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arXiv · 1712.01062

MADMAX: A new road to axion dark matter detection

B. Majorovits
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Abstract

The axion is a hypothetical low-mass boson predicted by the Peccei-Quinn mechanism solving the strong CP problem. It is naturally also a cold dark matter candidate if its mass is below $\sim$\,1\,meV, thus simultaneously solving two major problems of nature. All existing experimental efforts to detect QCD axions focus on a range of axion masses below $\sim$\,25$\,μ$eV. The mass range above $\sim$\,40$\,μ$eV, predicted by modern models in which the Peccei-Quinn symmetry was restored after inflation, could not be explored so far. The MADMAX project is designed to be sensitive for axions with masses (40--400$)\,μ$eV. The experimental design is based on the idea of enhanced axion-photon conversion in a system with several layers with alternating dielectric constants. The concept and the proposed design of the MADMAX experiment are discussed. Measurements taken with a prototype test setup are discussed. The prospects for reaching sensitivity enough to cover the parameter space predicted for QCD dark matter axions with mass in the range around 100\,$μ$eV is presented.

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B. Majorovits. 2017-12-04. MADMAX: A new road to axion dark matter detection. https://arxiv.org/abs/1712.01062

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