Search for Dark Matter Axions with CAST-CAPP
2022 | journal article. A publication with affiliation to the University of Göttingen.
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Search for Dark Matter Axions with CAST-CAPP
Adair, C. M.; Altenmüller, K.; Anastassopoulos, V.; Arguedas Cuendis, S.; Baier, J.; Barth, K. & Belov, A. et al. (2022)
Nature Communications, 13(1). DOI: https://doi.org/10.1038/s41467-022-33913-6
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Details
- Authors
- Adair, C. M.; Altenmüller, K.; Anastassopoulos, V.; Arguedas Cuendis, S.; Baier, J.; Barth, K.; Belov, A.; Bozicevic, D.; Bräuninger, H.; Cantatore, G.; Zioutas, K.
- Abstract
- Abstract The CAST-CAPP axion haloscope, operating at CERN inside the CAST dipole magnet, has searched for axions in the 19.74 μ eV to 22.47 μ eV mass range. The detection concept follows the Sikivie haloscope principle, where Dark Matter axions convert into photons within a resonator immersed in a magnetic field. The CAST-CAPP resonator is an array of four individual rectangular cavities inserted in a strong dipole magnet, phase-matched to maximize the detection sensitivity. Here we report on the data acquired for 4124 h from 2019 to 2021. Each cavity is equipped with a fast frequency tuning mechanism of 10 MHz/ min between 4.774 GHz and 5.434 GHz. In the present work, we exclude axion-photon couplings for virialized galactic axions down to g a γ γ = 8 × 10 −14 GeV −1 at the 90% confidence level. The here implemented phase-matching technique also allows for future large-scale upgrades.
- Issue Date
- 2022
- Journal
- Nature Communications
- Organization
- Max-Planck-Institut für Sonnensystemforschung
- eISSN
- 2041-1723
- Language
- English
