ADMX SLIC: Results from a Superconducting LC Circuit Investigating Cold Axions

N. Crisosto; G. Rybka; P. Sikivie; N. S. Sullivan; D. B. Tanner; J. Yang

doi:10.1103/PhysRevLett.124.241101

paper

ADMX SLIC: Results from a Superconducting LC Circuit Investigating Cold Axions

arXiv:1911.05772 · doi:10.1103/PhysRevLett.124.241101

Abstract

Axions are a promising cold dark matter candidate. Haloscopes, which use the conversion of axions to photons in the presence of a magnetic field to detect axions, are the basis of microwave cavity searches such as the Axion Dark Matter eXperiment (ADMX). To search for lighter, low frequency axions in the sub $2 \times 1 0^{- 7}$ eV (50 MHz) range, a tunable lumped-element LC circuit has been proposed. For the first time, through ADMX SLIC (Superconducting Lc circuit Investigating Cold axions), a resonant LC circuit was used to probe this region of axion mass-coupling space. The detector used a superconducting LC circuit with piezoelectric driven capacitive tuning. The axion mass and corresponding frequency range $1.7498 - 1.7519 \times 1 0^{- 7}$ eV (42.31 -- 42.36 MHz), $1.7734 - 1.7738 \times 1 0^{- 7}$ eV (42.88 -- 42.89 MHz), and $1.8007 - 1.8015 \times 1 0^{- 7}$ eV (43.54 -- 43.56 MHz) was covered at magnetic fields of 4.5 T, 5.0 T, and 7.0 T respectively. Exclusion results from the search data, for coupling below $1 0^{- 12} GeV^{- 1}$ are presented.

ADMX SLIC: Results from a Superconducting LC Circuit Investigating Cold Axions

Abstract

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