[Halld-jlab] Hall D Staff Meeting Notes, December 19, 2011

[Mark M. Ito]

Hall D people,

Find the notes at 
https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_December_19,_2011 
and below.

   -- Mark
   _____

Private:Hall D Staff Meeting, December 19, 2011

    Present: Eugene Chudakov (chair), Hovanes Egiyan, Mark Ito, David
    Lawrence, John Leckey, Lubomir Pentchev, Yi Qiang, Elton Smith, Sascha
    Somov, Ivan Tolstukhin, Elliott Wolin, Glenn Young

Eugene, General Announcements

      * situation with project pretty good, Hall D is at 97% schedule-wise
      * costs are trending down, at 94% cost-wise
      * areas with over-spending: solenoid, FDC, infrastructure
      * An ETC will be submitted again
           + last year 2.7 M$
           + this year significant amount again
      * additional ring of BCAL likely, not decided yet
      * FADC-250 contract not yet awarded

Eugene for Tim, Engineering

      * cladding for solenoid out for bid
      * PR for pair spectrometer iron sent
      * forward calorimeter platform has been reviewed
      * LCW in Hall almost complete
      * tagger: 3 of 4 slabs of steel annealed
      * Giles Brown working on pair spectrometer power supply procurement
      * vacuum chamber tagger procurement out
      * trigger interface and signal distribution board procurement
        imminent
      * power will be out in the building until morning of Jan. 2

David

      * with Elliott working on online documents
      * simulation: working on random number seed issue

Hovanes

      * JLab discriminator support for EPICS done, document in DocDB
      * received one module of Struck scalers
      * FADC scalers for epics, postponed while firmware settles down
      * two network switches in EEL building 126, one works for sure
      * 3 CPU's ordered for Beni arrived
           + wrong front panel configuration, USB and VGA ports missing,
             Procurement in discussions with vendor
      * asked IT to configure a Windows terminal server for controls
           + needed for PLC control and configuration

Sascha

      * working with Ivan on SiPM timing tests
      * prototype of electronics configuration database written with Dmitry
        Romanov
      * working with Vardan Gyurjyan on initialization of trigger and
        electronics
           + working on document for this
      * some functions for scalars from Flash ADC received, not implemented
        yet
      * beam-line: SOW's for tagger vacuum chamber, pair spectrometer
        magnet iron[?] in preparation
      * Ken Livingston is interested in the goniometer, has written
        specification
      * Chuck came up with drawings for pair spectrometer detector
        prototype
           + all components in hand except for amplifier

Ivan

      * finished measurements with 3x3 mm SiPM's, both 50 and 25 micron
        versions
           + more detailed measurements than before
      * at high rate with 50 micron version, see degradation of time
        resolution after about 1 MHz
           + don't see it at small amplitude
      * amplitude depends on rate, at 100 kHz start to see change
           + next step to investigate this
      * timing resolution for array: no pre-amp yet, promised for beginning
        of January
      * want to repeat 1x1 mm SiPM measurements, 25 and 50 micron
      * in January will have laser

Mark

      * calibration database now installed on the ifarm
      * PR for TOF construction contract submitted
      * working on gathering information on TOF PMT purchase decision
      * collecting ideas for start counter SiPM arrangement
      * working on a new sim-recon release
      * Eugene comments:
           + need more manpower on tracking, calorimeter reconstruction
           + visitors an option
           + Sascha mentions Dmitry of RAL

Elton

      * specification for spare solenoid
           + out for signatures
      * last week, readiness review for Santa Maria, SiPM testing
           + everything working (the night before)
           + three test stations
               1. receiving area
               2. PDE measurements
               3. large dark box, test 32 units at a time
                     # relative pde, I-V curves
                     # sit on copper plate, liquid cooled
           + many comments and questions from folks at JLab
           + three reccomendations
               1. qualify test set-up
                     # use measurements of 30 SipM's tested at JLab as
                       verification
               2. production manager, can't start until Feb.
               3. make sure to update documentation
           + report basically completed
      * Santa Maria is building light guides
           + they have two machines
           + small machine takes a while
           + large machine not quite ready
           + for first article, use medium machine from architecture school
           + polishing: connections with telescope mirror polishing people,
             get some speed-up in the hand polishing

Lubomir

      * there were still three cells in second package
           + problem with 4th cell, hv, sparking from one wire
           + back in the package now, looks OK so far
           + some imperfections on wire itself
      * continuing with cathodes, almost all ready for 2nd package
      * on track: by end of Jan. 2nd package will be done
      * next: emphasis on test of first package
           + still have need for more pre-amp cards
                o Cody working on an automatic testing set-up
           + new ideas on how to ground pre-amps, original idea copper
             tubing for cooling, discussions on-going

Yi

      * LabView control for solenoid almost done
      * working on automated log entries and analysis
      * fast DAQ for solenoid: use new Ethernet USB server, then read out
        signal from counting house over the network

Elliott

      * online documents with Dave: 9 docs going
           + each one has "outside" reviewer
           + more coming
      * CODA 3 due mid-Jan.
      * new e-logs
           + manuals
           + procedures
           + [?]
      * racks and power strips arrived from computer center
      * met with network guys will install things in Hall after beneficial
        occupancy granted
      * controls
           + replacement for shunt decided on
           + quench detector: will handle 50% imbalance
           + Scot reports: almost done with cryo controls
           + PLC programming: Josh going to school
      * Eugene: beneficial occupancy inspection this Wednesday

John

      * went to Indiana last week
      * learned how to actively replace bases
           + some tweaks to scheme to facilitate this
           + can be replaced in a few minutes
      * one base died, under investigation
      * another died, not clear when, also being investigated
      * Italians installed another calorimeter on floor underneath tagger;
        coordination needed going forward
      * gain equalization underway now, method being developed
      * future: tie into Hall B DAQ for tagger information

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