PREX/CREX Thursday, January 16, 2014 10:00am EDT

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Link to the Meeting page PREX/CREX Teleconferences
Last meeting: PREX/CREX Thursday, January 09, 2014 10:00am EDT

The teleconference info is as follows:
       Phone #: 1-866-740-1260
       Code: 6931422


Updates from Rakitha

Updates from Nickie

Rakitha, Seamus, Dustin, Paul, Guido, Lorenzo, Nickie, Bob, KK, Juliette and Kent


  • We would like to have a optic calibration run plan with a step by step procedure for commissioning.
    • For this, review what happened during last run to improve our run plan
    • In last running we saw an asymmetry in rates between two spectrometers as well as discrepancy between simulation and data
  • We want to generate optics plots for CREX and for inelastic distribution
    • For CREX, we have to make sure transverse distribution at the focal plane is within the detector size
  • It would be nice to have real-time viewer for optics studies in commissioning.
  • Neutron radiation, the important question to ask is,
    • Uniform distribution or 1/R^2 distribution of neutrons in the hall. We can assume that low E neutrons are uniform but high E neutrons drop as 1/R^2. So goal of the next simulation is to verify this claim. Also we want to know whether where neutrons are created is going to matter for radiation on electronics.
    • In PREX-I there were considerably amount of neutron radiation generated from the wall as back scattered. See elog-2854
    • We want to see the plots generated in elog-2769 and elog-2854 with our new PREX-II collimator
    • Lorenzo have done an analysis with dumping electron beam/neutrons into concrete and see neutron production/radiation. He will update when he finds the analysis references.
  • We have to discuss the cooling issues for our collimator with Engineering (Alan).


  • From Last Meeting
    • Beam parasitic studies

TO DO Lists

  • Have a optic calibration run plan (disussed in 01/16/2014 meeting)
  • It would be nice to have real-time viewer for optics studies in commissioning (disussed in 01/16/2014 meeting)

TO DO Lists link: PREX, CREX