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A SQUID-based microwave cavity search for dark-matter axions

Collaboration, TADMX; Asztalos, SJ; Carosi, G; Hagmann, C; Kinion, D; Bibber, KV; Hotz, M; ... Clarke, J; + view all (2010) A SQUID-based microwave cavity search for dark-matter axions. Phys.Rev.Lett. , 104 (4) , Article e041301. 10.1103/PhysRevLett.104.041301. Green open access

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Abstract

Axions in the micro eV mass range are a plausible cold dark matter candidate and may be detected by their conversion into microwave photons in a resonant cavity immersed in a static magnetic field. The first result from such an axion search using a superconducting first-stage amplifier (SQUID) is reported. The SQUID amplifier, replacing a conventional GaAs field-effect transistor amplifier, successfully reached axion-photon coupling sensitivity in the band set by present axion models and sets the stage for a definitive axion search utilizing near quantum-limited SQUID amplifiers.

Type: Article
Title: A SQUID-based microwave cavity search for dark-matter axions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.104.041301
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.104.041301
Language: English
Additional information: © 2010 The American Physical Society
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1375167
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