Object Oriented Tracking Software for the ATLAS Experiment

Tracking

• CLUSTER is basic measurement information for calorimeter and tracker, derived from digitisations (RAW_DATA). (A SPACE_POINT is made from 1 or 2 CLUSTERs in tracker.)
• SEED is starting point to build ROAD and begin TRACK search.
• ROAD is envelope used for collecting tracker CLUSTERs in order to find TRACKs.
• TRACK is set of tracker CLUSTERs which fit electron hypothesis.

see FITTER and Event Loop