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<div id="content"> Folks,<br>
<br>
Please find the notes below and at<br>
<br>
<a class="moz-txt-link-freetext" href="https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_January_12,_2015">https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_January_12,_2015</a><br>
<br>
-- Mark<br>
____________________________________________<br>
<br>
Private:Hall D Staff Meeting, January 12, 2015<br>
<div id="bodyContent">
<div id="siteSub">From GlueXWiki</div>
<br>
Present: Alex Barnes, Eugene Chudakov (chair), Mark Dalton,
Alexandre Deur, Hovanes Egiyan, Sergey Furletov, Mark Ito,
Paul Mattione, Lubomir Pentchev, Carlos Salgado, Elton
Smith, Sascha Somov, Simon Taylor, Tim Whitlatch, Beni
Zihlmann<br>
<span class="mw-headline" id="Eugene"></span><br>
<span class="mw-headline" id="Eugene">Eugene</span><br>
<ul>
<li> Today is Paul Mattione's 1st day. He will be working
on:
<ul>
<li> data processing
</li>
<li> EPICS and slow controls
</li>
<li> physics analysis
</li>
</ul>
</li>
<li> Justin Stevens will join the group starting in March.
He will work on:
<ul>
<li> physics analysis
</li>
<li> DIRC development
</li>
</ul>
</li>
<li> budget: this year tight, $6M short of full funding
</li>
<li> running schedule
<ul>
<li> mid-Feb. accelerator starts, 5-pass separator
commissioning
</li>
<li> beam to tagger dump as early as Mar.
</li>
<li> beginning of Apr. to beginning of May: physics,
about 5 weeks
</li>
<li> Fall run: for accelerator, no physics
</li>
<li> DOE briefing on Feb. 3 may give more information
</li>
</ul>
</li>
<li> software review coming up February 11
<ul>
<li> Mark:
<ul>
<li> Curtis, David L., and Mark have met.
</li>
<li> Focus will be on accomplishments from
commissioning run with emphasis on software
</li>
</ul>
</li>
</ul>
</li>
<li> Elton: CW beam means beam must go to tagger hall
<ul>
<li> Eugene: we need to be ready to take beam at
beginning of March
</li>
</ul>
</li>
<li> major goals for Spring:
<ul>
<li> diamond radiator
</li>
<li> commission LH<sub>2</sub> target
</li>
<li> go to 1300 A with solenoid
</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Alexandre">Alexandre</span><br>
<ul>
<li> meeting last Thu., goals and tasks outlined for
Spring run
</li>
<li> wiki page up for planning
</li>
<li> please give him feedback, identify missing items
</li>
<li> schedule being produced
</li>
<li> Eugene: we will need someone to take over Yi's work
on the solenoid
<ul>
<li> David Butler will take care of hardware, running
the PXI system
</li>
<li> need data analysis, control software person
</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Sascha">Sascha</span><br>
<ul>
<li> level 1 trigger meeting:
<ul>
<li> firmware updating on many boards
</li>
<li> Sergey working on signal distribution boards
</li>
<li> playback implemented
</li>
<li> thresholds modified for new version
</li>
<li> checking needed
</li>
<li> new tools used for checking new firmware and for
beam, can use for timing alignment of trigger
components
</li>
<li> level 1 monitoring tool needs to be user
friendly, Sergey P. will work on this
</li>
</ul>
</li>
<li> working on understanding trigger performance,
especially FCAL
</li>
<li> with Nathan will look at PS data, as well as tagger
hodoscope
</li>
</ul>
<br>
<span class="mw-headline" id="Sergey_F.">Sergey F.</span><br>
<ul>
<li> hardware not working so looking at data
<ul>
<li> FCAL data: checking what we write to disk
</li>
</ul>
</li>
<li> F125 in block mode: can we get to 20 kHz?
<ul>
<li> in fact 40 kHz will be the goal
</li>
<li> problem with busy in firmware
</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Alexandre_2">Alexandre</span><br>
<ul>
<li> met with Chris Keith on the target, will:
<ul>
<li> check alignment
</li>
<li> check that rate scales with luminosity
</li>
</ul>
</li>
<li> also looking at data for beamline
</li>
</ul>
<br>
<span class="mw-headline" id="Beni">Beni</span><br>
<ul>
<li> looking at CDC data: efficiency, rates, etc.
</li>
<li> taking over DIRC photon detector work from Yi
<ul>
<li> received microchannel device
</li>
<li> working with Rodrigo
</li>
<li> have seen signals
</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Tim">Tim</span><br>
<ul>
<li> shielding in tagger area
</li>
<li> bellows on tagger hall beam pipe
</li>
<li> insertable profiler
</li>
<li> polarimeter installation prep (turbo pump)
</li>
<li> hydrogen target installation and testing
</li>
<li> total absorption counter: checkout and survey
</li>
<li> survey plan: finish by end of Feb.
</li>
<li> temporary goniometer radiator to be designed
</li>
<li> Feb. 18: fire safety review for Hall
</li>
<li> solenoid:
<ul>
<li> getting bad signals back from refrigerator,
working with cryo group to track it down
</li>
<li> mass flow controllers going back: want open when
off
</li>
<li> liquid sensors being replaced
</li>
<li> Danfysik coming for power supply maintenance
</li>
</ul>
</li>
<li> chiller for FDC goes out for repair tomorrow
</li>
</ul>
<br>
<span class="mw-headline" id="Simon">Simon</span><br>
<ul>
<li> working on prep for another round of simulation, put
in tilt of start counter
</li>
<li> revisiting timing between detector components
</li>
<li> calibration of CDC time offsets
</li>
<li> obtaining CDC alignment parameters from cosmics
</li>
</ul>
<br>
<span class="mw-headline" id="Mark_I.">Mark I.</span><br>
<ul>
<li> DC3 preparations underway
</li>
<li> meetings held on software review prep, David, Curtis,
MMI
</li>
<li> new webserver being prepared by Marty Wise
</li>
<li> farm has been upgraded with 4000 cores
</li>
</ul>
<br>
<span class="mw-headline" id="Elton">Elton</span><br>
<ul>
<li> FCAL fire safety meeting
<ul>
<li> VESDA in darkroom
</li>
<li> Tom Carstens coordinating
</li>
</ul>
</li>
<li> BCAL
<ul>
<li> Mark D. looking at FCAL triggers and BCAL
triggers
<ul>
<li> BCAL-FCAL factor of 5 in triggers
</li>
<li> 100 k π<sup>0</sup>s in BCAL
</li>
<li> same for FCAL
</li>
</ul>
</li>
<li> Nick and Chris doing fixes, humidity(?) among
them
</li>
<li> will turn things back on this afternoon
</li>
</ul>
</li>
<li> Hot Check Out
<ul>
<li> all items downgraded to checked
</li>
<li> groups responsible for moving to ready
</li>
<li> probably will start in a month
</li>
</ul>
</li>
<li> will need review from management before running
</li>
<li> RF from ACC
<ul>
<li> Chris S. assembling boards, FPGA programming
needed
</li>
</ul>
</li>
<li> User Board of Directors meeting this week
</li>
<li> Thursday: Elton on panel for Hall B commissioning
review
</li>
</ul>
<br>
<span class="mw-headline" id="Mark_D.">Mark D.</span><br>
<ul>
<li> BCAL low-level calibration
<ul>
<li> attenuation length being measured for each cell:
4.5 to 5.5 m
</li>
<li> reflections from light guides giving better
results that for bench tests
</li>
</ul>
</li>
<li> with 1/3 to 1/2 of data set, have π<sup>0</sup> about
right
<ul>
<li> see non-linearity in photon energy response
</li>
<li> good mass from photons above 1 GeV
</li>
<li> working with Will McGinley's plug-in
</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Paul">Paul</span><br>
<ul>
<li> offline monitoring launched over the weekend
</li>
<li> TOF matching improvements implemented
</li>
<li> TOF hit distributions OK now
</li>
<li> still have mysterious double peak in energy spectrum
</li>
</ul>
<br>
<span class="mw-headline" id="Lubomir">Lubomir</span><br>
<ul>
<li> end of last week: shut off FDC chiller
<ul>
<li> will control power with PLC
</li>
</ul>
</li>
<li> analyzing FDC data, drift velocity different from
cosmic running, 15% faster
<ul>
<li> would require large gas mixture error 40/60 to
45/55
</li>
<li> could be the alcohol
</li>
</ul>
</li>
<li> data for alignment, no B-field, low energy tracks,
100-200 MeV pions
<ul>
<li> efficiency could be higher than for higher
momentum
</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Hovanes">Hovanes</span><br>
<ul>
<li> FCAL voltage control, problems in Fall
<ul>
<li> bases go to max. voltage spontaneously
</li>
<li> read-out speed a problem
</li>
</ul>
</li>
<li> gas system control modifications coming
<ul>
<li> need remote flow shut-off
</li>
</ul>
</li>
<li> magnet power supply (tagger and pair spect.) manually
did not get ramped to max. before going to set-point
always, will implement automatic procedure
</li>
<li> add LCW alarm
</li>
<li> add Hall climate alarms
</li>
<li> new motor applications: beam profiler, polarimeter
target
</li>
<li> tomorrow: control meeting on hydrogen target
<ul>
<li> current system in LabView w/ EPICS server
</li>
</ul>
</li>
<li> TAC needs checking and alignment
</li>
</ul>
<br>
<span class="mw-headline" id="Carlos">Carlos</span><br>
<ul>
<li> PWA meeting moved to Wed., 10 am
</li>
<li> trying to simulate different naturalities of exchange
particle with linear polarization
<ul>
<li> theorists have amplitudes
</li>
</ul>
</li>
<li> finishing documentation on gui-based PWA on JLab farm
<ul>
<li> webpage exists with documentation, code
</li>
</ul>
</li>
</ul>
<br>
<span class="mw-headline" id="Alex_B.">Alex B.</span><br>
<ul>
<li> tagger microscope fiber analysis
<ul>
<li> upstream good (200 pixels)
</li>
<li> downstream not so much
</li>
</ul>
</li>
<li> small board with voltage control: will make spares
</li>
<li> no fresh news on active collimator
</li>
</ul>
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href="https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_January_12,_2015">https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_January_12,_2015</a>"</div>
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<pre class="moz-signature" cols="72">--
Mark M. Ito, Jefferson Lab, <a class="moz-txt-link-abbreviated" href="mailto:marki@jlab.org">marki@jlab.org</a>, (757)269-5295
</pre>
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