Modelling of PMT analogue signal (II) Tuning of threshold and rise - - PowerPoint PPT Presentation

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Modelling of PMT analogue signal (II) Tuning of threshold and rise - - PowerPoint PPT Presentation

Modelling of PMT analogue signal (II) Tuning of threshold and rise time M. de Jong 1 Procedure JCalibrateToT / JMergeCalibrateToT / JFitToT input ARCA2 runs 5005 - 5015 write fixed threshold and rise time values to file


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SLIDE 1

Modelling

  • f

PMT analogue signal (II)

Tuning of threshold and rise time

  • M. de Jong

1

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SLIDE 2

Procedure

  • JCalibrateToT / JMergeCalibrateToT / JFitToT
  • input
  • ARCA2 runs 5005 - 5015
  • write fixed threshold and rise time values to file
  • JFitToT option -P <file name>
  • extract mean and RMS from c2 distributions
  • JPrintResult -f <file name>:\^chi2\$ -F “GetMean”
  • JPrintResult -f <file name>:\^chi2\$ -F “GetRMS”
  • put values into TGraph
  • JGraph -f <input file> -o <output file>
  • plot TGraph
  • JPlot1D

2

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SLIDE 3

time-over-threshold

threshold

value measured in lab

3

current value limit

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SLIDE 4

c2 distributions

4

  • ptimum
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SLIDE 5

Summary & Outlook

  • Tuned common values of PMT analogue signal model
  • results compliant with measurements in lab
  • Need to verify simulation of time slewing (shorter rise time)

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