Track by track analysis, compare calibration production SL21b, production SL21c, and TFG21j for 2019AuAu19GeV, day 057.
Legend
The plots are designed to answer on the following questions:
- What is difference between efficiencies for "new" and "old" reconstruction for both global and primary tracks versus kinematical variables ?
- What globals and primaries track relative reconstruction efficiency of "new" production with respect to "old" one?
- What is the track parameters and their errors dependence on the track kinematics (φ, η, 1/pT) ?
- What is difference in the primary vertex positions?
- Filled marker for "new" production, opened marker for "old" one.
- Black marker for positive tracks, red markers for negative tracks.
- The efficiency is calculated for the matched tracks i.e. tracks have one to one match or if there is a multiple match than it is taken the first matched pair only.
- The clones are tracks with more than 1 matched track.
- The lost track are ones without match.
The conclusions:
- Practically no difference in the global track reconstruction efficiencies between SL21b and SL21c, and significant difference between SL21c and TFG21j (≈ 4%) due to new CA (Fig. 1-3),
especially for high η and low pT.
- The same is true for primary tracks (Fig. 10-12).
- There is no difference in momentum (pT) between SL21b and SL21c, but there is ≈ 0.2% shift in momentum between SL21c and TFG21j due to rescaling of magnetic field (Fig. 27 and 29).
- There is a difference in the primary vertex Z-position between SL21b and SL21c ≈ 500 μm (Fig. 33) due to different model for the trigger time offset calculations.
1. Tracks
Track by track analysis
Track by track analysis
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Fig.1 |  |
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Fig.2 |  |
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Fig.3 |  |
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Fig.4 |  |
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Fig.5 |  |
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Fig.6 |  |
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Fig.7 |  |
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Fig.8 |  |
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Fig.9 |  |
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Fig.10 |  |
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Fig.11 |  |
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Fig.12 |  |
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Fig.13 |  |
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Fig.14 |  |
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Fig.15 |  |
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Fig.16 |  |
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Fig.17 |  |
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Fig.18 |  |
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Fig.19 |  |
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Fig.20 |  |
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Fig.21 |  |
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Fig.22 |  |
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Fig.23 |  |
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Fig.24 |  |
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Fig.25 |  |
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Fig.26 |  |
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Fig.27 |  |
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Fig.28 |  |
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Fig.29 |  |
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Fig.30 |  |
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Fig.31 |  |
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Fig.32 |  |
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Fig.33 |  |
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Fig.34 |  |
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Fig.35 |  |
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Fig.36 |  |
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Fig.37 |  |
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Fig.38 |  |
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Fig.39 |  |