Introducing the Princeton Axion Search (PXS)

In this talk, I introduce the Princeton Axion Search (PXS), a QCD axion search probing the 0.8-2.1 ueV (200-500 MHz) mass range through the electromagnetic coupling. This is the critical transitional mass range between the DMRadio Program, which operates at frequencies below any cavity modes, and the cavity regime at higher frequencies probed by experiments such as ADMX. I present an overview of the conceptual design and R&D plan, describing the cryogenics, solenoidal magnet, near-quantum-limited amplifiers, and resonators needed for a definitive axion search in this range. PXS will leverage a strong collaboration with the Princeton Plasma Physics Laboratory to design and build a large bore, conduction-cooled solenoid. PXS will develop high Q resonators and superconducting sensors operating beyond the Standard Quantum Limit of amplification in partnership with the DMRadio collaboration.