Alignment Tips

• Some histograms (e.g. residual mean vs sub-detector) needs to be merged and post-reprocess using commands below:

  DQHistogramMerge.py list.txt monitoring_merged.root True 
     

CMS Alignment

• ICHEP 2012 poster proceeding: Alignment procedure for the CMS silicon tracker (including module bowing) by Jeorg Behr
• CMS Muon Alignment Links
• HIP at CMS

Other Alignment

• CERN-THESIS-2007-049: Calibration and Alignment of the CMS Silicon Tracking Detector by Markus Stoye. Not talk too much about MCS.
• CMS 2007: Application of Survey Measurements in Tracker Alignment in CMS
• 0809.3823: Local Alignment of the BABAR Silicon Vertex Tracking Detector by D. N. Brown, A. V. Gritsan, Z. J. Guo, D. Roberts
• 0910.2505: Alignment of the CMS Silicon Tracker during Commissioning with Cosmic Rays
• LHCbDetectorAlignment

Reference

• Note/Presentation/thesis
• Blobel talk for MillePede: Alignment of track detectors – Large scale optimization
• Wouter Hulsbergen: on alignment with Kalman filter tracks in the LHC alignment workshop, explain the new alignment code formula in ATLAS
• Hulsbergen in Vtx 2009: Nice overview for all alignment algorithms
• A CONF note to describe the state-of-the-art IDALignment development cds internal
• A PUB note to describe the alignment software ATLAS-SOFT-2014-003

Sample

• Gx2 AlignmentCSC
• Gx2 M8plus Results

Fit Straight line with uncerntainties

• www.che.udel.edu Fitting Experimental Data to Straight Lines (Including Error)
• Meas. Sci. Technol. 18 (2007) 3438–3442 A weighted total least-squares algorithm for fitting a straight line by Michael Krystek and Mathias Anton
• Metrologia 45 (2008) 290–298: Estimation and uncertainty in fitting straight lines to data: different techniques by R Willink

Robust Alignment

• Jul 21 2009 Test With 15.3.0

  source ~/cmthome/setup.sh -tag=15.3.0
  cd ~/testarea/15.3.0/ 
  cmt co -r InDetAlignExample-00-00-82 InnerDetector/InDetExample/InDetAlignExample
  cmt co -r SiRobustAlignTools-00-00-37 InnerDetector/InDetAlignTools/SiRobustAlignTools
  cmt co -r SiRobustAlignAlgs-01-05-16 InnerDetector/InDetAlignAlgs/SiRobustAlignAlgs
     

• Compile each package, e.g.

  cd InnerDetector/InDetAlignTools/SiRobustAlignTools/cmt
  cmt config
  source setup.sh
  gmake
     

• If I work in /home/schsu/scratch0/std_plot/testarea/15.3.0, I'll get following errors

  mkdir: cannot create directory `/include': Permission denied
  Installing files from standard ../SiRobustAlignAlgs to /include/SiRobustAlignAlgs
     

• Edit InnerDetector/InDetExample/InDetAlignExample/share/InDetAlignExample_IteratorForSi.py

  RunGlobalChi2Align = False
  RunRobustAlign     = True
     

• Jul 23 test with Mahsana
  • reference results: RA talk on April 29
  • Use L4 output as starting point
    • Reproduce L3 results (Tx,Ty,Tz)
    • Test gamma rotation
    • Use RA macro to draw the plots

New Alignment

• Silicon Misalignment CSC: Use it to compare to Gx2 results
• ATL-COM-SOFT-2012-006: Common Framework Implementation for the Track-Based Alignment of the ATLAS Detector

ATLAS Muon alignment

• talk: mini-workshop for MC/Data comparison, Muon Alignment and Smeared A-lines by Christoph Amelung