Difference between revisions of "Minutes 061120"

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''Attendees'': Alex (Indiana), Simon, David (JLab), Christine (Athens), George, Blake, Yianna, Zisis (Regina)
 
''Attendees'': Alex (Indiana), Simon, David (JLab), Christine (Athens), George, Blake, Yianna, Zisis (Regina)
  
# '''Blake's Analysis''': Blake walked us through his initial analysis on the [[BCAL Beam Test Plots, November 20, 2006|ADC calibration]] using the MC.  There's a hump at low values (~channel 200) in the individual cell spectra, adding up to a hump in the summed ADC (North and South).  This is affecting the MeV/channel calibration.  Cutting the hump improves the fits.  The problem does not seem to be related to the pedestal subtraction.  All these plots are from Run 2334 (our nominal run).
+
* '''Blake's Analysis''': Blake walked us through his initial analysis on the [[BCAL Beam Test Plots, November 20, 2006|ADC calibration]] using the MC.  There's a hump at low values (~channel 200) in the individual cell spectra, adding up to a hump in the summed ADC (North and South).  This is affecting the MeV/channel calibration.  Cutting the hump improves the fits.  The problem does not seem to be related to the pedestal subtraction.  All these plots are from Run 2334 (our nominal run).
#* Investigate the origin of the hump.
+
** Investigate the origin of the hump.
#* Use timing information in this search (Blake).
+
** Use timing information in this search (Blake).
#* Add VETO to dst ROOT trees (David by end of week).
+
** Add VETO to dst ROOT trees (David by end of week).
  
 
'''Useful Links'''
 
'''Useful Links'''
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# ''Pedestals, gain factors, calibration:''  Tagger/MC approach (Regina), Summed approach (Indiana).
 
# ''Pedestals, gain factors, calibration:''  Tagger/MC approach (Regina), Summed approach (Indiana).
 
# ''Photon analysis:'' Blake.
 
# ''Photon analysis:'' Blake.
 +
# ''Electron analysis:'' Christine, Zisis.
 
# ''Cosmics analysis:'' Yianna.
 
# ''Cosmics analysis:'' Yianna.
 
# ''Job submission:'' Blake and David.
 
# ''Job submission:'' Blake and David.
# ''Position measurements:'' Zisis will coordinate.
 

Revision as of 12:09, 20 November 2006

Attendees: Alex (Indiana), Simon, David (JLab), Christine (Athens), George, Blake, Yianna, Zisis (Regina)

  • Blake's Analysis: Blake walked us through his initial analysis on the ADC calibration using the MC. There's a hump at low values (~channel 200) in the individual cell spectra, adding up to a hump in the summed ADC (North and South). This is affecting the MeV/channel calibration. Cutting the hump improves the fits. The problem does not seem to be related to the pedestal subtraction. All these plots are from Run 2334 (our nominal run).
    • Investigate the origin of the hump.
    • Use timing information in this search (Blake).
    • Add VETO to dst ROOT trees (David by end of week).

Useful Links


  1. Beam Test Run Plan
  2. Run Table
  3. GlueX E-Log
  4. Online DAQ Database

Action Items


  1. Pedestals, gain factors, calibration: Tagger/MC approach (Regina), Summed approach (Indiana).
  2. Photon analysis: Blake.
  3. Electron analysis: Christine, Zisis.
  4. Cosmics analysis: Yianna.
  5. Job submission: Blake and David.