Tracker misalignment

Complete: 4

Enabling the tracker misalignement

The tracker misalignment is simulated in the same way as in the GEANT-based simulation, by reading one of the scenarii available in the ORCOFF database. The consistency in the choice of the misalignement constants for the Fast and Full simulation is guaranteed by the usage of the GlobalTags (IDEAL_31X has perfect alignement, and STARTUP_31X has misalignement and miscalibration included). For more details about the content of the tags see here

process.GlobalTag.globaltag = "STARTUP_31X::All"

# Apply Tracker misalignment
process.famosSimHits.ApplyAlignment = True
process.misalignedTrackerGeometry.applyAlignment = True

Note: misalignment is applied by default, so you don't need these lines in principle.

Review Status

Reviewer/Editor and Date Comments
AndreaGiammanco - 05 Feb 2013 Removed obsolete instructions
PatriziaAzzi - 07 May 2009 Update for 31X
PatrickJanot - 02 November 2007 More for CMSSW_1_7_X
PatrickJanot - 08 October 2007 Document the one-step misalignment procedure.
PatrickJanot - 26 July 2007 Document the two-step misalignment procedure.
PatrickJanot - 06 July 2007 First draft of the tracker misalignment documentation

Responsible: AndreaGiammanco
Last reviewed by:

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Topic revision: r15 - 2013-02-05 - AndreaGiammanco

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