High- Microwave Dielectric Resonator for Axion Dark-Matter Haloscopes
Jan 11, 2022
8 pages
Published in:
- Phys.Rev.Applied 17 (2022) 5, 054013
- Published: May 1, 2022
e-Print:
- 2201.04223 [physics.ins-det]
DOI:
- 10.1103/PhysRevApplied.17.054013 (publication)
Report number:
- FERMILAB-PUB-22-074-SQMS-V
Citations per year
Abstract: (APS)
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 multitesla fields plays a central role. We report a three-dimensional 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 l, and under an 8-T field we measure an internal quality factor of more than nine million. A fine-tuning system limited to approximately -MHz range is tested, useful for understanding the conditions required to run a haloscope with a cavity exceeding the axion quality factor.
The cavity parameters we report demonstrate the potential of this unique resonator to probe galactic dark-matter axion at scan rates exceeding 2 MHz/day when the cavity is readout by a quantum-limited receiver.Note:
- This material is based upon work supported by INFN (QUAX experiment) and the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Superconducting Quantum Materials and Systems Center (SQMS) under the contract No. DE-AC02-07CH11359.
- axion: dark matter
- axion: detector
- cavity: copper
- cavity: design
- galaxy: dark matter
- cylinder
- quality
- sensitivity
- microwaves
- dielectric
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