April 08, 2021 CPP Design Meeting

Meeting Time and Place

Thursday April 08, 2021, 3:30pm Bluejeans https://bluejeans.com/465620466

• Present - Elton, Dave, Stephanie, Ilya, Rory, Mark S, Beni, Simon, Mark I

Agenda

• Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/March_25,_2021_CPP_Design_Meeting
• Microscope move
  • https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4972
• Lead Configuration
  • Media:Lead_joints.pdf
  • Media:Lead_joint_side.pdf
• Do we need new gas system? Not using CDC gas?
  • Can CDC use 90/10 for veto? (Naomi)
  • Can we use CMU gas mixing system?
• Design/Fab/Procurement status
  • Stand
  • Steel
  • Fcal platform mods
• Things to work out
  • Gas line manifold/bubblers (Beni has some)
  • Complete structural analysis
  • Develop Detailed installation plan
  • Develop Design/operational/Maintenance Requirements
  • Modified US vacuum system
  • Solid target installation
  • Documentation for ERR
  • Microscope move

Minutes and Action Items

• Discussed location of Microscope - Tim to check to make sure Micro stand can straddle vacuum support. It turns out it should be no problem
• Discussed being able to move the racks and that we have adequate cable length - Tim checked with Chris Stanislav - appears ok
• Ilya looked at 90 degree joints in lead shield where there is 1/2 inch of steel - turns out ok, but should machine edge so there are no gaps.
• It was decided that the CDC will be used during the experiment so we will need a separate gas system for the CPP. We discussed a completely new mixing tank, pre-mixed bottles or borrowing from CMU