D0 is a multipurpose detector with a silicon vertex detector, central fiber tracker, liquid Argon and Uranium calorimeter, and a muon tracking system with large acceptance. Our group has contributed to the construction, installation and commissioning of the muon system and the calorimeter trigger. The D0 detector runs well, typically recording the interesting events delivered by the Tevatron with 90% efficiency. Our group works on analyses within the B-physics, Higgs and QCD working groups.