[Halld-jlab] Hall D Staff Meeting Notes, August 26, 2013

[Mark M. Ito]

Folks,

Find the notes below and at 
https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_August_26,_2013 
.

   -- Mark
____________________________________

Private:Hall D Staff Meeting, August 26, 2013

    Present: Vladimir Berdnikov, Mark Dalton, Hovanes Egiyan, Nerses
    Gevorgyan, Mark Ito, Vanik Kakoyan, Lubomir Pentchev, Sergey
    Pozdniakov, Patrizia Rossi, Elton Smith (chair), Sascha Somov, Simon
    Taylor, Ivan Tolstukhin, Alan Toro, Tim Whitlatch, Beni Zihlmann

Elton

      * vacuum leak in solenoid coils fixed
      * nitrogen leak near chimney being tracked down
      * all BCAL modules stacked
           + will be surveyed on Fri.
           + went together well, 1 or 2 mm out-of-round
      * Alan Toro joins us from Santa Maria, will be working on several
        electronics-related tasks, will be here until mid-Jan.

Tim

      * replacing pop-off plates on the vacuum chambers[?]
      * nitrogen leak look like in an unreachable place, small leak, will
        not take magnet apart to fix

Lubomir

      * FDC in EEL 126 now
           + being flushed with gas
           + HV test soon
           + made the move from Blue Crab with no known issues
      * working on spare package
           + has wider cells for PID studies
           + grounding worked over, was not done at Blue Crab
           + must read-out a 20 microsecond window, caused problem with
             CODA
      * disposition of the clean room at Blue Crab not clear, may be sold

Nerses

      * finished device support for monitoring detectors
           + can create histograms of voltages currents
      * implemented graphics for CDC control

Mark I.

      * start counter
           + re-test of latest batch of scintillator shows no degradation
             after two months, in contrast to previous batch
           + detector PCBs being populated by Nick
      * TOF
           + construction continues at a good pace
           + CAEN TDC broke, we are looking into loaning one to FSU to keep
             them going while theirs is repaired

Sascha

      * Fixed array
           + 5 PMT assemblies done by Chris, with electronics, no
             after-pulses, they look good
           + waiting on connectors
           + Chris can go at 5 counters per day, there are 250 counters
             total
           + scintillators and light guides from Eljen are here
           + gluing done by Eljen
           + Natalie will be working on testing
           + Bill done with mounting and gluing fixtures
      * pair spectrometer fine-grained array
           + Anatoly is done gluing fibers to scintillators
           + fixture for mounting will be here this week
      * diamond contract PR for UConn signed, an amendment to current
        contract

Simon

      * working on hit selection algorithm
      * improving FDC geometry specification
      * expecting to get code from Paul Mattione for dealing with curling
        tracks in the CDC

Mark D.

      * has a NIM crate for pulsing FADCs, in preparation for read-out as a
        DAQ exercise

Vanik

      * wrote GUI for CDC
           + convenient, can change parameters, control individual channels
           + both HV and LV

Sergey

      * inventory database ready to do the merge of two databases into one
      * ready to use, though some improvements could be contemplated

Hovanes

      * Yi got goniometer into FEL building
           + Vanik wrote scanning software
           + can run scans, can connect to the control system
           + some inconsistencies seen, need to fix hardware, laser system
             in particular
      * counting house
           + all consoles finished, computers installed in office area
           + monitors[?] for SWIS to come
           + no videoconferencing capability yet
           + event builder, EMUs, L3 farm node: order not visible in system
             yet, should have been ordered a month ago, joint order with
             SciComp farm nodes

Beni

      * FDC read-out with 20 microsecond window
           + problem with resulting big events CODA hangs
           + Elliott has been helping
           + EVIO bug, fix being implemented
      * studying how to deploy logic for timing-edge finding between two
        FPGA stages in Flash-125

    Retrieved from
"https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_August_26,_2013"

-- 
Mark M. Ito, Jefferson Lab, (757)269-5295, marki at jlab.org