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Detector Description

Detector Description. Requirements within experiment life time cycle Necessary capabilities Schematic view. Experiment life-time and Detector description requirements. Requirements are not fixed …depend on experiment life cycle Simple parameterization of ideal detector

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Detector Description

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  1. Detector Description Requirements within experiment life time cycle Necessary capabilities Schematic view M.Frank CERN/LHCb

  2. Experiment life-time and Detector description requirements • Requirements are not fixed • …depend on experiment life cycle • Simple parameterization ofideal detector • After TDR: Transition from parameterizeddetector to real description • Readout structure • Alignment constants • Calibration constants Detector opt. LCD is here CDR / LOI Detector opt. TDR Construction Operation M.Frank CERN/LHCb

  3. Basic assumptions and scope ofan experiment detector description • Geant 4 is the de-facto standard for the simulation of HEP experiments • A detector description can be designed, which serves • Geant 4 and • experiment specific applications as there are: • Reconstruction • Physics analysis of reconstructed data • Calibration and alignment applications M.Frank CERN/LHCb

  4. What must a detector description framework provide? • Detailed geometry description e.g. for simulation • Parameterized description for reconstruction • Readout structure (digitization + reconstruction) • Alignment constants Time • Calibration constants dependent • Visualization parameters (colors, wireframe, etc.) • … (not exhaustive) M.Frank CERN/LHCb

  5. Possible schematic view (example: LCD) create volumes / vis attrs detailed geo+ visualization attrs Database(Mokka) Generic G4Driver Geant4 SLIC There would be only one leftfor all subdetectors and all models getparams Geant4Visualization GeometryExpansion Detector Description Access according to needs Alignment const. -Reconstruction-Alignment-Analysis Processor(s) Calibration const. feeddetailed geometry Visualization attrs. Parametrized Geo. Detailed Geometry Event Display geometry+ visualization attrs M.Frank CERN/LHCb

  6. Current schema (example: LCD) Database(Mokka) get params create volumes / vis attrs MokkaDriver( VXD03 ) GDML Geant4 feed parameters for fast geo material budget Geometry(Gear) fast geo Reco (Marlin) M.Frank CERN/LHCb

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