Difference: FTKPublicResults (21 vs. 22)

Revision 222019-04-25 - DavidMStrom

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META TOPICPARENT name="TriggerPublicResults"
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 Distribution of track transverse momentum (pT) from an FTK slice. A single Data Formatter (DF) board provides partial coverage of Tower22, which spans -1.5 < η < 0 and 1.6 < φ < 2.0. The plot covers a subset of 380,000 events from Run 364485, a special high pile-up run with
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average interactions per crossing ρ = 82, collected in October 2018. FTK tracks with Insertable B-layer (IBL) hits were excluded, due to a
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average interactions per crossing μ = 82, collected in October 2018. FTK tracks with Insertable B-layer (IBL) hits were excluded, due to a
 FTK module ordering problem that caused incorrect hit positions in the run. The cause is understood and the fix is being implemented. FTK tracks are matched to offline tracks within Δ R < 0.02. The last bin contains the overflow.
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The distribution of FTK track pseudo-rapidity (η) vs. azimuthal angle ( φ) from an FTK slice. A single Data Formatter (DF) board provides partial coverage of Tower22, which spans -1.5 < η < 0 and 1.6 < φ < 2.0. The plot covers a subset of 380,000 events from Run 364485, a special high pile-up run with average interactions per crossing μ = 82, collected in October 2018. FTK tracks with Insertable B-layer (IBL) hits were excluded, due to a FTK module ordering problem that caused incorrect hit positions in the run. The cause is understood and the fix is being implemented. FTK tracks are matched to offline tracks within Δ R < 0.02.
 
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Number of tracks produced per event from an FTK slice. A single Data Formatter (DF) board provides partial coverage of Tower22, which spans -1.5 < η < 0 and 1.6 < φ < 2.0. The plot covers a subset of 380,000 events from Run 364485, a special high pile-up run with average interactions per crossing μ = 82, collected in October 2018. FTK tracks with Insertable B-layer (IBL) hits were excluded, due to a FTK module ordering problem that caused incorrect hit positions in the run. The cause is understood and the fix is being implemented. FTK tracks are matched to offline tracks within Δ R < 0.02. The last bin contains the overflow.


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The expected FTK tracking efficiency with respect to MC truth from functional emulation of the full FTK system using FTKSim, vs. the x position of the luminous centroid of the beamspot. A fully simulated sample of muons with longitudinal impact parameter |z0| < 110 cm and pseudo-rapidity |η| &\lt; 2.5 is used. The efficiency when treating FTK sectors as patterns (black points) is compared to the efficiency for the nominal patterns (red points) and the efficiencies after the first (green points) and second (blue points) tracking stages. The nominal beamspot used for training the sectors and constants and patterns has x = -0.5 mm and y = -0.9 mm.


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The expected FTK tracking efficiency with respect to MC truth from functional emulation of the full FTK system using FTKSim, vs. the x position of the luminous centroid of the beamspot. A fully simulated sample of muons with longitudinal impact parameter |z0| < 110 cm and pseudo-rapidity |η| < 2.5 is used. The colored dots represent patterns trained with the quoted beamspot x position.


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The expected FTK tracking efficiency with respect to MC truth from functional emulation of the full FTK system using FTKSim, vs. track transverse momentum pT and the transverse impact parameter d0. A specialized pattern bank is used, in which 30% of the patterns are dedicated to high momentum tracks with large d0. A fully simulated sample of muons with longitudinal impact parameter |z0| < 110 cm and pseudo-rapidity |η| < 2.5 is used.


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The resolution of the FTK track curvature, from functional emulation of FTK using FTKSim (FTK Full Simulation) and a parameterized uncertainty model (FTK Fast Simulation). The difference between the FTK reconstructed and true values of track charge divided by twice the track transverse momentum (&Deltaa; Q/2pT) is plotted. A fully simulated sample of muons with longitudinal impact parameter |z0| < 110 cm and pseudo-rapidity |η| < 2.5 is used. The resolution for the fast simulation is modeled as a double gaussian derived from full simulation.


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FTK vs. offline track transverse momentum (pT) residuals from an FTK slice. The difference between the FTK and matched offline track pT are shown for (black dots) the FTK slice, (shaded red histogram) functional emulation of the FTK slice using FTKSim, and (dashed line) FTK refit. A single Data Formatter (DF) board provides partial coverage of Tower22, which spans -1.5 < η < 0 and 1.6 < φ < 2.0. The plot covers a subset of 380,000 events from Run 364485, a special high pile-up run with average interactions per crossing μ = 82, collected in October 2018. FTK tracks with Insertable B-layer (IBL) hits were excluded, due to a FTK module ordering problem that caused incorrect hit positions in the run. The cause is understood and the fix is being implemented. FTK tracks are matched to offline tracks within Δ R < 0.02.


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