PREX/CREX Monday, April 6, 2015 3:00pm EDT

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Link to the Meeting page PREX/CREX Teleconferences
Last meeting: PREX/CREX Monday, March 30, 2015 3:00pm EDT

The teleconference info is as follows:
       Phone #: +1-888-240-2560 or +1-408-740-7256 and See International Numbers
       Code: 174599135


CREX Target Position by Seamus elog-2977

Ciprian, Seamus, Nickie, Rakitha, Kent, Bob, Caryn, Guido, Dustin, Paul



  • Bob will get input from target experts about the proposed scattering chamber design discussed last week
    • We are still considering the option of unified scattering angle for both CREX and PREX
  • We would also need to decide about Q1 collimator design. Can we use a unified design with minimum access to this area during PREX/CREX transition
  • In the elog 2977 linked about Seamus' estimation for the target location is around 30 cm from PREX location but Bob's estimation is about 45 cm
    • We need to understand why this discrepancy
  • PREX/CREX transverse asymmetry issues
    • The aberration seen during PREX-I where transverse detector was sensitive to the non-symmetric phi distribution which could be due to an optics issue
      • We need to find this correlation in PREX-I data and then try to reproduce in the optics simulation
      • We need to understand this before PREX-II
    • Transverse asymmetry estimation for Calcium needs attention
      • We can extrapolate (nuclei, Q2 and E) based on H, Al, C, and Pb transverse measurements to estimate transverse asymmetry from CREX measurement.


  • Beam parasitic studies needs a to-do list

TO DO Lists

  • 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