October 25, 2019 FCAL Insert Design Meeting

Meeting Time and Place =

Wednesday Oct, 9 10:00 am At Jefferson Lab, room TED 2504

• Present - Sasha Somov, Josh Crafts, Eugene, Stephanie, Keith Harding, Tim, Fernando, Chris Stanislav

Agenda

• Action items from last meeting https://halldweb.jlab.org/wiki/index.php/October_9,_2019_FCAL_Insert_Design_Meeting
• Discuss Tungsten absorber
  • Cover 1.5 crystals ok?
  • Rohacell supported
• Monitoring System
  • Testing plan
  • 1mm fibers
  • 15cm square with 6mm 45 degree bevel
• Cooling of blocks - 2.1 KW needed
• Support structure and assy sequence
  • Media:Module installation procedure.pdf
• electronics patch panels DS of crystal pmts
• Discuss Testing of soldered assembly and mag field testing
• Discuss test fixture for PMTs in beam

Minutes and Action Items

• Josh has 1mm fiber for test
• Mu metal shields are in house - 6mm shorter than steel
• 12 crystal test setup
  • No Survey needed for 12 crystal tests (initially)
  • Need vertical adjustment capability
  • Ste