MeV endpoint</li>
<li>data posing some questions</li>
</ul>
</li>
<li>cooling working well
<ul style="list-style-type: square;">
<li>fixed sensor upstream</li>
</ul>
</li>
</ul>
</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Online">Online</span></h3>
<h4 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="DAQ.2C_Trigger.2C_Sascha">DAQ,
Trigger, Sascha</span></h4>
<ul style="list-style-type: square;">
<li>Eugene: want to run 200 nA, 10<sup>-4</sup><span
class="Apple-converted-space"> </span>radiator, 20 kHz
event rate, "low intensity" conditions. Can we?
<ul style="list-style-type: square;">
<li>F125: an open question</li>
<li>F250: 80 kHz OK</li>
</ul>
</li>
<li>plan to debug trigger with playback
<ul style="list-style-type: square;">
<li>hardware performance not understood</li>
</ul>
</li>
<li>Eugene: what trigger was responsible for trigger
signals
<ul style="list-style-type: square;">
<li>Justin: FCAL-BCAL with energy balance</li>
</ul>
</li>
<li>need to add debugging features</li>
<li>David: TDC readout of trigger done?
<ul style="list-style-type: square;">
<li>Fernando will check</li>
</ul>
</li>
<li>David: change to firmware for TS from William Gu
needed</li>
<li>Eugene: can we have a pulser trigger?
<ul style="list-style-type: square;">
<li>will think about it</li>
</ul>
</li>
</ul>
<h4 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="More_DAQ.2C_Sergey">More DAQ,
Sergey</span></h4>
<ul style="list-style-type: square;">
<li>if F1TDC, F125 OK, can go to 20 or 30 kHz
<ul style="list-style-type: square;">
<li>means 500 MB/s extrapolating from last time</li>
<li>that may introduce dead-time</li>
<li>David: dropping headers could reduce data to 40%
of former size
<ul style="list-style-type: square;">
<li>Bryan Moffit has a secondary read-out list to
do this</li>
</ul>
</li>
</ul>
</li>
<li>David: would like to test event tagging</li>
</ul>
<h4 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Slow_Controls.2C_Hovanes">Slow
Controls, Hovanes</span></h4>
<ul style="list-style-type: square;">
<li>beam profiler: will sample faster
<ul style="list-style-type: square;">
<li>Nerses developed driver, application work next</li>
<li>need fitting procedure</li>
</ul>
</li>
<li>Paul working on scalar read-out
<ul style="list-style-type: square;">
<li>ST, hodoscope, microscope done</li>
<li>GUI left to do</li>
</ul>
</li>
<li>FCAL voltage control
<ul style="list-style-type: square;">
<li>firmware upgraded</li>
<li>may reduce noise, false readings from basses</li>
</ul>
</li>
<li>FCAL LED pulser application changed completely
<ul style="list-style-type: square;">
<li>Sascha: PS hodoscope needs pulser, can it
piggyback on calorimeter system?
<ul style="list-style-type: square;">
<li>should get a separate 1495 instead</li>
</ul>
</li>
</ul>
</li>
<li>CAEN HV for FDC, CDC
<ul style="list-style-type: square;">
<li>sudden disconnect of voltage board with no alarm
fixed</li>
<li>now get EPICS-induced shutdown with the new driver
occasionally</li>
</ul>
</li>
</ul>
<h4 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Online.2C_David">Online, David</span></h4>
<ul style="list-style-type: square;">
<li>add to read-out list: UNIX timestamp, TS info</li>
<li>Sascha: synch events coming</li>
<li>RedHat 7 upgrade
<ul style="list-style-type: square;">
<li>EMU, farm, raid, console machines</li>
<li>leave controls systems alone</li>
</ul>
</li>
<li>cyber security: CC wants to scan more machines
<ul style="list-style-type: square;">
<li>possible plan: scan everything at certain times</li>
<li>Eugene: during run, no scans</li>
</ul>
</li>
<li>emulation code for Flash ADCs
<ul style="list-style-type: square;">
<li>calling a meeting</li>
</ul>
</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Data_Analysis.2C_Justin">Data
Analysis, Justin</span></h3>
<ul style="list-style-type: square;">
<li>at Physics meeting, assignments of people to channels
done
<ul style="list-style-type: square;">
<li>a lot of interest shown</li>
<li>benchmarks for amount of data needed to be
developed</li>
</ul>
</li>
<li>Simon: reconstruction in pretty good shape</li>
<li>BCAL timing still missing</li>
<li>Paul: need quick turn-around for calibrations</li>
<li>Simon: need to solve "wire sagging" problem in CDC
<ul style="list-style-type: square;">
<li>has idea for way forward</li>
<li>working with Mike Staib</li>
<li>need to characterize as function of z</li>
<li>fear: different correction for each straw</li>
</ul>
</li>
<li>Sergey: sees fragmentation of FCAL showers
<ul style="list-style-type: square;">
<li>Elton: Will McGinley introducing single-ended hits</li>
<li>Simon: timing consistency recently added as
requirement</li>
</ul>
</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Other_Topics">Other Topics</span></h3>
<ul style="list-style-type: square;">
<li>Eugene: need to plan special running, e. g., special
purpose calibration running</li>
<li>Sasha: can we add nuclear target
<ul style="list-style-type: square;">
<li>mentioned in response to LOI</li>
</ul>
</li>
<li>Eugene: need to assign new run coordinator
<ul style="list-style-type: square;">
<li>volunteers solicited</li>
</ul>
</li>
</ul>
</div>
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