Status of the U.S. Dark Matter Axion Search

We describe the status of a sensitive search for halo axions with masses in the μeV range. A tunable large-volume and loW--loss microwave cavity is operated at low temperature in a strong magnetic field. Resonant Primakoff conversion of axions into photons takes place when the cavity frequency is matched to the axion mass. No positive signal has been found so far, and we are able to exclude hadronic axions as the dominant halo component over a significant axion mass range. Future plans for a detector upgrade are outlined