July 09, 2020 CPP Design Meeting

Meeting Time and Place

Thursday July 09, 2020, 1:30pm Bluejeans https://bluejeans.com/735541157/3638?src=calendarLink

• Present - Elton, Dave, Bobby, Ilya, Eugene, Rory (remote)

Agenda

• Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/June_18,_2020_CPP_Design_Meeting
• Upcoming run, possible testschedule Media:CPP_Tests_Aug2020.pdf

Assume that nominal the GlueX configuration consists of

• No Pb shielding
• DIRC installed
• Solenoid field at 1350 A

CPP Test Configuration

• With and without Pb shielding
• DIRC removed
• Solenoid field at 1350 A (no change)

Screenshots of test layout media:CPP_Testconfig.jpg  media:CPP_Testconfig2.jpg
media:CPP_Testconfig3.jpg  media:CPP_Testconfig4.jpg 
media:CPP_Testconfig5.jpg  media:CPP_Testconfig6.jpg

Possible sequence and times

1. CPP test DAQ setup: 2 hrs
2. Repeat measurement with nominal GlueX configuration: 2 hrs
3. Configure experiment for CPP Test: 12 hours max
4. Start with no DIRC, no shielding
5. Take data: 2 hours
6. Install Pb shielding: 2 hours
7. Take data: 2 hours
8. Install 2 Pb shields: 2 hours
9. Take data: 2 hours
10. Restore nominal GlueX configuration: 4 hours.

Total time = 30 hours

The DIRC will have to be surveyed following the test.

Note by Elton: An updated schedule can be found in CPP Test 2020 - Schedule

• Things to work out
  • Gas line manifold
  • Adjustable lead absorber
  • Alignment hardware
  • Complete structural analysis
  • Develop Detailed installation plan
  • Develop Design/operational/Maintenance Requirements

Minutes and Action Items

• Reviewed minutes of last meeting
• Bobby presented the configuration and the process was discussed - generally ok
• Need to add platform to set lead on so 1 person can change it
• Elton will obtain approval from Eugene to procure/build components
• Set up new meeting in 2 weeks