The Inner Detector commissioning and performance plots below are approved to be shown by ATLAS speakers at conferences and similar events.
Please do not add figures on your own. Contact the ID project leader in case of questions and/or suggestions.
Detector alignment 

Residual distribution in x, integrated over all hitsontracks in the pixel barrel for the nominal geometry and the preliminary aligned geometry. The residual is defined as the measured hit position minus the expected hit position from the track extrapolation. Shown is the projection onto the local x coordinate, which is the precision coordinate. Tracks are selected to have pT > 2 GeV, d0<50mm, z0<400mm (in other words they are required to go through the pixel L0). The distribution is shown for 5 cosmic runs: 91885, 91888, 91890, 91891, 91900, all have solenoid on  corresponding to ~25% of all the solenoidon data taken in Sep/Oct 2008. New Tracking is used (in 14.5.2.1). A double Gaus fit is performed but only the mean and sigma of the narrower Gaussian are shown. 
Approved_PixBarResX.eps 

Residual distribution in y, integrated over all hitsontracks in the pixel barrel for the nominal geometry and the preliminary aligned geometry. The residual is defined as the measured hit position minus the expected hit position from the track extrapolation. Shown is the projection onto the local y coordinate, which is the nonprecision coordinate. Tracks are selected to have pT > 2 GeV, d0<50mm, z0<400mm (in other words they are required to go through the pixel L0). The distribution is shown for 5 cosmic runs: 91885, 91888, 91890, 91891, 91900, all have solenoid on  corresponding to ~25% of all the solenoidon data taken in Sep/Oct 2008. New Tracking is used (in 14.5.2.1). A single Gaussian fit is performed. 
Approved_PixBarResY.eps 

Residual distribution in x, integrated over all hitsontracks in the SCT barrel for the nominal geometry and the preliminary aligned geometry. The residual is defined as the measured hit position minus the expected hit position from the track extrapolation. Shown is the projection onto the local x coordinate, which is the precision coordinate. Tracks are selected to have pT > 2 GeV, d0<50mm, z0<400mm (in other words they are required to go through the pixel L0). The distribution is shown for 5 cosmic runs: 91885, 91888, 91890, 91891, 91900, all have solenoid on  corresponding to ~25% of all the solenoidon data taken in Sep/Oct 2008. New Tracking is used (in 14.5.2.1). A single Gaussian fit is performed. 
Approved_SCTBarResX.eps 

TRT residual for combined tracks before and after TRT alignment. The alignment includes a global alignment with respect to the Pixel and SCT, as well as an internal module level alignment. Description: The plot show TRT residual distribution from cosmic data with the solenoid on (run 91900). Tracks are required to have pT >2 GeV, event phase between 5 and 30 ns, >= 45 TRT hits, >= 2 Pixel hits, >= 9 SCT hits, and no endcap hits. A single Gaussian fit to the core of the distribution (+/ 0.3 mm) is done, and the mean and sigma of the fit are reported. The distribution is made in athena release 15 (tag=15.0.0) and using ID alignment tags InDet_Cosmics_2008_03 and TRT_Cosmics_2008_06. 
TRTBarrelResidualCombinedTracks.eps  
Cosmic tracks crossing the entire ID leave hits in both the upper and lower halves of the ID. These tracks can be split near the interaction point and fit separately, resulting in two collisionlike tracks that can then be compared. The plots shows the difference in the d0 track parameter between the two split tracks. Tracks are selected to have pT > 2 GeV, d0<50mm, z0<400mm (in other words they are required to go through the pixel L0). Tracks also are required to have a hit in the Pixel B layer, 3 Pixel hits and in total 7 Silicon hits. The distribution is shown for 5 cosmic runs: 91885, 91888, 91890, 91891, 91900, all have solenoid on  corresponding to ~25% of all the solenoidon data taken in Sep/Oct 2008. New Tracking is used (in 14.5.2.1). A single Gaussian fit is performed. 
Approved_DeltaD0.eps 

Cosmic tracks crossing the entire ID leave hits in both the upper and lower halves of the ID. These tracks can be split near the interaction point and fit separately, resulting in two collisionlike tracks that can then be compared. The plots shows the difference in the z0 track parameter between the two split tracks. Tracks are selected to have pT > 2 GeV, d0<50mm, z0<400mm (in other words they are required to go through the pixel L0). Tracks also are required to have a hit in the Pixel B layer, 3 Pixel hits and in total 7 Silicon hits. The distribution is shown for 5 cosmic runs: 91885, 91888, 91890, 91891, 91900, all have solenoid on  corresponding to ~25% of all the solenoidon data taken in Sep/Oct 2008. New Tracking is used (in 14.5.2.1). A single Gaussian fit is performed. 
Approved_DeltaZ0.eps 

Cosmic tracks crossing the entire ID leave hits in both the upper and lower halves of the ID. These tracks can be split near the interaction point and fit separately, resulting in two collisionlike tracks that can then be compared. The plots shows the difference in the Q/pT track parameter between the two split tracks. Tracks are selected to have pT > 2 GeV, d0<50mm, z0<400mm (in other words they are required to go through the pixel L0). Tracks also are required to have a hit in the Pixel B layer, 3 Pixel hits and in total 7 Silicon hits. The distribution is shown for 5 cosmic runs: 91885, 91888, 91890, 91891, 91900, all have solenoid on  corresponding to ~25% of all the solenoidon data taken in Sep/Oct 2008. New Tracking is used (in 14.5.2.1). A single Gaus fit is performed. 
Approved_DeltaQoPT.eps 

Cosmic tracks crossing the entire ID leave hits in both the upper and lower halves of the ID. These tracks can be split near the interaction point and fit separately, resulting in two collisionlike tracks that can then be compared. The plots shows the difference in the phi track parameter between the two split tracks. Tracks are selected to have pT > 2 GeV, d0<50mm, z0<400mm (in other words they are required to go through the pixel L0). Tracks also are required to have a hit in the Pixel B layer, 3 Pixel hits and in total 7 Silicon hits. The distribution is shown for 5 cosmic runs: 91885, 91888, 91890, 91891, 91900, all have solenoid on  corresponding to ~25% of all the solenoidon data taken in Sep/Oct 2008. New Tracking is used (in 14.5.2.1). A double Gaussian fit is performed but only the mean and sigma of the narrower Gaus are shown. 
Approved_DeltaPhi.eps 

Distributions from cosmic ray tracks 

Warning: Cosmic ray spectra including comparisons with MC which appeared before on this page are not approved for external use at this stage. The MC does not model some details of the special cosmic trigger configuration and timing. It includes the two main access shafts, but not the two lift shafts. Until these effects are taken into account, the MCdata comparison is not useful. Cosmic muons crossing the entire ATLAS detector leave hits in the Inner Detector (ID) and so tracks can be reconstructed. Two different tracking algorithms are in use for the reconstruction: the CTB (Cosmics and Test Beam) tracking and the New Tracking. The results below show the performance of the CTB. Tracks are characterized by 5 parameters. These are defined in a reference point, the perigee, which is the point of closest approach to the z/beam axis. d0 is the signed distance to the zaxis, z0 is the zcoordinate of the perigee, phi0 is the angle in the xy plane at the perigee, theta0 is the angle with the zaxis and q/p is the charge of the cosmic muon divided by its momentum. In the next plots, the parameters of these cosmic muon tracks (reconstructed with CTB tracking and release 14.5.0.5, AtlasProduction) from the ATLAS combined cosmic run 91890 (Autumn 2008) are shown. Both toroid and solenoid were on during this run. For the theta0 and z0 distributions, tracks are required to have Silicon hits (since these parameters are not measured by the TRT barrel).  
Cosmic spectra (d0 distribution) as seen in run 91890. 
eps figure 

Cosmic spectra (z0 distribution) as seen in run 91890. 
eps figure 

Cosmic spectra (phi0 distribution) as seen in run 91890. 
eps figure 

Cosmic spectra (theta0 distribution) as seen in run 91890. 
eps figure 

Cosmic spectra (QoverP distribution) as seen in run 91890. 
eps figure 

Cosmic ray track statistics 

Collected track statistics in autumn 2008:

pdf figure 

Event displays 

Inner detector event display for event 757427 of the cosmic run 90270 with field ON.  
Inner detector event display for event 62340 of the cosmic run 90731 (no Solenoid). Showing hits on track for both TRT endcaps, as well as SCT and pixel barrel and endcap hits.  
Comparison of NewTracking and CTBTracking 

Comparison of NewTracking versus CTB Tracking for real data from the IDCosmic stream of run 91885 (field ON) reconstructed in the first reprocessing in December 2008.
The following cuts have ben applied:
 
Distribution of pt for NewTracking and CTB Tracking. 
eps figure 

Distribution of q/p for NewTracking and CTB Tracking. 
eps figure 

Number of Hits (nPixel+nSCT+nTRT) on the track. 
eps figure 

Distribution of d0 for NewTracking and CTB Tracking. 
eps figure 

Distribution of phi0 for NewTracking and CTB Tracking. 
eps figure 

Distribution of z0 for NewTracking and CTB Tracking. 
eps figure 

Distribution of η for NewTracking and CTB Tracking.
The doublepeak structure at
η ≈ 0.4 und η ≈ 0.3 is due to the construction shafts through which the ATLAS detector was lowered into the cavern.

eps figure 

Figure description ...  figure  
ID track parameter resolutions 

Cosmics muons traverse the whole Inner Detector and thus leave hits in the upper and lower parts of the detector. By dividing the track to its upper and lower half according to the value of the y coordinate of hits on track and refitting both hit collections, two collisionlike tracks originating from the same cosmic muon are obtained. Track parameter resolutions are studied by comparing the difference (residual) of the track parameters at the perigee point. Since both tracks have an associated error, the quoted resolution is the RMS of the residual distribution of the particular track parameter divided by square root 2. The track parameter resolutions are studied dependant on variables like the pT or the d0 of the tracks. Shifted mean values of the residual distributions can be a sign of systematic detector deformations. The following distributions show data from runs 91885,91888,91890,91891 and 91900 taken in 2008. The tracks have been refitted using Athena release 15.0.0.7 (Tier0).
The following cuts have ben applied per track (if not stated otherwise):
Additionally only events with an event phase between 5 and 30 ns are accepted to ensure proper timing of the subdetectors. The plots show comparisons of tracks using the full Inner Detector (silicon and TRT detectors, closed triangles), only the silicon subdetecors (open triangles) together with tracks from cosmic simulation using the full Inner Detector (stars). The requirement of at least 25 TRT hits is dropped for silicon only tracks. However, the cut on the event phase is retained to ensure proper timing and the comparability of the analyzed sets of tracks. There is no cut on the event phase for simulation events since the jitter in cosmic trigger timing is not simulated.  
Transverse impact parameter resolution as a function of pT. In the low pT region, the resolution is dominated by multiple scattering effects. At higher values, the resolution is flat. Taking into account the TRT information improves the resolution. The difference to the MC curve indicates the remaining mislaignment. 
eps figure 

Transverse impact parameter resolution as a function of d0 itself. For this plot the d0 cut is released to 120 mm and the minum number of Pixel hits is set to one. In general the resolution for full ID tracks is better. The resolution is better in the central d0 region due to more Pixel layers crossed and less spread clusters in the Pixel detector. Dips are seen if the d0 of the tracks equal the radii of the pixel layers (indicated by dashed lines). Since the d0 is in these cases very close to a hit on a Pixel layer, the extrapolation to the perigee point is very small and the resolution improves. The MC distributions confirms the observed behaviour. 
eps figure 

Mean of the transverse impact parameter distribution as a function of pT. The expected value of the mean is 0 as confirmed by the MC distribution. In data a shift is seen for full ID and silicon only tracks. The shift increases with higher pT. 
eps figure 

Mean of the transverse impact parameter distribution as a function of d0 itself. For this plot the d0 cut is released to 120 mm and the minum number of Pixel hits is set to one. The expected value of the mean is 0 as confirmed by the MC distribution. In data a shift is seen for full ID and silicon only tracks. The shift is biggest in the central d0 region. 
eps figure 

Relative momentum resolution as a function of pT. The relative momentum resolution increases with higher pT due to stiffer tracks and a more difficult measurement of the sagitta. Including information from the TRT extends the lever arm and helps improving the resolution especially at high pT values. The difference to the MC curve indicates the remaining misalignment. 
eps figure 

Mean of the relative momentum distribution as a function of pT. The expected value of the mean is 0 as confirmed by the MC distribution. In data a shift is seen for full ID and silicon only tracks. The shift increases with higher pT. 
eps figure 

Resolution of the azimuthal angle as a function of pT. In the low pT region, the resolution is dominated by multiple scattering effects. At higher values, the resolution is flat. Taking into account the TRT information improves the resolution. The difference to the MC curve indicates the remaining mislaignment. 
eps figure 

Resolution of the polar angle as a function of eta. The resolution of the polar angle theta improves at larger eta due to broader pixel clusters that allow a more precise position measurement. Since the TRT effectively does not measure the z coordinate in the barrel region, the resolutions are equal for silicon only and full ID tracks. The difference to the MC curve indicates the remaining misalignment. 
eps figure 
I  Attachment  History  Action  Size  Date  Who  Comment 

png  PixResX_NewT_D0Z0cut_Mat_vsNominal.png  r2 r1  manage  33.4 K  20081211  19:11  TobiasGolling  Pixel x residuals 
png  PixResY_NewT_D0Z0cut.png  r2 r1  manage  40.6 K  20081211  19:12  TobiasGolling  Pixel y residuals 
png  SCTResX_NewT_D0Z0cut.png  r2 r1  manage  31.8 K  20081211  19:13  TobiasGolling  SCT x residuals 
gif  IDCosmic08_statistics.gif  r1  manage  60.4 K  20090213  09:33  ChristianSchmitt  
IDCosmic08_statistics.pdf  r1  manage  18.0 K  20090213  09:33  ChristianSchmitt  
eps  Approved_DeltaD0.eps  r1  manage  32.0 K  20090305  14:19  TobiasGolling  Delta D0 from cosmic tracks broken down in 2 legs 
png  Approved_DeltaD0.png  r1  manage  30.6 K  20090305  14:19  TobiasGolling  Delta D0 from cosmic tracks broken down in 2 legs 
eps  Approved_DeltaPhi.eps  r1  manage  49.1 K  20090305  14:20  TobiasGolling  Delta Phi from cosmic tracks broken down in 2 legs 
png  Approved_DeltaPhi.png  r1  manage  31.4 K  20090305  14:21  TobiasGolling  Delta Phi from cosmic tracks broken down in 2 legs 
eps  Approved_DeltaQoPT.eps  r1  manage  17.6 K  20090305  14:21  TobiasGolling  Delta QopT from cosmic tracks broken down in 2 legs 
png  Approved_DeltaQoPT.png  r1  manage  29.8 K  20090305  14:21  TobiasGolling  Delta QopT from cosmic tracks broken down in 2 legs 
eps  Approved_DeltaZ0.eps  r1  manage  26.0 K  20090305  14:21  TobiasGolling  Delta Z0 from cosmic tracks broken down in 2 legs 
png  Approved_DeltaZ0.png  r1  manage  32.7 K  20090305  14:22  TobiasGolling  Delta Z0 from cosmic tracks broken down in 2 legs 
eps  Approved_PixBarResX.eps  r1  manage  28.5 K  20090305  14:22  TobiasGolling  Pixel x residuals 
png  Approved_PixBarResX.png  r1  manage  32.8 K  20090305  14:23  TobiasGolling  Pixel x residuals 
eps  Approved_PixBarResY.eps  r1  manage  38.8 K  20090305  14:23  TobiasGolling  Pixel y residuals 
png  Approved_PixBarResY.png  r1  manage  39.7 K  20090305  14:23  TobiasGolling  Pixel y residuals 
eps  Approved_SCTBarResX.eps  r1  manage  27.5 K  20090305  14:24  TobiasGolling  SCT x residuals 
png  Approved_SCTBarResX.png  r1  manage  31.5 K  20090305  14:24  TobiasGolling  SCT x residuals 
gif  Atlas_ID_Loops_ON_cy_2008.gif  r1  manage  20.9 K  20090309  14:19  SaverioDAuria  Number of ID Cooling Loops ON as a function of time 
eps  trackpar_QoverP.eps  r1  manage  12.9 K  20090309  14:16  PippaWells  
png  trackpar_QoverP.png  r1  manage  8.1 K  20090309  14:15  PippaWells  
eps  trackpar_d0.eps  r1  manage  11.3 K  20090309  14:18  PippaWells  
png  trackpar_d0.png  r1  manage  7.8 K  20090309  14:18  PippaWells  
eps  trackpar_eta.eps  r1  manage  9.5 K  20090309  14:17  PippaWells  
png  trackpar_eta.png  r1  manage  6.1 K  20090309  14:17  PippaWells  
eps  trackpar_phi0.eps  r1  manage  12.5 K  20090309  14:17  PippaWells  
png  trackpar_phi0.png  r1  manage  8.3 K  20090309  14:17  PippaWells  
eps  trackpar_theta0.eps  r1  manage  10.4 K  20090309  14:15  PippaWells  
png  trackpar_theta0.png  r1  manage  6.9 K  20090309  14:14  PippaWells  
eps  trackpar_z0.eps  r1  manage  12.3 K  20090309  14:14  PippaWells  
png  trackpar_z0.png  r1  manage  8.5 K  20090309  14:13  PippaWells  
eps  91885_IDCosmic_NewTVsCTB_RecD0.eps  r1  manage  14.6 K  20090320  18:26  ChristianSchmitt  
png  91885_IDCosmic_NewTVsCTB_RecD0.png  r1  manage  7.8 K  20090320  18:26  ChristianSchmitt  
eps  91885_IDCosmic_NewTVsCTB_RecEta.eps  r1  manage  13.4 K  20090320  18:25  ChristianSchmitt  
png  91885_IDCosmic_NewTVsCTB_RecEta.png  r1  manage  6.9 K  20090320  18:25  ChristianSchmitt  
eps  91885_IDCosmic_NewTVsCTB_RecPhi0.eps  r1  manage  13.9 K  20090320  18:25  ChristianSchmitt  
png  91885_IDCosmic_NewTVsCTB_RecPhi0.png  r1  manage  7.2 K  20090320  18:25  ChristianSchmitt  
eps  91885_IDCosmic_NewTVsCTB_RecPt.eps  r1  manage  16.0 K  20090320  18:25  ChristianSchmitt  
png  91885_IDCosmic_NewTVsCTB_RecPt.png  r1  manage  7.7 K  20090320  18:24  ChristianSchmitt  
eps  91885_IDCosmic_NewTVsCTB_RecQoverP.eps  r1  manage  11.2 K  20090320  18:24  ChristianSchmitt  
png  91885_IDCosmic_NewTVsCTB_RecQoverP.png  r1  manage  7.1 K  20090320  18:24  ChristianSchmitt  
eps  91885_IDCosmic_NewTVsCTB_RecZ0.eps  r1  manage  16.9 K  20090320  18:23  ChristianSchmitt  
png  91885_IDCosmic_NewTVsCTB_RecZ0.png  r1  manage  8.2 K  20090320  18:23  ChristianSchmitt  
eps  91885_IDCosmic_NewTVsCTB_nHits.eps  r1  manage  15.3 K  20090320  18:24  ChristianSchmitt  
png  91885_IDCosmic_NewTVsCTB_nHits.png  r1  manage  7.7 K  20090320  18:23  ChristianSchmitt  
eps  TRTBarrelResidualCombinedTracks.eps  r1  manage  43.3 K  20090414  14:49  ChristianSchmitt  
png  TRTBarrelResidualCombinedTracks.png  r1  manage  24.6 K  20090414  14:49  ChristianSchmitt  
eps  delta_QoverP_vs_pT.eps  r1  manage  10.2 K  20090616  15:30  ManuelKayl  
png  delta_QoverP_vs_pT.png  r1  manage  13.2 K  20090616  15:30  ManuelKayl  
eps  delta_d0_vs_d0.eps  r1  manage  15.4 K  20090616  15:14  ManuelKayl  
png  delta_d0_vs_d0.png  r1  manage  19.8 K  20090616  15:34  ManuelKayl  
eps  delta_d0_vs_pT.eps  r1  manage  11.8 K  20090616  15:13  ManuelKayl  
png  delta_d0_vs_pT.png  r1  manage  15.4 K  20090616  15:13  ManuelKayl  
eps  delta_phi0_vs_pT.eps  r1  manage  11.0 K  20090616  15:30  ManuelKayl  
png  delta_phi0_vs_pT.png  r1  manage  14.1 K  20090616  15:30  ManuelKayl  
eps  delta_theta_vs_eta.eps  r1  manage  11.3 K  20090616  15:31  ManuelKayl  
png  delta_theta_vs_eta.png  r1  manage  12.5 K  20090616  15:31  ManuelKayl  
eps  mean_delta_QoverP_vs_pT.eps  r2 r1  manage  11.3 K  20090616  15:46  ManuelKayl  
png  mean_delta_QoverP_vs_pT.png  r2 r1  manage  15.4 K  20090616  15:46  ManuelKayl  
eps  mean_delta_d0_vs_d0.eps  r1  manage  15.6 K  20090616  15:32  ManuelKayl  
png  mean_delta_d0_vs_d0.png  r1  manage  16.4 K  20090616  15:32  ManuelKayl  
eps  mean_delta_d0_vs_pT.eps  r1  manage  11.7 K  20090616  15:33  ManuelKayl  
png  mean_delta_d0_vs_pT.png  r1  manage  14.8 K  20090616  15:33  ManuelKayl 

