july 2011 whcal test beam analysis update on pedestals & noise a few event displays
DESCRIPTION
July 2011 WHCAL Test Beam Analysis Update on Pedestals & Noise A few event displays. Stability – average per run. Slide from last week Average/RMS per run -> bias depending number of pedestal blocks per run. Low stat runs. Non uniform pedestals. calibration runs. - PowerPoint PPT PresentationTRANSCRIPT
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July 2011 WHCAL Test Beam AnalysisJuly 2011 WHCAL Test Beam Analysis
Update on Pedestals & NoiseUpdate on Pedestals & NoiseA few event displaysA few event displays
Damien Prieur - W-HCAL analysis meeting
Damien Prieur - W-HCAL analysis meeting 2
Stability – average per run
calibration runs
Electron runs
Low stat runs
‘shift in pedestal for slot19 FE0’
Non uniform pedestals
Slide from last week Average/RMS per run -> bias depending number of pedestal blocks per run
Damien Prieur - W-HCAL analysis meeting 3
Stability – average per pedestal block
Average/RMS per pedestal block (500 events) Higher spread of <ADC-pedestal> but more relevant results
361471
361400
Damien Prieur - W-HCAL analysis meeting 4
Stability – single layer (3)
Damien Prieur - W-HCAL analysis meeting
Stability – run 361400
5
<ADC –ped>
RMS
Damien Prieur - W-HCAL analysis meeting 6
Stability – run 361471
Damien Prieur - W-HCAL analysis meeting 7
Stability – layer 33
Energy sum run 361473- Full calorimeter
- Without layer 33
Damien Prieur - W-HCAL analysis meeting 8Event 6999
Event display – run 361473
Event 2634
Event 4734
Damien Prieur - W-HCAL analysis meeting 9
Pedestals are fine Some stability problems with layer 33 but no dramatic impact on physics
Stable noise Low nHits/cogZ events
Look like genuine particles…
Summary