[Halld-jlab] Hall D Staff Meeting Notes, Sepember 26, 2011
Mark M. Ito
marki at jlab.org
Mon Sep 26 18:00:59 EDT 2011
Folks,
Find the notes at
http://www.jlab.org/Hall-D/software/wiki/index.php/Private:Hall_D_Staff_Meeting%2C_September_26%2C_2011
and below.
-- Mark
_____
Private:Hall D Staff Meeting, September 26, 2011
Present: Vladimir Berdnikov, Eugene Chudakov (chair), Cody Dickover,
Hovanes Egiyan, Mark Ito, David Lawrence, Bert Manzlak, Lubomir
Pentchev, Yi Qiang, Dmitry Romanov, Elton Smith, Sascha Somov, Simon
Taylor, Ivan Tolstukhin, Tim Whitlatch, Elliott Wolin, Glenn Young,
Beni Zihlmann
Announcements: Eugene
* Lab is getting ready for Lehman review
+ dry runs start this week
* preparing for collaboration meeting as well
* budget unclear, scenarios 36 M$ to 66 M$
* job search
+ short list, still a bit too long
+ letters and apps still coming in
Engineering: Tim
* 2 yokes up on pedestals in Hall
+ alignment starts today
+ there was minor fiducialization glitch
* upstream platform
+ last week of Oct. or first week of Nov. ready to install
* mock up
+ last parts in
+ tomorrow work should progress
+ in the ESB
* BCAL
+ also in ESB
+ parts almost all there, one part missing
+ Wed. afternoon or Thu. ready to start putting in wedges
* Eugene: will hire electrical engineer for power-related work
+ agreement w/ physics, work in D until 2018, then Hall A
+ offer has been made
* Eugene: they have built roof for tunnel from accelerator to tagger
hall
* target design review Thursday
Electronics: Cody
* FADC 125
+ conference call with Gerard Visser tomorrow
+ will replace 6 FPGA's
o Spartan-3 switched to Spartan-6
o pin-out's same, but less clearance between pins
o Cody been working on some layout issues along with Gerard
+ Fernando Barbosa: enough of a change to do a pre-order
o delays procurement
+ a week or two of work, assuming Gerard has some time
* differential to single-ended ECL board almost ready for ???
* Eugene: testing of FADC 250
+ Hall D and B got one each
+ Sergey Boyarinov:
+ one channel does not work, but otherwise he is satisfied
+ Sascha: will use for SiPM test set-up
Software: Mark
* submitted farm use projection to Graham Heyes
+ for FY12
+ two shots at analyzing one week's worth of data
* getting reports from three new sub-working-groups at meetings now
+ Paul Mattione working on PID scheme
* David: wiki, PHP upgrade on halldweb1.jlab.org progressing
* nightly builds, semi-weekly analysis jobs running now
+ Beni has added some improvements
David
* continuing studies of BCAL segmentation
Elton
* light guide procurement: preparation for award complete
* Athens procurement: materials in but not processed
* working on documentation of timing measurements that Ivan, Vitale
Baturin, and Elton have done
+ resolution about 50% worse than PMT resolution
+ at 1 MHz resolution breaks down
+ resolution with compact design tested, not a significant
difference
* Eugene: status of test set-up?
+
o Ivan: for timing measurements, completely finished
o 4 pre-amps, 2 lo, 2 hi, need pulse generator and power
supply
o Elton: backlog for CAEN TDC
* Cooling: placing orders for mechanical
* tests for production SiPM's
+ all optical components in hand, Carl
+ mechanical components should have been ordered last week
+ electrical board should be done this week
+ Chris Stanislav is working on these boards
+ all put together end of Oct.
+ may need to sign off on first order of SiPM's without nominal
testing
o some samples being looked at
* FCAL: Cockroft-Walton tubes ordered
+ all worked
+ Paul Smith did not like look of solder surface, getting
another set of sample boards
Safety: Bert
* Next time that there is an earthquake, stay inside until shaking
stops, then get out of the building.
* Fe55 still being held by Radcon group
+ $1200 Fe55 source, came at 28 micro C instead of 25
* work safety plan for Gibson for upstream platform, needs review
Tracking: Beni
* test stand ready to be cabled up again
+ will be able to read-out all six planes of wires
* CDC: last straw is in
+ tipped to horizontal for putting on outer shell
+ next: install wires
+ Eugene: need to connect wires internally after stringing.
Beni: more difficult than stringing
FDC: Lubomir
* three cells at end of last week
* Vladimir tested all
+ one wire channel not working
+ opened up chamber, not a broken wire, one trace on PCB missing
a section
* problem: gas leakage, introduced with three packages
+ various tests tried, found today: small bubble when wire frame
built
+ in epoxy on periphery between PCB and G10
+ created gas permeable channel
+ today, put in some more epoxy and re-check gas leakage
+ tomorrow re-assemble, go for four cells
* fifth one is almost ready
* Eugene: electronic testing? Beni: intention to test all 6 cells
* current between field and sense wires
+ place found where copper sulfate deposited, used for wire
deadening
+ reacts with something to make current path, cleaning did not
work
+ probably need to cut epoxy and replace wires
+ on frame that will not be used
* Source, Fe55 from Radcon will be released today
Simon
* new tracking document has been put into the DocDB
+ covered in overview talk at offline meeting
* issues/answers
+ regions with bad chi-squared
+ some improvement in track finding in forward direction
o candidate with wrong charge correlated with bad fits
Yi
* finished with draft of NIM paper for SiPM radiation test
* working on Labview DAQ for production tests on SiPM
+ try to finish by this week
Online: Elliott
* networking: short-term and long-term plan in place
+ Facilities favors fiber on poles
* catching up on software
+ Wed. online meeting: Vardan farm manager
+ simulated raw data from Dave Abbott
+ Bryan Moffit: automated read-out list
+ no progress on dis-entangler
+ conditions part of CCDB
+ configurations plan
* Nerses Gevorgyan is coming, Oct. 3
* quench detector
+ will existing one work?
+ could make a better one (discussion with Cody)
+ may have to wait for Floyd to give inductances of coils
+ solenoid controls re-design team is meeting
+ new strategy for RS-232: buy PLC modules or put Ethernet
devices at serial device
Hovanes
* working on crate for LV
+ MPOD from Wiener
+ controller and two cards: drift chamber LV and SiPM bias
voltages
+ has a driver, epics driver, made an epics application
+ screens exist, details to be worked out
* Nerses can work on how are alarms generated
Sasha
* FADC 250
+ working on bit-wise simulation, load to FPGA
+ simulation almost done, noise to BCAL added, baseline
fluctuations added
+ thinking about sending signals instead of summing
+ discussion of initialization of board
o Dmitry provided template
o discuss run control interface with Vardan Gyurjyan, also
the level 1 supervisor
+ got flash back on Fri., this week start playing with it
+ new DAC 117, new Linux controller to be used
* simulation of pair spectrometer revisited
+ vacuum chamber not cheap, it needs to be long
+ will have 1 meter of path in air
+ multiple scattering on window looks small
+ meeting with George Biallas and Tim for scheme for supporting
magnet
+ will get PCB design from Fernando for pair spectrometer SiPM's
* looking at simulation of eta rare decays
+ looking at missing mass and resolutions
+ Liping Gan flying to China next week
Dmitry
* with Sascha, working on online database to set initial conditions
* Calibration and Conditions Database (CCDB)
+ tested with JANA
+ constants moved to database from files
+ Mark testing with nightly builds
+ Hall B guys using code base
* unit tests for integrity checking
* went from custom code to a thrid-party unit test framework
* big file problem
+ too big for database
+ resource management scheme planned
Ivan
* meeting on pair spectrometer design
+ fiber glued to side of scintillator
+ SiPM read-out
+ Tim had good comments
+ present: Tim, George, Ivan, Sascha
+ Eugene: how to test? Sascha: Hall B will never notice
poster for Hall D
Eugene showed us the preliminary version from Public Affairs.
Retrieved from
http://www.jlab.org/Hall-D/software/wiki/index.php/Private:Hall_D_Staff_Meeting%2C_September_26%2C_2011
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