Axion search with a quantum-limited ferromagnetic haloscope
- URL: http://arxiv.org/abs/2001.08940v1
- Date: Fri, 24 Jan 2020 10:27:44 GMT
- Title: Axion search with a quantum-limited ferromagnetic haloscope
- Authors: N. Crescini, D. Alesini, C. Braggio, G. Carugno, D. D Agostino, D. Di
Gioacchino, P. Falferi, U. Gambardella, C. Gatti, G. Iannone, C. Ligi, A.
Lombardi, A. Ortolan, R. Pengo, G. Ruoso, L. Taffarello
- Abstract summary: A ferromagnetic axion haloscope searches for Dark Matter in the form of axions by exploiting their interaction with electronic spins.
The scientific run of our haloscope resulted in the best limit on DM-axions to electron coupling constant in a frequency span of about 120 MHz.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A ferromagnetic axion haloscope searches for Dark Matter in the form of
axions by exploiting their interaction with electronic spins. It is composed of
an axion-to-electromagnetic field transducer coupled to a sensitive rf
detector. The former is a photon-magnon hybrid system, and the latter is based
on a quantum-limited Josephson parametric amplifier. The hybrid system consists
of ten 2.1 mm diameter YIG spheres coupled to a single microwave cavity mode by
means of a static magnetic field. Our setup is the most sensitive rf
spin-magnetometer ever realized. The minimum detectable field is
$5.5\times10^{-19}\,$T with 9 h integration time, corresponding to a limit on
the axion-electron coupling constant $g_{aee}\le1.7\times10^{-11}$ at 95% CL.
The scientific run of our haloscope resulted in the best limit on DM-axions to
electron coupling constant in a frequency span of about 120 MHz, corresponding
to the axion mass range $42.4$-$43.1\,\mu$eV. This is also the first apparatus
to perform an axion mass scanning by changing the static magnetic field.
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