Exclusion Limits on Hidden-Photon Dark Matter near 2 neV from a Fixed-Frequency Superconducting Lumped-Element Resonator. (arXiv:1906.08814v1 [astro-ph.CO])

Exclusion Limits on Hidden-Photon Dark Matter near 2 neV from a Fixed-Frequency Superconducting Lumped-Element Resonator. (arXiv:1906.08814v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Phipps_A/0/1/0/all/0/1">A. Phipps</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kuenstner_S/0/1/0/all/0/1">S. E. Kuenstner</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Chaudhuri_S/0/1/0/all/0/1">S. Chaudhuri</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dawson_C/0/1/0/all/0/1">C. S. Dawson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Young_B/0/1/0/all/0/1">B. A. Young</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+FitzGerald_C/0/1/0/all/0/1">C. T. FitzGerald</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Froland_H/0/1/0/all/0/1">H. Froland</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wells_K/0/1/0/all/0/1">K. Wells</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Li_D/0/1/0/all/0/1">D. Li</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cho_H/0/1/0/all/0/1">H. M. Cho</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rajendran_S/0/1/0/all/0/1">S. Rajendran</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Graham_P/0/1/0/all/0/1">P. W. Graham</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Irwin_K/0/1/0/all/0/1">K. D. Irwin</a>

We present the design and performance of a simple fixed-frequency
superconducting lumped-element resonator developed for axion and hidden photon
dark matter detection. A rectangular NbTi inductor was coupled to a Nb-coated
sapphire capacitor and immersed in liquid helium within a superconducting
shield. The resonator was transformer-coupled to a DC SQUID for readout. We
measured a quality factor of $sim$40,000 at the resonant frequency of 492.027
kHz and set a simple exclusion limit on $sim$2 neV hidden photons with kinetic
mixing angle $varepsilongtrsim1.5times10^{-9}$ based on 5.14 hours of
integrated noise. This test device informs the development of the Dark Matter
Radio, a tunable superconducting lumped-element resonator which will search for
axions and hidden photons over the 100 Hz to 300 MHz frequency range.

We present the design and performance of a simple fixed-frequency
superconducting lumped-element resonator developed for axion and hidden photon
dark matter detection. A rectangular NbTi inductor was coupled to a Nb-coated
sapphire capacitor and immersed in liquid helium within a superconducting
shield. The resonator was transformer-coupled to a DC SQUID for readout. We
measured a quality factor of $sim$40,000 at the resonant frequency of 492.027
kHz and set a simple exclusion limit on $sim$2 neV hidden photons with kinetic
mixing angle $varepsilongtrsim1.5times10^{-9}$ based on 5.14 hours of
integrated noise. This test device informs the development of the Dark Matter
Radio, a tunable superconducting lumped-element resonator which will search for
axions and hidden photons over the 100 Hz to 300 MHz frequency range.

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