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- W2065754144 abstract "We have built and operated a large-scale axion detector, based on a method originally proposed by Sikivie, to search for halo axions. The apparatus consists of a cylindrical tunable high-Q microwave cavity threaded axially by a static high magnetic field. This field stimulates axions that enter the cavity to convert into single microwave photons. The conversion is resonantly enhanced when the cavity resonant frequency is near the axion rest mass energy. The experiment is cooled to 1.5 K and the electromagnetic power spectrum emitted by the cavity is measured by an ultra-low-noise microwave receiver. The axion would be detected as excess power in a narrow line within the cavity resonance. The apparatus has achieved a power sensitivity better than ${10}^{ensuremath{-}23} mathrm{W}$ in the mass range $2.9--3.3 ensuremath{mu}mathrm{eV}.$ For the first time the rf cavity technique has explored plausible axion models, assuming axions make up a significant fraction of the local halo density. The experiment continues to operate and will explore a large part of the mass in the range of $1--10 ensuremath{mu}mathrm{eV}$ in the near future. An upgrade of the experiment is planned with dc superconducting quantum interference device microwave amplifiers operating at a lower physical temperature. This next generation detector would be sensitive to even more weakly coupled axions contributing only fractionally to the local halo density." @default.
- W2065754144 created "2016-06-24" @default.
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- W2065754144 date "2001-10-05" @default.
- W2065754144 modified "2023-10-02" @default.
- W2065754144 title "Large-scale microwave cavity search for dark-matter axions" @default.
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- W2065754144 doi "https://doi.org/10.1103/physrevd.64.092003" @default.
- W2065754144 hasPublicationYear "2001" @default.
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