The Dط silicon micro-strip tracker

The Dط silicon micro-strip tracker (SMT) is part of the Dط upgrade for the Tevatron Run II at Fermilab. The detector has been running successfully since the start of the Run II physics data taking. The tracking and vertexing performance match the expectation from Monte-Carlo studies. An additional inner layer (Layer0) of silicon sensors at R = 1.6 cm will be installed in 2005.