CPP Meeting, April 28, 2021

• Rory presents note on construction. tries for comprehensive document, a gluex doc by the afternoon
  • electronics, schematics, parts choices, Humiseal
  • grounding scheme
  • assembly and construction
  • testing procedure
  • testing results, drift time relationship measurements with different gasses
  • operation
  • appendix with mechanical drawings
• Rory: get eighth detector going
  • first window for coming down: week of collab. meeting
  • solo trip initially, drop off chambers
  • send Albert later (first visit to JLab for him)
• Elton: updated ERR response document
  • cleanup done
  • incorporate ? from Ilya
  • timeline for publication
• Elton: schedule review
  • now stuff: mechanical ordered,
  • Hai finished stuff on test stand for trigger
  • microscope: confirm high end of microscope decided, distance from window, GlueX 9 mm fro focal plane, but on focal plane for 6 GeV, does not effect maufactured pieces, still set
  • software: middle of geometry (Beni) and reconstrcution underway (simon)
• Elton: publication schedule
  • Rory: time-scale driven by simulation, what we have is reasonable
• Elton: responsibilities
• Simon: pushed tracking changes to github
  • made geometry change in HDDS repository, not in CCDB yet
  • Beni will do that
• Elton tried muons with mcwrapper, crashed early on
• Beni: test area prep
  • EEL 126: contact made with Walt Akers and Jack Segal
  • want chambers horizontal to use scintillators as trigger
  • 90/10 by volume at STP, 5 cc/s
  • Rory will bring HV power supply
  • Need low-voltage power supply at/from JLab
• Elton: need a meeting on electronics with Fernando, Chris, Hovanes
  • use next week Wed. 9 am slot
• Beni: get Tim’s crew involved in physical moving of stuff
• Andrew:
  • FCAL elasticity
  • difference between kinfit energy and measured, as a fucntion of energy
  • do a fit for an empirical correction
  • elasticity looks much better
  • at beamline meeting eugene questions a 0.04% pion contamination