The Semi-Conductor Tracker (SCT) is after the pixel detector the second innermost sub-detector of the ATLAS experiment. It is a silicon strip detector consisting of 4088 silicon modules arranged to form 4 Barrels and 18 Disks (9 each end). Each (barrel) module hosts a sensor with 1536 strips / channels each. This adds up to a total number of about 6.2 million readout channels.
More information can be found e.g. on
Our group is involved in the strip detector upgrade program, both in hardware and simulation, as well as monitoring the current detector.