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MC Misalignment

MC Misalignment. George Vesztergombi. Tracker DPG meeting, 25.11.2011. Budapest: Adam Agocs, Krisztian Krajczar, Ferenc Sikler, George Vesztergombi DESY: Joerg Behr, Gero Flucke, Justyna Tomaszewska CERN: Alessio Bonato, Roberto Castello

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MC Misalignment

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  1. MC Misalignment George Vesztergombi Tracker DPG meeting, 25.11.2011

  2. Budapest: Adam Agocs, Krisztian Krajczar, Ferenc Sikler, George Vesztergombi DESY: Joerg Behr, Gero Flucke, Justyna Tomaszewska CERN: Alessio Bonato, Roberto Castello Aachen: Natalie Heracleous Credits Budapest Group

  3. Latest startup Dec 2010, only cosmics + minbias Intro Plots from Adam or Natalie? Z with only IDEAL and Startup geoms Budapest Group

  4. Aim: find an alignment (including sensor bow parameters) on MC, which performs close to the current data alignment Momentum biases as seen with Z-mass validation Local precision as seen with track based validation Geometry production: starting from an MC geometry + bow parameters from data ~ similar to data approach Strategy Budapest Group

  5. Input: same datasets as in real data: Isolated muons from W (16.3 M tracks) Isolated muons from QCD-mu enriched events (2.3 M tracks) Minbias tracks (450k events ~ 4.5 M tracks) Zmumu events using mass constraint (390k events) Peak mode cosmics (1.8 M used tracks) Deco mode cosmics (1.7 M used tracks) Different weights for cosmics (x2, x0.5) → negligible change in the produced geometry Datasets Budapest Group

  6. pT and eta distribution in data and MC Budapest Group

  7. Alignments starting from ideal and startup MC geometries + bows from data: The presence of the Z-mass φ-mode seems completely determined by the starting geometry Roberto produced hybrid geometries which lay between ideal and startup: Starting from ideal and adding a fraction of the difference from startup IDEALplus_02Delta IDEALplus_033Delta IDEALplus_05Delta List of valid geometries Budapest Group

  8. IDEALplus_05Delta Kinks and δ-bows Realigned bows Budapest Group

  9. Track based validation DMR – BPIX-x, BPIX-y, FPIX-x, FPIX-y, TEC, TOB Budapest Group

  10. Track based validation DRR – BPIX-x, BPIX-y, FPIX-x, FPIX-y, TEC, TOB Budapest Group

  11. Cosmic split ΔK - ΔΘ Budapest Group

  12. Mass peak Z validation Plots from Natalie Budapest Group

  13. MZ vs η, MZ vs Φ for all tracker Z validation Budapest Group http://natalie.web.cern.ch/natalie/directory/Tracker_Alignement_Task/111111/All/

  14. MZ vs Φ in Barrel, MZ vs Φ in TEC+ Z validation TEC+ Barrel TEC+ Barrel Budapest Group http://natalie.web.cern.ch/natalie/directory/Tracker_Alignement_Task/111111/TEC+/

  15. MZ vs Δη Z validation Plots from Natalie/Roberto? Budapest Group

  16. The BPIX centred IDEALplus_05Delta is chosen Chosen geometry Budapest Group

  17. Geometry comparisons IDEAL vs IDEALplus_05Delta Centred - BPIX Budapest Group

  18. Geometry comparisons IDEAL vs IDEALplus_05Delta Centred - TOB Budapest Group

  19. Summary Conclusions Outlook Budapest Group

  20. Backup slides Budapest Group

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