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Operation of a Ferromagnetic Axion Haloscope

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Microwave Cavities and Detectors for Axion Research

Abstract

The QUAX proposal studies the interaction of dark matter axions with electrons. As the effect of axions can be described as an effective magnetic field, the signal is a magnetization oscillation of a sample. To detect it, the material is placed in a resonant cavity and polarized with a static magnetic field. Here we describe the operation of such a device, with a resonance frequency of 14 GHz, corresponding to an axion mass ma = 58 μeV. Eventually some recent developments on the resonant cavities design and test are detailed.

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References

  1. R. Barbieri et al., Phys. Dark Univ. 15, 135 (2017)

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Acknowledgements

The authors wish to thank Mario Tessaro, Fulvio Calaon, Massimo Rebeschini, Enrico Berto, Mario Zago, and Andrea Benato for the help with cryogenics and for the mechanical and electronic work on the experimental setup. We acknowledge the support of Giampaolo Galet and Lorenzo Castellani for the building of the magnet power supply, and Riccardo Barbieri for the stimulating theoretical discussions. We eventually acknowledge Gianpaolo Carosi and Gray Rybka for all the time spent working for this proceedings.

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Correspondence to N. Crescini .

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© 2020 This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply

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Alesini, D. et al. (2020). Operation of a Ferromagnetic Axion Haloscope. In: Carosi, G., Rybka, G. (eds) Microwave Cavities and Detectors for Axion Research. Springer Proceedings in Physics, vol 245. Springer, Cham. https://doi.org/10.1007/978-3-030-43761-9_12

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