[Halld-jlab] Hall D Staff Meeting Notes, May 24, 2010

[Mark M. Ito]

Find the notes posted at 
http://www.jlab.org/Hall-D/software/wiki/index.php/Private:Hall_D_Staff_Meeting%2C_May_24%2C_2010 
and as text below.

   ================

Hall D Staff Meeting, May 24, 2010

    Present: Mark Ito, David Lawrence, Lubomir Pentchev, Yi Qiang, Elton
    Smith (chair), Sascha Somov, Simon Taylor, Tim Whitlatch, Elliott Wolin


Elton

      * solenoid, work continues on
      * feed back from Lehman review
      * received more indirect information from DOE
      * Mont is supposed to report on this by mid-July
      * need a plan for how to address the issue
      * internal review committee Bill Schneider, Paul Brindza, Steve St.
        Laurent[?] reconvened recently
      * will have weekly meetings on this issue
      * by end of June need a plan, what type of design, how it affects
        schedule, a look at outside firms, Jim Fochtman will be dedicated
        to this
      * need a list of requirements for the magnet
           + field magnitude
           + uniformity
           + fringe
      * Simon and David will look into uniformity
      * time evolution of thermal short in the magnet, temperature rises by
        4 degrees


Elliott

      * got student from Yelena Prok to work on rootspy
      * the student on event display doing well
      * mantis issue tracking software issue: security, offsite access
      * limitations to evio found, random access i/o, get rid of event
        blocking
      * coil test manpower: Wesley, controls; Cody, safety interlock system
           + Wesley putting cryo group epics variables into plc
      * fast dumps vs. slow dumps discussion
           + PLC controls slow, not fast
      * need carbon glass calibrations
      * safety meetings starting Tuesday


Yi

      * continue with solenoid test work, learning P&I diagrams, will talk
        to Josh about details, will talk to Mark Wissmann to start on HMI
        programming
      * continuing test of SiPM radiation damage, recovery time 7 to 10
        days
      * will do another 1 mm x 1 mm test; Carl not ready yet, Hall A
        running for next 4 weeks
      * dose normalization still being studied


Lubomir

      * analyzing data from prototype,
      * comparing flash 125 with integrating adc
      * wire position resolution < 400 microns, implies cathode effective
        resolution < 100 microns
      * subtract noise (coming from CAEN HV supplies) by looking at non-hit
        channels
      * signals from different cards sometimes come at different times, by
        8 ns
      * plan to build another prototype layer with new mechanical design;
        schedule is tight


Beni

      * working on cosmic ray test
           + got correlations for cathode
           + efficiency very low when four strips per plane are required
      * CDC straws look streaky, working on an action plan
           + Tim: email from vendor, aluminum rollers will not be used in
             future, will re-look at packaging for shipment
      * gas system put on hold purchasing-wise, budget used up for this
        year
      * some time spent on system for storing information in database for
        manufacturing and connections
           + looked at IRMIS for this as well


Tim

      * coil 1 in middle of cold shock
      * coil 2 getting opened up
      * tagger magnet preliminary specs and drawings are out, went to about
        ten vendors, supposed to get info back from them by June 11
      * will have internal review [on the solenoid? on something else?],
        people from lab
      * cryo from CHL-to-Hall work, will be reviewed later, Jim F.
        sidetracked on new coil design
      * CDC tooling to do inner skin getting made
           + g10, 1/2 mm
      * two new techs started
      * FDC work coordinator, one application, a civil construction
        management background
      * Tech 3 position also out, may snag one as FDC work coordinator
      * another engineer to be hired in June
      * Bill Crahen working on final drawings for FDC, all changes made,
        updating procedure, need a traveller
      * Slava Ramyslovich working on CDC gas plenum detail drawings
      * magnet installation in Hall issues: filler plates, baffles, design
        almost done, drawings started


Mark

      * makefile work:
           + dropping hardwired path in libraries/HDDM
           + using HALLD_MY for include files for Utilities/hddm
      * reviewed NIM article for flash ADC timing studies
      * MOU review work, FSU, UMass
      * wrote some documentation on setting up environment
      * checked change request for Offline Computing


Sascha

      * finishing write-up of calibration of tagger microstrip detectors
      * thinking how to proceed with Yerevan involvement
      * we are borrowing pair spectrometer magnet from BNL, one or two
        magnet candidates in mind for use with microstrips, but big magnet
        needed for scintillator hodoscope
      * Liping interested in getting magnet
      * trigger test stand situation: discussing with Hai Dong how to
        proceed with playback mode
           + Hai is implementing new feature, different samples to
             different channels
           + next plan is to use a two crate system, problem is that there
             are not enough boards and crates, crate was stolen
      * Chris Cuevas organizing a trigger workshop in July, Serguey
        Boiarinov will participate


David

      * James finished work on rootspy, new student will take over
      * time spent on tracking, limited by rate
           + re-write, new swimmer, only goes 30% faster
      * CLAS12 software workshop tomorrow
      * GlueX software workshop, discussion on Wednesday
      * will start work on specification for calibration database system


Simon

      * has developed custom matrix classes
           + put into Kalman filter, speed up by 2 to 2.5, almost to factor
             of 3
           + checked in
      * three vector version also written, not yet checked in, some
        alt1-generated questions