[Halld-jlab] Hall D Staff Meeting Notes, December 15, 2014

[Mark M. Ito]

Folks,

Find the notes below and at

https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_December_15,_2014

   -- Mark
_______________________________________________________

Private:Hall D Staff Meeting, December 15, 2014

Present: Eugene Chudakov (chair), Mark Dalton, Alexandre Deur, Sergey 
Furletov, Mark Ito, David Lawrence, Lubomir Pentchev, Yi Qiang, Sergey 
Pozdniakov, Sascha Somov, Simon Taylor, Tim Whitlatch

Eugene

  * If you want access to any of the buildings at the Lab during the
    shutdown, please contact Eugene and have him put your name on the list.
  * Congress has approved a budget, president's budget plus 1 M$
      o the Fall run will be for accelerator
      o before 12 GeV, must install cooling in tunnel, dogleg upgrades
      o Spring run for us will be two months or less


David

  * event size for mode-8 4 to 4.5 times greater than for mode-7, mode-7
    4 times greater than original estimate
  * EPICS to ET not working
  * want to put F1 TDC configuration parameters in data stream


Sergey F.

  * looking for bottleneck in read-out rate
  * within crate, mode-7 or 8, no difference in rate
  * live-time low, 70% live
  * multi-block not tried
  * event size: calorimeter noise, FDC big contributors


Alexandre

  * need to buy radiation monitors before the next run


Sergey P.

  * assembling new trigger test set-up
  * 1 crate so far
  * will re-activate F117 set-up


Sascha

  * playing with different trigger types
  * calorimeter in coincidence with start counter
  * with coincidence FCAL rate down by 10
  * able to lower threshold on FCAL from 1500 to 1200
  * tuning delays on GTP
  * trigger identity recorded by TS
  * took some data with ST, TOF, FCAL coincidence with different TOF
    requirements
  * took ST and TOF trigger for calibrating minimum ionizing peak
  * last Sat., hodoscope gains adjusted with pair spectrometer trigger
  * TDC hits seen in pair spectrometer, hodoscope, and microscope
  * PS trigger can be added now


Tim

  * tomorrow shielding changes, VESDA work
  * Jan. Feb. work list being worked up, basic list in place
  * helium will stay in magnet
  * beamline drawings are out
  * FDC chiller: want to ship our for repair


Mark I.

  * starting to generate simulated data for data challenge 3
  * software review in Feb: Hall D will focus on topics related to
    offline handling of data taken this run


Simon

  * TDCs, ADCs: studying timing consistency
  * issues with TOF matching to charged tracks
  * measured TOF speed-of-light about 14 to 16 cm/ns
  * matching charged tracks to start counter has inefficiencies
  * matching start counter times with tagger a challenge at present


Lubomir

  * Luke Robinson has been awarded a DOE Fellowship. He will start here
    in March, will be here for a year
  * FDC reconstruction has good starting time now, from start counter
  * plotting drift times
  * recover same resolution as in EEL cosmic data


Yi

  * will be leaving JLab for an opportunity near Chicago, starts end of
    January...sad news for Hall D
  * solenoid in stable state with connectors re-seated and ice ball gone
  * Rodrigo Mendez will test MCPMTs from Argonne; there has been
    progress in their fabrication


Mark D.

  * BCAL reconstruction work: low-level objects first calibration
  * analyzing recent tests
  * working on overall calibration scheme

Retrieved from 
"https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_December_15,_2014"

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

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