December 02, 2021 CPP Design Meeting

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Revision as of 14:12, 2 December 2021 by Whitey (Talk | contribs) (Agenda)

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Meeting Time and Place

Thursday December 02, 2021, 3:00pm 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/November_18,_2021_CPP_Design_Meeting
  • Beam extend till December 21 - this will delay start of installation but we should be fine
  • Testing status - Beni/Elton
  • Design/Fab/Procurement status
    • Lead absorbers - Due in next week
    • All assembly hardware either here or due in by December
    • Test install in the TEDF High bay - use of 2 or 3 chambers
Cpp install chambers.pdf Cpp install chambers2.pdf
  • Installation/assy 3D Model and dwgs
    • LV attach
    • Scintillator orientation
    • assembly components - drawings released
    • Installation drawings in final review
  • Target Design in work
    Cpp target5.jpg
    Cpp target6.jpg
    Cpp target7.jpg
    Cpp target8.jpg
    • Most parts made (a good portion are 3D printed)
    • Will do a test assy by the end of the month


  • Things to work out
    • Gas system, manifold/bubblers (Beni has some)
    • Complete structural analysis - approved by Tom Renzo - need to release into system
    • Develop Detailed installation plan
    • Develop Design/operational/Maintenance Requirements
    • Modified US vacuum system
    • Solid target installation
    • Installation drawing including Microscope move
    • CPP Detector operations in Hall D OSP
    • Possible use of nitrogen flow for cooling electronics in Faraday cage

Minutes

  • Elton met with nick and discussed LV box. Need to make bracket smaller (1/16" thick) boxes should be on top-north corner of each chamber
  • For fiducializing chambers, all four edges or bolt holes can be used to find center. Machining is very accurate
  • Proposed chamber orientation good - horizontal x-ray port DS, Vertical x-ray port US
  • Rory/Elton requested 4 scintillator paddles, 2 BL and 2 BR in vertical position equally spaced (15" oc). To be held by light guides, maybe a V block
  • Lead Target needs to be pressed flat since it is malleable and has the center protruding

Action Items

  • Stephanie to design thinner "L" bracket for the LV box
  • Tim - Get with S&A group to discuss chamber fiducialization and alignment
  • Rory to flatten lead target
  • Stephanie to model and place scintillators and attachments
  • Release installation drawings - Tim/Stephanie
  • continue work on target installation - Bobby