2022/01/11 by R. Di Vora, D. Alesini, Di Vora, R. +37
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Superconducting and THz Device Technology
paper · pdf · doi:10.48550/arxiv.2201.04223
openalex publication_date 2022/01/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The frequency band 1-15 GHz provides exciting prospects for resonant axion haloscopes as indicated by cosmological and astrophysical arguments. Among the challenges currently addressed to reach the required sensitivity, the development of high quality factor cavities that tolerate multi-Tesla fields plays a central role. We report a 3D resonator based on a right circular copper cavity with hollow cylinders that confine higher order modes around the cylinder axis. Its effective volume at 10.3 GHz is 3.4 ⋅ 10-2 liters, and under an 8 T-field we measured an internal quality factor of more than 9 millions. These parameters demonstrate the potential of this unique resonator to probe galactic dark matter axion at remarkable scan rates of 15 MHz/day when the cavity is readout by a quantum-limited receiver.