You are viewing an old version of this page. View the current version.

Compare with Current View Page History

Version 1 Next »


Major Changes

  • Use Pattern Recognition in addition to GEANT model to determine which tiles and ribbons to associate with tracks
    • This allows us to handle near misses, which is needed to do efficiency studies
  • Have information be associated with tracks, instead of having a single big set for the whole event
    • This makes using the event display much easier
    • This makes getting access to information in Recon root files easier
  • Handle track errors correctly
    • This wasn't being done before
    • This looks nice in the event display
  • Sort ACD - track associations by a combined signal size/ distance quality measure instead of using only distance
    • This gets rid of problems with shadowing, where one association with a small signal masked another nearby one with a larger signal
  • Always calculate gaps to tiles
    • Before this was a hodge podge, we had to handle cases where the track hit ribbons, tiles and missed everything differently.

  Minor Changes

  • Change the way the distance of closest approach is calculated when the POCA occurs exactly at the head of the track
    • This effects some events track which graze side tiles (and a very few which graze to tiles), but only when the distances of closest approach is quite large
  • Use the hardware veto information instead of the energy information in counting number of tiles hit in the Merit Variables
    • This handles issues with the slower timing of the PHA electronics

 

  • No labels