http://arxiv.org/abs/2110.10607
Dark matter Axion search with riNg Cavity Experiment (DANCE) was proposed to search for axion dark matter [Phys. Rev. Lett. 121, 161301 (2018)]. We aim to detect the rotation and oscillation of optical linear polarization caused by axion-photon coupling with a bow-tie cavity. DANCE can improve the sensitivity to axion-photon coupling constant $g_{a \gamma}$ for axion mass $m_a < 10^{-10}~\rm{eV}$ by several orders of magnitude compared to the best upper limits at present. A prototype experiment DANCE Act-1 is ongoing to demonstrate the feasibility of the method and to investigate technical noises. The optics was assembled and the performance of the cavity was evaluated. The first 12-day observation was successfully performed in May 2021. We reached $3 \times 10^{-6}~\rm{rad/\sqrt{Hz}}$ at $10~\rm{Hz}$ in the one-sided amplitude spectral density of the rotation angle of linear polarization.
Y. Oshima, H. Fujimoto, M. Ando, et. al.
Fri, 22 Oct 21
3/133
Comments: 5 pages, 3 figures, Proceedings for the 17th International Conference on Topics in Astroparticle and Underground Physics, online, August 26 – September 3, 2021. arXiv admin note: substantial text overlap with arXiv:2105.06252
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