Compton Meeting, February 4, 2015

*********NEW BLUEJEANS CALL-IN INSTRUCTIONS*********
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1. Dial Toll-Free Number: 1-888-240-2560 (U.S. & Canada)
2. International participants dial:
Toll Number: 1-408-740-7256
3. Enter meeting ID: 831693292

Agenda

No meeting room. Call in, or come to Dave's office.

General

• Polarimetry update at Qweak physics meeting this week.

Electron detector

• Rates for scalers and accumulators: Edet log 654
• Difference in asymmetry errors (scaler vs. accumulator): Edet log 655
• Ratio (Sc/Accum) of rates (laser on-off). Scaler rates always larger: Edet log 656
• Things we need to add/study for error table
  • Helicity correlated position and angle - study as a function of beam/laser offset
  • Fixed beam angle offset -what's the effect on asymmetry fit?

Photon Detector

• GEANT4 updates
  • Update on snapshot comparisons to simulation Photon log 288 and Photon log 289
  • Updated analyzing power?
• Effect of reflections on asymmetry Photon log 287

Laser

• N/A