Overview of the Axion Dark Matter Experiment (ADMX) - Status and Plans

Axions are a well-motivated dark matter candidate which interacts with strong magnetic fields to produce measurable photons. The Axion Dark Matter Experiment (ADMX) is the flagship DOE project to search for primordial dark matter axions in the few to tens of micro-eV mass range (or ~GHz frequencies for converted photons). It uses large frequency tunable microwave cavities in a strong static solenoid magnet to boost signals to levels detectable by superconducting quantum amplifiers. Here I will give a broad overview of the ADMX project through its various phases, including the currently operating "Gen2" project, and discuss the future system that will be based on multi-cavity in-phase amplitude combining in a new, more powerful, magnet.