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arXiv · 1403.6720

Improving Dark Matter Axion Searches with Active Resonators

Gray Rybka
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Abstract

Axions are a well motivated candidate for dark matter. The most sensitive experiments searching for dark matter axions rely on the coupling of axions to the electromagnetic resonances of a microwave cavity immersed in a strong magnetic field. The sensitivity of the experiment is proportional to the Q of the resonance that is coupled to axions. To date, the resonators used in axion searches have all been passive, with Qs limited by power loss in the cavity walls. I propose the use of active feedback resonators to increase the Q of microwave cavity axion dark matter experiments by several orders of magnitude. This should allow experiments to significantly increase the rate at which they can test potential axion masses and couplings.

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Gray Rybka. 2014-03-26. Improving Dark Matter Axion Searches with Active Resonators. https://arxiv.org/abs/1403.6720

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