L1 Offline Software Release Notes

This page contains succinct release notes for L1 trigger changes in CMSSW. The list of tags added for each release, with detailed explanations, can be found at SWGuideL1TriggerTagList.


Main changes and new features

  • New HF-based minbias trigger quantities
  • CSC beam halo trigger
  • New L1 trigger menus for 1030, 1031 lumi
  • HLT seeding possible from `technical triggers'
  • Lightweight interface to trigger results for AOD
  • Firmware related updates to CSC TPG, CSC TF, DTTF
  • ORCON population modules written
  • L1 branches renamed

Major bugfixes

  • L1CondDB write-read bug fixed for most objects

Known Issues


Main changes and new features

  • GT emulator included in default L1Emulator sequence to produce L1 decision word and particle-map
  • L1Extra now only produces L1Extra particles
  • HLT seeding now uses HLTLevel1GTSeed module
  • First version of L1CondDB tools available
  • All emulator modules now configured via EventSetup
  • Various Jet Counts now available for use in GT algorithms
  • GCT includes optional 'PiecewiseCubic' jet correction parameterisation + constants tuned on 131

Major bugfixes

  • Missing Et phi asymmetry problems fixed

Known Issues

  • L1CondDB tools : write-read to SQLite file only succeeds for L1TriggerKey, other objects fail. Under investigation.


  • Validated against 131HLT6 results
  • Analyzers with dependencies on simulation moved to L1TriggerOffline
  • Many bug fixes (will add the full list here when time allows)

Review status

Reviewer/Editor and Date Comments
JimBrooke - 04 Oct 2007 First version
VasileGhete - 24 Jul 2009 restructured content

Responsible: Vasile Ghete

Edit | Attach | Watch | Print version | History: r5 < r4 < r3 < r2 < r1 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r5 - 2009-07-24 - VasileGhete

    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    CMSPublic All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2023 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
or Ideas, requests, problems regarding TWiki? use Discourse or Send feedback