Difference between revisions of "Compton Meeting, September 17, 2014"

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(New page: <pre> *********NEW BLUEJEANS CALL-IN INSTRUCTIONS********* ---------------------------------------------------- 1. Dial Toll-Free Number: 1-888-240-2560 (U.S. & Canada) 2. International pa...)
 
 
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** Last meeting: let's see how ACCUM/SCALER ratio looks before committing
 
** Last meeting: let's see how ACCUM/SCALER ratio looks before committing
 
** This meeting: ACCUM/SCALER results cause for concern?
 
** This meeting: ACCUM/SCALER results cause for concern?
 +
* Rootfiles for the runs 23677 - 23764 missing (these had a different laser period)
  
 
=== Electron detector ===
 
=== Electron detector ===
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=== Photon Detector ===
 
=== Photon Detector ===
 
* Analysis updates
 
* Analysis updates
−
** Pedestal extraction progress
+
** Pedestal extraction progress (complete?)
−
*** [https://qweak.jlab.org/elog/Photon+Detector/273 Excluding additional signals]
+
*** [http://helicity.physics.wm.edu/~cornejo/macro_submit/run_24267/Pedestals_24267_pedestals.png Pedestals now computed for half periods]
−
** [https://qweak.jlab.org/elog/Photon+Detector/274 Notes on Asymmetry Determination]
 
−
** [https://qweak.jlab.org/elog/Photon+Detector/275 Determining Asymmetry after Pedestal Extraction]
 
 
* DAQ updates
 
* DAQ updates
 
* Simulation
 
* Simulation

Latest revision as of 13:25, 17 September 2014

*********NEW BLUEJEANS CALL-IN INSTRUCTIONS*********
----------------------------------------------------
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

  • Unblinding: Run 2 complete by December of this year?
    • Last meeting: let's see how ACCUM/SCALER ratio looks before committing
    • This meeting: ACCUM/SCALER results cause for concern?
  • Rootfiles for the runs 23677 - 23764 missing (these had a different laser period)

Electron detector

  • ACCUM/SCALER polarization comparisons
  • Beam energy: what to use?
    • ARC measurement ~ 1158 MeV (~ 1 MeV higher than Teifenback)
    • What's the sensitivity of the polarization extraction? Erik found small numbers for fixed COmpton edge analysis (0.07%/MeV) Edet log 407.
  • Run 1 analysis
  • Remaining items on big uncertainty table (helicity correlated positions and angles, etc.)

Photon Detector

Laser

  • N/A

Minutes

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