Compton Meeting, November 28, 2012 (F228)

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Agenda

Meeting room, F228: NOTE DIFFERENT ROOM THIS WEEK

Miscellaneous

• Pass 2 analysis update

Laser

• Schedule for laser polarization summary

Electron Detector

• Updates on Amrendra's parallel analysis
• 3 vs. 2 parameter fit

Photon Detector

• Tasks
  • Slug-wise analysis of pass 2 data (once pass 2 is complete)
  • Analytic calculation of analyzing power with continuous fit to non-linearity
  • Lead-tungstate in MC
• Lead measurements

Meeting Notes

Present: Dave Gaskell, Amrendra Narayan, Mark Dalton, Juan Carlos Cornejo (notes), Wouter Deconinck, Dipunkar Dutta

• Discussion of new meeting time
  • Will have to wait to see what times the Monday Analysis Meeting and the Friday Physics Meeting get reschedule to.
• Pass2 Discussion
  • Juan Carlos: Finished processing rootfiles. Took about 3 days, including time needed to store to silo.
  • Mark: Asks for a sample of scripts (every 20th for example) to be fully run to do a quick data quality and script sanity test
    • Assigned to Juan Carlos
• Laser
  • Mark: Will come up with a schedule and plan for the necessary work to start after the counting house is open again
    • Run 1: needs to think about what needs to be done
    • Run 2: plans to monitor reflected light vs time, and look at max deviation setting vs polarization
• Electron Detector
  • Amrendra: Ran scripts through all of pass 2 data.
    • Compton edge differences are gone.
    • Differences were caused by comparing time normalized signal to background, but now can compare charge normalized signal to background.
  • Dave: wants Amrendra to provide the function that he is using for his fits
  • Dave: wants someone to look at Vladas's method and Amrendra's method side by side to look for mistakes
  • Dave: Asks about consensus about the 2-parameter vs 3 parameter affair?
    • No consensus yet
  • Dave: Will check what happens when one uses an additive factor, instead of a multiplicative factor in these fits by looking at the simulation
• Photon Detector
  • Juan Carlos: Focused on GEANT4 simulation. Something wrong with it because many events were still missing the lead tungstate
  • Juan Carlos: Measured the thin lead (was >2mm), but still needs to make an ELOG about it.