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LHCbMapping the VELO Detector
By Abraham JacobSupervisors: Tom Latham and Tim Gershon
Introduction
The Vertex Locator (VELO)
Monte Carlo (MC) and Real Data
Monte Carlo algorithms can produce simulated data Can “reconstruct” the vertex in same way as real dataAlso MC truth data where vertex locations are knownWant to compare the simulated data to real data to make
sure simulation algorithms are as good as possible
Unfortunately not this Monte Carlo.
Mapping ATLAS detector
Images from ATLAS collaboration presented at ICHEP, Paris, July 22nd 2010.
MC Truth Data
z (mm)
x (mm)
MC data
Real Dataz (mm)
x (mm)
z (mm)
x (mm)
MC data
Real Data
MC Truth Data
Hadronic interactions in ATLAS
Images from ATLAS collaboration presented at ICHEP, Paris, July 22nd 2010.
Vertices with at least 3 output tracks
Radius against Z axis
Error in z position in mm