Difference between revisions of "Mattione Update 05072012"
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== Spiral Fitting - Histograms == | == Spiral Fitting - Histograms == | ||
| + | * Improvements from last time (04/25/2012): | ||
| + | ** Changed track candidate algorithm structure (removes memory explosion & slow reconstruction): Yielded ~10% fewer events with no track candidates. | ||
| + | ** Switched to new Kalman Filter code (includes fix for broken tracks): | ||
| + | ** Truncated track stepping once track turns back inwards towards the target (Δr < 0.0): Yielded X% fewer events with no time-based tracks. | ||
| + | |||
* # Reconstructed Tracks / Event: | * # Reconstructed Tracks / Event: | ||
| − | ** NOTE: Hit selectors disabled for wire based & time based fits: | + | ** NOTE: Hit selectors disabled for wire based & time based fits, except for "SVN Code": instead use hits from track candidates (and ignore hits after spiral turn back inwards) |
{| class="wikitable" | {| class="wikitable" | ||
| [[Image:Mattione_Update_05072012_SlowPiPlus_NumCandidates.gif|thumb|left|350px|Track Candidates]] | | [[Image:Mattione_Update_05072012_SlowPiPlus_NumCandidates.gif|thumb|left|350px|Track Candidates]] | ||
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Revision as of 02:05, 7 May 2012
Track Candidate Reconstruction Sampling
- All events have one π+ thrown at p = 150 MeV/c, θ = 90 degrees, φ = random.
- These are identical to those presented at the 04/25/2012 Tracking Software meeting.
| Event # | Hits (CDC & Truth) | Current (04/08/12) Code Track Candidates | Spiral Code Track Candidates |
|---|---|---|---|
| Event 1 |  |
 |
 |
| Event 2 |  |
 |
 |
| Event 3 |  |
 |
 |
| Event 294 |  |
 |
 |
Spiral Fitting - Histograms
- Improvements from last time (04/25/2012):
- Changed track candidate algorithm structure (removes memory explosion & slow reconstruction): Yielded ~10% fewer events with no track candidates.
- Switched to new Kalman Filter code (includes fix for broken tracks):
- Truncated track stepping once track turns back inwards towards the target (Δr < 0.0): Yielded X% fewer events with no time-based tracks.
- # Reconstructed Tracks / Event:
- NOTE: Hit selectors disabled for wire based & time based fits, except for "SVN Code": instead use hits from track candidates (and ignore hits after spiral turn back inwards)
