Alignment

Definitions

Alignment describes the corrections to the geometric descriptions of actual detector pieces compared to their nominal as-engineered description. An example is rigid body alignment, which describes the detector piece's position and orientation within some larger frame, ignoring any internal distortions to the piece. Alignment is often built up out of a nested set of corrections, moving outwards to larger frames.

The specifics of the tracker alignment are described on the page TrackerAlignment.