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— 3 barrels+1disk — 3 barrels+2disks — 3 barrels+3disks

Track Reconstruction with the CMS Tracking Detector Jean-Roch VLIMANT, UCSB For the CMS collaboration. CMS tracking system All silicon. 13-16 layers crossed inside-out Pixels and strips and stereo strips 40% of 3D measurement points Alignment at 5  m to 20  m uncertainty

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— 3 barrels+1disk — 3 barrels+2disks — 3 barrels+3disks

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  1. Track Reconstruction with the CMS Tracking Detector Jean-Roch VLIMANT, UCSB For the CMS collaboration • CMS tracking system • All silicon. 13-16 layers crossed inside-out • Pixels and strips and stereo strips • 40% of 3D measurement points • Alignment at 5 m to 20 m uncertainty • Single point resolution from 8 m to 64 m • Few but precise measurement points — 3 barrels+1disk — 3 barrels+2disks — 3 barrels+3disks • CMS tracking performance • Pixels for fast track/vertex reconstruction (online) and very efficient trajectory seeding (offline)‏ • Strips for efficient pattern recognition • Momentum resolution at the percent level • Dedicated track reconstruction algorithms • Tracker and muon system combined

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