PREX/CREX Monday, September 21, 2015 2:00pm EDT

Link to the Meeting page PREX/CREX Teleconferences
Last meeting: PREX/CREX Monday, September 14, 2015 2:00pm EDT

The teleconference info is as follows:

       Phone #: +1-888-240-2560 or +1-408-740-7256 and See International Numbers
       Code: 174599135

Agenda

Present:
Ciprian, Kent, Seamus, Paul, Dustin, Guido, Ricky, Tyler, Nickie, Rakitha

Minutes

• Ciprian working on the Pan, online monitor still need someone to work on it
• Tyler coming to JLab Oct 4th and stay till Oct 12th
• Lumi update by Dustin,
  • Ed Folts can de-install old lumi to replace new ones. He will uninstall them. Nickie will coordinate for Dustin
  • Need bottle of N2 gas from Ed
  • Rate calculations for small angle lumi are ongoing - Dustin
• 1g/cm^2 (2%) Carbon target to be put
  • Make sure beam energy is large and beam is stable
  • we expect beam energy to 9 GeV
  • we will not use low energy 6 GeV beam on 1g carbon target
  • we need series of guide lines for using the Carbon target
  • Not more than 20 uA beam
• Heat calculation for Carbon target
  • 20 uA on 1g/cm^2 of target
  • Is the heat flow out of the carbon target as an issue?
  • estimate from Dave Meeking ? back of the envelope based on dE/dx for 2% (0.5 cm) carbon target we get about 34 W at 20 uA
  • Carbon target will needs to be cooled.
• Charles OK with ECAL parked out of the acceptance
• Lumi area is crowded we may have to check this out.
• Halo monitor :
  • 1. movable halo target with a hole DS of raster to intercept the halo around the beam
  • 2. Scintillator detector to read the halo target scattered background
• Do we need large angle lumi monitors? Kent and KK
• what's the beam-pipe configuration coming out of target.
  • Nickie is going to make some diagrams and pictures to map DS of target area beam pipe
• Tyler used Silvu's CAD drawing to generate pictures for scattering chamber area.
• Lead dimensions for collimator housing and thickness is not based on simulations or activation studies
  • Front and back of the lead box need shielding due to activation of the collimator is on the front and back of the bore of the collimator
  • We need to input from Alan at the stage
  • size of the beam-pipe in the scattering chamber should match to a standard con-flat flange - Tyler, Kent, Ricky
• We will need a task list with priorities - Kent

Misc.

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