1. Mokka vs. LCDG4 Comparison
Guilherme, Jeremy
Sep.17, 2003

2. 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!!

3. Energy per ECal layer - pions

4. Energy per HCal layer - pions

5. Live energy per cell in ECal

6. Live energies per cell in Hcal

7. LCDG4: Eabs per cell in Ecal

8. LCDG4: Eabs in Ecal (log scale)

9. LCDG4: Eabs per cell in Hcal

10. Total live energy - pions

11. Total corrected energy - pions

12. Total live energy – electrons

13. Total corrected energy – electrons

14. 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

15. 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