Compton Meeting, May 7, 2013 (L210A)

1. Dial Toll-Free Number: 866-740-1260 (U.S. & Canada)
2. International participants dial:
Toll Number: 303-248-0285=
Or International Toll-Free Number: http://www.readytalk.com/intl
3. Enter your 7-digit access code, followed by “#”

 --> our access code is 3227471

Agenda

Usual meeting room (L210A).

Miscellaneous

• Nothing.

Laser

• Schedule for laser table work (Mark and Dave).

Photon Detector

• Photon attenuation due to copper window: Photon log 260
• Look at backgrounds via scalers - correlate with extracted asymmetries.
  • Not yet, plan to do it along with a replay to save time.
• Not ELOG worthy yet, but:
  • Looking at ComptonG4 without copper, lead or air in the tunnel, and found some curious things:
  • Found a few events that deposited more energy than the incident photon [1], I'm investigating, but probably a fluke.
  • I'm checking that the energy deposited is correct and looking at leakage[2]
    • I just find it curious that the smaller the energy the more energy is "lost" also investigating.

Electron detector

• Studies including clustering trigger (now including energy cut)
  • Polarization vs. cluster size Edet log 522
  • Polarization vs. number of planes required in trigger Edet log 523
• Require "straight track" in edet (same strip hit in all 3 planes plane)
  • Hit distribution Edet log 524
  • Asymmetry and extracted polarization Edet log 525