Mokka vs. LCDG4 Comparison

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Mokka vs. LCDG4 Comparison
Guilherme, Jeremy Sep.17, 2003
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Data Samples

• Single particle samples, 1000 evts each
• 10 GeV muons
• 50 Gev pions (flat in phi)
• 50 electrons (theta 60, phi 90)
• Warning different kinematics!!

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Energy per ECal layer - pions
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Energy per HCal layer - pions
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Live energy per cell in ECal
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Live energies per cell in Hcal
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LCDG4 Eabs per cell in Ecal
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LCDG4 Eabs in Ecal (log scale)
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LCDG4 Eabs per cell in Hcal
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Total live energy - pions
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Total corrected energy - pions
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Total live energy electrons
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Total corrected energy electrons
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Conclusions

• Likely there are still some bugs in LCDG4
• Despite clear disagreements in EM showers between
  Mokka and LCDG4, they show better agreement among
  them than with Gismo
• None of them are not properly corrected using
  Gismo-based sampling fractions
• More investigations needed

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Next steps

• Repeat comparisons using projective LCDG4
• Fair comparison same versions of libraries,
  same cuts, same kinematics
• Find/fix problem with fake peaks in absorber
  energies