pp2pp Scintillator Analysis Vertex Determination

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pp2pp Scintillator AnalysisVertex Determination
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pp2pp Scintillator AnalysisRaw TDC Differences
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pp2pp Scintillator AnalysisCorrections

• Determine offsets for cable lengths, etc.
• Correct for ADC-TDC slewing experiment ADC
  range different from calibration ADC range

Needs 2 ns correction. Final offset 911?
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pp2pp Scintillator Analysis
With ADC anti-slewing cuts Arm A Vertex -0.35
0.04 ns Width 2.50 0.02 ns Arm B Vertex
-0.07 0.04 ns Width 2.56 0.03 ns
With full ADC cuts Arm A Vertex -0.35 0.01
ns Width 2.47 0.01 ns Arm B Vertex 0.05
0.02 ns Width 2.49 0.01 ns
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pp2pp Scintillator Analysis

• RP4 RP2 Offsets included but no Slewing
  Corrections
• V -0.30 0.05 ns -1.45 0.05 ns
• W 2.46 0.03 ns 2.48 0.03 ns
• Arm A2 TDC difference has structure

TDC nu22-pd22 looks especially bad
TDC nu21-pd22 shows structure
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pp2pp Scintillator AnalysisTo Do List

• Determine Correction to Slewing Corrections
• Different ADC regions
• Allow us to get better statistics
• Get Final nu11 Offsets
• 2 ns out of line with other TDCs
• How much really why?
• Correct by averaging?
• nu11nu12 vs. pd11pd12
• nd11nd12 vs. pu11pu12