The silicon pixel detector is the innermost component of the CMS tracking system. Based on the precise measurement of up to three unambiguous space points, it allows an effective pattern recognition even in the high track density environment of LHC collisions. In this contribution, we present the performance of the CMS pixel detector during the first LHC run. In particular, we present the hit efficiency, position resolution, and data-losses caused by the large LHC instantaneous luminosities.

more »

... tract-The silicon pixel detector is the innermost component of the CMS tracking system. Based on the precise measurement of up to three unambiguous space points, it allows an effective pattern recognition even in the high track density environment of LHC collisions. In this contribution, we present the performance of the CMS pixel detector during the first LHC run. In particular, we present the hit efficiency, position resolution, and data-losses caused by the large LHC instantaneous luminosities. Index Terms-CMS, pixel detector.