Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

Operation and Performance of the CMS Silicon Tracker

Jul 6, 2012, 9:15 AM
Room 218 (Melbourne Convention and Exhibition Centre)

Room 218

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 13. Detectors and Computing for HEP Room 218 - Detectors and Computing for HEP - TR13


Dr Erik Butz (Massachusetts Inst. of Technology (US))


The CMS silicon tracker is the largest silicon detector ever built. It consists of a hybrid pixel detector with 66 million channels and a 200 m2 silicon strip detector with 10 million read out channels. The presentation describes the operation of this detector during the first three year of LHC both during proton-proton as well as heavy ion collisions. Results on the operational performance are presented including alignment, calibration, S/N, timing, etc. Reconstructed photon conversions and nuclear interactions are used to evaluate the material in the tracker. The resolution and efficiency of the track and vertex reconstruction are measured with data and compared to the results from simulation. With increasing integrated luminosity, monitoring of radiation-induced effects becomes more and more important. Our methods for measuring the evolution of full depletion voltage and leakage current will be presented and the results discussed.

Primary author

Dr Erik Butz (Massachusetts Inst. of Technology (US))

Presentation materials