January 28, 2021 CPP Design Meeting/ERR discussion
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Meeting Time and Place
Thursday Jan 28, 2021, 2pm Bluejeans https://bluejeans.com/465620466
- Present - Elton, Dave, Stephanie, Ilya, Rory, Mark S
Agenda
- Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/January_14,_2021_CPP_Design_Meeting_ERR_discussion
- Readiness Review February 10
- Schedule
Media:CPP_Schedule_before_primex_v2.pdf Media:CPP_Schedule_after_primex.pdf
- Solid Pb target support and installation Media:CPP_Target_pic.pdf
- Target change out concept Media:CPP_Target_Mech_concept.jpg
- Microscope move?
- Controls needs?
- Design/Procurement status
- Things to work out
- Gas line manifold
- 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
- ERR discussion
- Meet next Thursday
- Present preliminary slides
- Have all Review documentation uploaded (except presentations) by end of week
- Revamp schedule to meet August start date (Tim)
- Add Target design and procurements to schedule
- Decided to put a new 1/2 rack on wheels on north side of DS platform for electronics
- Electronics and controls needs discussed
- 864 wires- 12 FPC modules - 1 crate
- 6 shv cables - Caen HV supply
- 24 LV channels
- Target design discussed - generally accepted as a concept to be able to switch targets quickly and accurately (< 1mm variation)
- Microscope needs to be moved approx. 2m DS
- Need to check on moving racks with detector or are cables long enough?
- Discussed steel absorber thickness.
- Total thickness should be within +/- 1cm
- Each section should be withing +/- 2cm
- Gas System discussed
- Using CDC mixing tank
- All chambers in parallel
- Rory requests controlling equal flow to each chamber (6 flow tubes)
- Are bubblers needed for each chamber?
- Rory to give additional requirements for the gas system
