High quality factor photonic cavity for dark matter axion searches

Abstract

Searches for dark matter axion involve the use of microwave resonant cavities operating in a strong magnetic field. Detector sensitivity is directly related to the cavity quality factor, which is limited, however, by the presence of the external magnetic field. In this paper we present a cavity of novel design whose quality factor is not affected by a magnetic field. It is based on a photonic structure by the use of sapphire rods. The quality factor at cryogenic temperature is in excess of $5\times 10^5$ for a selected mode.

arXiv comment6 pages, 7 figures

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• Wire metamaterial filled metallic resonators
• A method based on a dual frequency resonator to estimate physical parameters of superconductors from surface impedance measurements in a magnetic field
• Impact of the superconductors properties on the measurement sensitivity of resonant-based axion detectors
• Development of a cavity with photonic crystal structure for axion searches
• On the use of dielectric elements in axion searches with microwave resonant cavities
• A new class of axion haloscope resonators: the polygonal coaxial cavity