I will present recent results from and future plans of the Axion Dark Matter eXperiment (ADMX). Recent results include a first pass axion search of the 800-1020 MHz frequency range at half DFSZ sensitivity for 100% axion dark matter density, the demonstration of a traveling wave parametric amplifier (TWPA) for higher-frequency wide-band operation, and a multi-mode candidate identification...
Originally proposed as a solution to the strong CP problem, the axion is also well motivated as a candidate for dark matter. In the less-explored axion mass range below 1 ueV axions behave as long-wavelength dark matter, the search for which requires novel approaches and techniques. With ABRACADABRA-10cm we demonstrate the ability to search for GUT-scale axions in the range of 0.3 to 8 neV...
I present Dark Matter Radio (DMRadio), a multi-faceted program to probe axion dark matter below 1 ueV using an electromagnetic lumped-element resonator. I describe the detection concept and design principles and discuss present experimental status. DMRadio-50L, under construction, will probe axion-like particles in the 20 peV-20 neV mass range. It will serve as a testbed for sensors evading...
