Speaker
Description
The axion is a compelling candidate for cold dark matter and a favored solution to the strong CP problem. In this talk, I overview Dark Matter Radio (DMRadio), a campaign to search for the coupling of axion dark matter to electromagnetism at masses below 1 ueV. I discuss the status of DMRadio-50L, which will begin data-taking in 2024, and DMRadio-m3, under design as part of the DOE Dark Matter New Initiatives program. DMRadio-m3 possesses projected sensitivity to the well-motivated DFSZ QCD axion model in the mass range 0.12-0.8 ueV. I describe the resonator and readout technologies utilized in the DMRadio campaign. The combination of high-Q superconducting resonators and sensors operating beyond the Standard Quantum Limit of amplification at kHz-MHz frequencies may enable a definitive search for GUT-scale QCD axions, the ultimate goal of the DMRadio program.
