Abstract
The Semi-Conductor Tracker (SCT) is a silicon strip detector and one of the key precision tracking devices in the Inner Detector (ID) of the ATLAS experiment at CERN LHC. SCT has been installed inside the ATLAS experimental cavern since 2007 and has been operational ever since.
Calibration data has been taken regularly and analysed to determine the performance of the system. The current results from the successful operation of the SCT detector and its status after three years of operation are presented.
We report on the operation of the detector including an overview of recent system updates, issues we encountered and the observation of significant increases in leakage currents (as expected) from bulk damage due to non-ionising radiation. The main emphasis is given to the tracking performance of the SCT and the data quality.
The running experience can be used to extract valuable lessons for future silicon strip detector projects.