CMS collaboration
Environment Condition CMS CERN-LHC
Condition database includes non-event-related information (Alignment, Calibration, Temperature, etc.) and parameters for simulation/reconstruction/analysis software.
These files are needed when running a CMSSW job on the open data environment (VM or container), and they are available in the /cvmfs/cms-opendata-conddb.cern.ch file system. They are automatically read from /cvmfs/cms-opendata-conddb.cern.ch/START42_V17B runtime.
START42_V17B is to be used with the simulated data.
See further information in the guide to CMS condition database.
For 2010 CMS collision data see:
Condition data for 2010 CMS proton-proton collision data at 7 TeV
If you are using the CMS Virtual Machine image or the CMS container image environments, then the condition data files will be served automatically from /cvmfs/cms-opendata-conddb.cern.ch/
or from a file server at runtime, and therefore you do not need to download these files. If you need to have them locally, you can download them from here.
These open data are released under the Creative Commons Zero v1.0 Universal license.
Neither the experiment(s) ( CMS ) nor CERN endorse any works, scientific or otherwise, produced using these data.