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MUON RECONSTRUCTION IN ATLAS Borghild Opdahl

MUON RECONSTRUCTION IN ATLAS Borghild Opdahl. Muon Spectrometer; Cosmic ray data taken Tracking; MDT & RPC in 2008 and 2009 Trigger; TGC & CSC. Dataflow. Reconstruction Algorithm. Standalone Combined STACO MUID Tagged Difficulties: Inhomogeneous magnetic field

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MUON RECONSTRUCTION IN ATLAS Borghild Opdahl

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  1. MUON RECONSTRUCTION IN ATLASBorghild Opdahl • Muon Spectrometer; Cosmic ray data taken • Tracking; MDT & RPC in 2008 and 2009 • Trigger; TGC & CSC Muon track reconstruction -Borghild Opdahl

  2. Dataflow Muon track reconstruction -Borghild Opdahl

  3. Reconstruction Algorithm • Standalone • Combined • STACO • MUID • Tagged Difficulties: • Inhomogeneous magnetic field • Varying temperatures • Background noise • Modified for cosmic Muon track reconstruction -Borghild Opdahl

  4. Cutflow Muon track reconstruction -Borghild Opdahl

  5. Parameters Muon track reconstruction -Borghild Opdahl

  6. Energy loss in the calorimeter • Approximately 3 GeV energy loss in the calorimeter Muon track reconstruction -Borghild Opdahl

  7. Control plots Muon track reconstruction -Borghild Opdahl

  8. Conclusion • Cosmic rays are useful for alignment of the detector and testing the reconstruction chain. • Our code has studied some properties of the reconstructed muon tracks. I would like to thank my supervisor Nectarios Benekos for all the support. Muon track reconstruction -Borghild Opdahl

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