Meeting Time and Place =

Tuesday, December 10, 1:30pm 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_25,_2019_FCAL_Insert_Design_Meeting
Discuss Tungsten absorber
- Cover 1.5 crystals ok?
- Rohacell supported
Monitoring System
- Testing plan?
- 1mm fibers - Josh has them
- 15cm square with 6mm 45 degree bevel - 2 pieces made
- Diamond end mill procured
12 crystal test setup
- All hardware fabricated and installed
9 piece Magnetic field test setup
- Steel shields annealed and mu metal installed
- 3 in-oz torque wrench procured
- Josh working on assy
- Additional field test in Dipole
Design Requirements/Specs
Crystal Array
- Crystals, 2.05cm square, 20cm long
- Design for 40 x 40 array with ability to go 32 x 32
- 2 x 2 crystal hole with steel insert, 2mm wall, 3.8cm ID
- Inset crystals 12.5cm DS of Lead glass blocks
- use 25um brass straps
- 350 um mu metal
- 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