The DØ silicon micro-strip tracker

The DØ  silicon micro-strip tracker (SMT) is part of the DØ  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=1.6cm will be installed in 2005.