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Languages : en
Pages : 28
Book Description
We review the status of an ongoing large-scale search for axions which may constitute the dark matter of our Milky Way halo. The experiment is based on the microwave cavity technique proposed by Sikivie, and marks a ''second-generation'' to the original experiments performed by the Rochester-Brookhaven-Fermilab collaboration, and the University of Florida group. Sensitivity to galactic asions has been achieved, at least for one important model coupling. A remarkable breakthrough in making near-quantum Limited dc SQUID amplifiers in the several hundred megahertz range has provided the enabling technology for a major upgrade of this effort. By improving the noise temperature by more than an order of magnitude, a much more sensitive search may be carried out, greatly improving the prospects for discovering the asion.