Next: BOS Banks
Up: Segment Finding
Previous: Appendixes
The uncommon terms used in this note are listed below.
- All Points Grid
- A grid used to cross-reference all
points placed on reconstructed segments with the
absolute value of their MC ID.
- Assigned Segment
- Matched segments which pass the
percentage contamination cut.
- Contamination
- The total number of points placed on
a reconstructed segment minus the number of leading
entry points.
- Digitisation Data
- Hit information after a
simulation of the detector resolutions,
inefficiencies, and noise.
- Entry
- Each element of the grid is termed an Entry.
- Found Segment
- A MC segment that has a reconstructed
segment assigned to it.
- Genuine Points
- Points formed from the correct sense
of the ambiguous drift direction.
- Genuine Points Grid
- A grid used to cross-reference
only genuine points placed on reconstructed segments
with the absolute value of their MC ID.
- Ghost Points
- Points formed from the wrong sense of
the ambiguous drift direction.
- Hit Data
- Ideal CTD responses and pointers to truth
data.
- Truth Track
- A track with at least one found segment
in superlayer one and superlayer three from the same
MC track.
- Leading Entry
- The maximum entry in the genuine
points grid.
- Lost Segment
- A MC segment that does not have a
reconstructed segment assigned to it.
- Matched Segment
- The leading entry of a reconstructed
segment is matched to a MC segment.
- MC ID
- In the MC each hit that is generated has
stored with it the MC track number of its parent
track.
The ID is signed to indicate which sense of the
ambiguous drift direction is the true one.
- MC Segment
- A perfect segment formed from the MC
truth.
- Nasty Segment
- A MC segment that fails the fiducial
cuts.
- Reconstructed Segment
- Segments found by the segment
finding algorithm.
- Segment Grids
- These are two dimensional arrays where
the points placed on a reconstructed segment are
cross-referenced with the MC segments from which they
came.
The complication of the left-right ambiguous drift
direction leads to the definition of two grids (
all points grid and genuine points grid).
- Split Segment
- A MC segment that has more than one
reconstructed segment assigned to it.
- Spurious Segment
- A reconstructed segment that is
not assigned to any MC segment.
- Truth
- The information recorded from the simulation
of the tracking of the generated particles though
the detector.
- Vector Hits
- A reconstructed segment with angle and
position.
Next: BOS Banks
Up: Segment Finding
Previous: Appendixes
Douglas M. Gingrich
Thu Mar 28 18:08:05 MST 1996