[Halld-jlab] Hall D Staff Meeting Notes, September 10, 2012
Mark M. Ito
marki at jlab.org
Thu Sep 13 09:22:58 EDT 2012
Find the notes below and at
https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_September_10,_2012
.
_______
Private:Hall D Staff Meeting, September 10, 2012
Present: Daniel Bennett, Vladimir Berdnikov, Eugene Chudakov (chair),
Hovanes Egiyan, Manuel Lara, David Lawrence, Lubomir Pentchev, Yi
Qiang, Dmitry Romanov, Patrizia Rossi, Elton Smith, Sascha Somov, Simon
Taylor, Ivan Tolstukhin, Tim Whitlatch, Glenn Young, Beni Zihlmann
Announcements, Eugene
* Lehman review was held, top management only involved, discussed
changes to the project baseline
+ no official shift of Hall D schedule yet, April of '14 still
the start date
* management pushing us to finish the solenoid early
+ want to start cool down in November
+ will have to work two shifts, techs will be taken from other
projects, FDC and BCAL in particular
* Hall D position has been advertised
+ some applications have come in
* status of construction: reviewed the Hall-D-specific project
progress charts
Software
David
* working on BCAL simulation
+ started writing note
* working on low level data objects
+ objects made for flash 250 and f1 tdc
* code analyzer: discovers functional errors in code
* added status word in jana, present in new release
Mark
* data challenge
+ 1000 reconstruction jobs run
* EVE event display research
* bash set-up script written
* scientific survey results distributed to UGBoD and AD's
* JLab PWA group
+ helping Carlos Salgado with organization
+ obtained account on qcdgpu.jlab.org, provides access to GPU's
Simon
* multi-track event improvements
* straight line track reconstruction progressing
* odds and sods from Beni were worked on
* during past week, places identified where speed can be improved
Engineering, Tim
* push to get solenoid cold by end of Nov.
+ manpower being shuffled to do this
* platform for cryo partially installed
+ basic structure in place by end of week
+ cryo can by end of month, distribution box can then be
installed
* tagger magnet still on schedule for delivery in Nov.
+ power supply set to be shipped to vendor to test
* pair spectometer, start counter, time-of-flight designs all coming
along
+ pair spectrometer stands nearly done
* design for FCAL dark box: Indiana working on that, requirements
transmitted to them
Solenoid Controls
Elliott
* solenoid controls in good shape, Josh Ballard is ahead of schedule
* Scot Spiegel has wired the racks to the extent possible now
+ goal: rack into Hall at end of month
* vacuum system: parts ordered, pumps coming
* valve positioners in good shape
* quench detector: got feedback from Danfysik
* e-log: Theo Larrieu promises something in time
* OSP's: power supply OSP signed
* cryo pipe from hut to hall: cryo group is responsible
Yi
* PXI programming, used for fast DAQ, progressing well
* 250 kHz sampling rate achieved on all 32 channels
* average values broadcast at 100 Hz to EPICS
* local copy at higher rate on local hard drive at 10 kHz
* PLC rate not decided yet
FDC Construction
Lubomir
* trying to use techs now before they disappear
* cathodes for 1st three cells for package one, focus, start next
week
* delay: decision on corrosion problem amelioration
+ corrosion happens over time,
+ EPDM worst, especially with humidity
+ even Viton corrodes under extreme conditions
+ tried to glue Kapton film at o-ring location, use Hysol with
epoxy, no go
+ tried to just coat with epoxy, epoxy spreads too much
+ use vacuum grease to anchor vacuum grease
+ made a chamber for testing methods
+ concern about oxygen content of chamber gas
+ accelerate corrosion to test lifetime of solution
* also need wire frames for the fourth package
* after 1st package, switch to fourth package
* December: 2nd package
Beni
* package 3 is in test stand
+ HV went to nominal except for one sector
+ analog signals on cathodes look good
+ oxygen sensor at Blue Crab, efficiency measured, look
reasonable
* problem with strip read-out, flash 125, data acquisition hangs
* similar problem with Motorola CPU's, but Linux does not recover
+ can now read out ADC without crashing, but may be losing
synchronization
+ as long as one ADC used that is OK
+ ADC firmware does not allow more than one board per crate
+ Cody is working on the problem
* HV system, last week, weird behavior, CAEN 1550, tripped, some
channels, jumped to 2500 volts, cannot ramp to 100 V
Calorimeters, Elton
* Fernando Barbosa, Nick Sandoval, and Chris Cuevas put together
first two production read-out modules
+ nicer design, easier to assemble
+ u-boards, several of them, had a trace that caused a short.
+ 4000 of them in total
+ check-out finished today
+ brought over to ESB
+ bringing the DAQ up there now
* first two sets of light guides arrived from Santa Maria
+ visually look nice
* plan for gluing? (Eugene)
+ light guides need to be checked
+ modifications to jig for gluing in the works
+ then can start dry runs
+ do not have led board yet
o should be here in mid-September
o last meeting report: by the end of this week, will be
shipped
o need led boards before gluing starts
Trigger, Sascha
* two-crate trigger test set-up in F117
* second crate started smoking
+ Ed Jastrzembski and Dave Abbott took a look
+ could be a problem with controller
o will send CPU back to manufacturer
* one crate is functioning
* replaced the crate
* working on board initialization procedure/database with Dmitry
Electronics, Eugene
* all big procurements have been submitted
* flash 125 has been awarded
* F1 TDC's not awarded yet
* CTP not awarded yet
* flash 250 supposed to arrive this month at UMass
Beamline, Sascha
* got all quotes and ordered all components for pair spectrometer:
fiber, glue, SiPM's
* Ivan can work on assembly when parts come in
* contract with CUA: waiting for feedback from Franz
* specs sent to Hamamatsu for tubes for fixed array
* scintillator not ordered yet
* Richard has received fibers, we need a receipt from him
+ Procurement tells us he is busy with first week of classes
* fixed array: size of scintillator not fixed yet
Online
Hovanes
* null progress reports:
+ counting house racks installed, still need parts to install
power from top
+ MOU with Yerevan, no progress, came back from DOE with
comments, in 12 GeV office
* EPICS support needed for CAEN 1495, two modules bought for control
system
* other boards that need epics support in DAQ
+ will use asyn driver
+ using epics support for Struck scalers, bug in code that
overwrites flash memory in vxworks
* Ben Raydo gave a tutorial on how to program FPGA's: very steep
learning curve
* electronics installation in hall and counting room: what is overall
schedule? (Eugene)
+ first need network in the counting house, Bryan Hess is busy
and cannot work on it, Jason working on flood recovery
+ by end of october should have fibers
+ to connect Hall to counting house need fiber bundles
(connected to patch panel in Hall) and cable from patch panel
to crates
+ need cable trays in hall
Elliott
* raw data tape code from David Abbott this week
* Manuel will work on Java event display
* how to derive translation table from inventory data base?
Gas System, Beni
* there will be cost savings from manifolds
* organic gas plan? (Eugune): no plan at present, could be added at
any time
SiPM NIM paper, Yi
* received comments from referee, paper updated, new draft being
circulated
Retrieved from
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--
Mark M. Ito
Jefferson Lab (www.jlab.org)
(757)269-5295
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