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Use of GEANT4 in CMS

Arce Pedro1, Banerjee Sunanda2, Giani Simone3, Gokieli Ryszard3, González Isidro1, Klem Jukka4, Kossov Mikhail5, Lefébure Véronique3, Nikitenko Alexandre4, Pimiä Martti3, Schröder Matthias3, Wellisch Johannes-Peter3, Wynhoff Stephan3
  1. Instituto de Fisica de Cantabria
  2. Tata Institute of Fundamental Research
  3. CERN
  4. Helsinki Institute of Physics
  5. Institute for Theoretical and Experimental Physics, Moscow

Speaker: Matthias Schröder

  The CMS experiment has decided to use the GEANT4 toolkit for the detector simulation. We will show how we will do the transition from the GEANT3.21 based simulation to the GEANT4 based simulation.
  We will describe the design of the CMS geometry and hit classes and the status of the implementation. We will also report on the experience made with GEANT4 navigation and tracking using that geometry description.
  We have also implemented the geometry of some test-beam setups, and plan to do a detailed comparison of the GEANT4 simulation results with the data taken in those test beam. Some results of the simulation will be shown.
  We have also started to compare the results of the simulation of the CMS ECAL crystals in GEANT4 and GEANT3.21.

Presentation:  PowerPoint Short Paper:  Adobe Acrobat pdf 

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