[Halld-jlab] Hall D Staff Meeting Notes, December 11, 2017

[Mark Ito]

Folks,

Please find the notes below and at

https://halldweb.jlab.org/wiki-private/index.php/Hall_D_Staff_Meeting,_December_11,_2017 
.

   - Mark

______________________________________


  Hall D Staff Meeting, December 11, 2017

Present: Alex Austregesilo, Thomas Britton, Eugene Chudakov (chair), 
Mark Dalton, Alexandre Deur, Hovanes Egiyan, Sergey Furletov, Mark Ito, 
Paul Mattione, Lubomir Pentchev, Elton Smith, Sascha Somov, Simon 
Taylor, Tim Whitlatch, Beni Zihlmann


    Announcements, Eugene

  * Appraisals: Physics Division calibration has been done
  * Work Space: SRF needs more, other groups likely will be squeezed
  * Budget: on capital funds, Rolf approved finishing the DIRC
      o PMTs will all be bought this fiscal year
  * FCAL upgrade
      o Physics will contribute, but more than that will be needed
      o Crystals (@ $900) only about half the cost, the rest electronics
  * travel abroad for more than 30 days will require training
  * foreign nationals visiting the lab to work must be under auspices of
    an MOU or CRADA
      o meetings do not count
  * Main Hall D page has been updated to match style of new Lab website
    design. Please fix or report any links that are broken
  * Beni: in the event of a government shut-down, all labs will close
    after three weeks
  * Solenoid will stay on as long as there is a chance of running this
    month.


    Data Analysis

  * Alex A.: 2017 high intensity reconstruction pass almost done. Should
    be over by Wed.
      o 5 runs were processed earlier for low vs. high intensity
        comparison. FCAL is not a problem anymore. Differences in
        reconstruction efficiency now down to 5% level
      o People looking at MC samples to see what differences to expect
      o ρ efficiency almost flat with energy, same for high and low
        intensity periods
  * Simon: new matching scheme almost ready for general release
  * Elton: problem with change in BCAL efficiency due to material maps
    fixed.
  * Lubomir: better understanding of Bethe-Heitler generators now
      o efficiency agrees with MC
      o 2016 vs 2017 differences remain
      o must cut 1/2 of statistics to reduce pion background
      o hope to have J/ψ cross sections in few weeks
  * Alex A.: flux calculation changes from version 1 to version 2 of
    reconstruction

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

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