Status of the silicon strip detector at CMS

The CMS Tracker is the world's largest silicon detector. It has only recently been moved underground and installed in the 4 T solenoid. Prior to this there has been an intensive testing on the surface, which confirms that the detector system fully meets the design specifications. Irradiation studies with the sensor material shows that the system will survive for at least 10 years in the harsh radiation environment prevailing within the Tracker volume. The planning phase for SLHC as the successor of LHC, with a 10 times higher luminosity at the same energy has already begun. First R and D studies for more robust detector materials and a new Tracker layout have started.