SCT Analyses on Cosmics. Efficiency 2 methods –Online- quick/biased -> located in SCT_Monitoring –Offline- slow/unbiased In agreement with each other.

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Presentation transcript:

SCT Analyses on Cosmics

Efficiency 2 methods –Online- quick/biased -> located in SCT_Monitoring –Offline- slow/unbiased In agreement with each other - ~80% of modules with >99% efficiency- ~ 10-20% of modules with very low efficiency (the fraction changes among layers) --> Under investigation

SCT_Monitoring

Layer 1 Layer 0 Layer 2 Layer 3 Offline: unbiased

HitMaps of when one hit is found but two are expected. Layer 1 Layer 0 Layer 2Layer 3

Comparison of two methods.

Noise Excluding noisy modules and just looking at layer 2, side = 1: noise = Plotting number of noise hits found per module (over flow = 10): ( Running over 7642 events) #hits per module

Layer 1 Layer 0 Layer 2 Layer 3 Noise: Maps

Noisy Modules: LAYER=0 PHI= 8 ETA=-4 SIDE=0 (full module) LAYER=0 PHI= 8 ETA=-4 SIDE=1 (full module) LAYER=0 PHI= 7 ETA= 2 SIDE=0 (Just 1 chip: channels from 640 to 767) LAYER=0 PHI= 7 ETA= 2 SIDE=1 (Just few channels) LAYER=1 PHI= 9 ETA=-4 SIDE=1 (Just channel 599) LAYER=2 PHI= 6 ETA=-2 SIDE=0 (Just channels: 599 and 623) LAYER=3 PHI= 9 ETA=-4 SIDE=0 (full module) LAYER=3 PHI= 9 ETA=-4 SIDE=1 (full module)

DAQ errors For run 2586 (condensed mode, any hit) a large fraction of hits report first and second hit errors in the following modules: –LAYER=0 PHI= 6 ETA= 2 –LAYER=0 PHI= 7 ETA=-4 (a noisy module) –LAYER=1 PHI= 6 ETA= 1 –LAYER=1 PHI= 8 ETA=-4 (a noisy module) –LAYER=2 PHI= 4 ETA=-2 (a noisy module) –LAYER=2 PHI= 7 ETA=-4 --> Consistent with what was seen by the DAQ No errors have been detected in other runs.

Residuals: Summary Table Data MC LayerSideMeanRMSMeanRMS e e e e e e e e

Summary residual plots for data. The red line shoes the fit for MC for comparison

Residuals: Detail

Common Noise Coming from Eva

ClusterSize Discrepancy found in test beam

ClusterSize: run 2267 vs. MC