Data Structures Task Force Meeting, July 5, 2002

Topics for discussion:

• What information should be saved to the TDS/PDS at each stage of the analyis?
  • What are the stages? Example (TKR for concreteness):
    • Initial particles
    • McParticles and hits
    • Digitization
    • Clustering
    • Remainder of TkrRecon
    • Combining the subsystems
  • "There should be enough information so that the analysis can proceed without recourse to the geometry."
    • Is this what we want?
    • Is the criterion the same for the TDS and the PDS?
    • How about other services? (Bad/Hot strip lists, strip efficiency, ToT calibration, orientation in cosmic coordinates, etc., etc.)
    • At what stage should this criterion be applied?
      • In particular, should McPostionHits contain global coordinates, in addition to, or instead of, local coordinates?
        
• What about "the" ntuple?
  • How do we determine the content of the base or standard ntuple?
  • Where and when should it be calculated?
  • How do users tailor the ntuple?