DM Radio is a Stanford-SLAC-Berkeley-MIT-North Carolina-Princeton collaboration to search for dark matter axions in the 5-100 MHz (20-400 neV). As with the microwave cavity experiments such as HAYSTAC, the experiment is based on the Primakoff interaction by which a pseudoscalar such as the axion can convert into a single real photon in the presence of a magnetic field. However in this case, the microwave cavity is replaced with a lumped-element LC resonator, which allows the experiment to probe to much lower frequencies. DM Radio 50 Liter will be operational in 2022; DM Radio Cubic Meter by 2025.
