Speaker
Description
In order to access the high-frequency regime motivated by post-inflationary axion scenarios, new haloscope designs are required. A simple yet underexplored geometry is the open Fabry-Pérot resonator, whose volume scales as 1/f rather than the punishing 1/f³ of traditional cavity haloscopes. We present FAxE (Fabry-Pérot Axion Experiment), a haloscope concept using an open Fabry-Pérot resonator (FPR) formed by two curved mirrors in a strong magnetic field, designed to exploit this favorable scaling to probe axion masses in the 40–70 GHz range. We present refined simulation studies of the resonator design, first experimental validation, and outline our plans toward a cryogenic, high-field implementation, including mirror alignment, coupling schemes, and superconducting mirror coatings needed to approach sensitivity to the QCD axion.
| Primary Abstract Topic | Experiment: Axions and Wave-Like-DM |
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