Difference between revisions of "Mattione Update 08212013"
From GlueXWiki
(→Performance) |
(→Multiplicity) |
||
Line 30: | Line 30: | ||
* # Time-Based Tracks (with PID = π<sup>+</sup>) with Hit Selector DISABLED | * # Time-Based Tracks (with PID = π<sup>+</sup>) with Hit Selector DISABLED | ||
+ | ** Hit Selector: | ||
+ | *** Runs just prior wire-based & time-based tracking. | ||
+ | *** Re-selects which hits to use for track fitting. | ||
+ | *** In theory this improves things, because with better guesses for the track momentum and position, you should be able to better select the hits along that trajectory. | ||
+ | *** In practice, this can pick up many extra, unwanted hits for spiraling tracks | ||
{| class="wikitable" | {| class="wikitable" | ||
| [[Image:Mattione_Update_08202013_NumTimeBased_Current_NoSelector.png|thumb|left|500px|Current (08/20/13) Code, No Hit Selector]] | | [[Image:Mattione_Update_08202013_NumTimeBased_Current_NoSelector.png|thumb|left|500px|Current (08/20/13) Code, No Hit Selector]] |
Revision as of 23:41, 20 August 2013
Track Candidate Reconstruction Sampling
- All events have one π+ thrown at p = 150 MeV/c, θ = 90 degrees, φ = random.
Event # | Truth Hits | Reconstructed Hits | Current (08/20/13) Code Track Candidates | Spiral Code Track Candidates |
---|---|---|---|---|
Event 1 |
Performance
- 1000 events, all with one π+ thrown at p = 150 MeV/c, θ = 90 degrees, φ = random.
Multiplicity
- # Track Candidates
- # Time-Based Tracks (with PID = π+)
- # Time-Based Tracks (with PID = π+) with Hit Selector DISABLED
- Hit Selector:
- Runs just prior wire-based & time-based tracking.
- Re-selects which hits to use for track fitting.
- In theory this improves things, because with better guesses for the track momentum and position, you should be able to better select the hits along that trajectory.
- In practice, this can pick up many extra, unwanted hits for spiraling tracks
- Hit Selector:
- Average Event Reconstruction Rate:
- Current (08/20/13) Code: 7.5Hz
- Spiral Code: 17.5Hz
Accuracy
- % of events with at least one track that is "roughly close" to the thrown parameters:
- "Roughly Close": p within 20%, θ within 15 degrees, φ within 30 degrees, Vertex-Z within 10cm
Stage | Current (08/20/13) Code | Spiral Code | Current (08/20/13) Code, No Hit Selector | Spiral Code, No Hit Selector |
---|---|---|---|---|
Track Candidates | % | % | % | % |
Time-Based Tracks | % | % | % | % |