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arXiv · 2110.10607

First observation and analysis of DANCE: Dark matter Axion search with riNg Cavity Experiment

Yuka Oshima·Hiroki Fujimoto·Masaki Ando·Tomohiro Fujita·Jun'ya Kume·Yuta Michimura·Soichiro Morisaki·Koji Nagano·Hiromasa Nakatsuka·Atsushi Nishizawa·Ippei Obata·Taihei Watanabe
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Abstract

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.

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Yuka Oshima, Hiroki Fujimoto, Masaki Ando, Tomohiro Fujita, Jun'ya Kume, Yuta Michimura, Soichiro Morisaki, Koji Nagano, Hiromasa Nakatsuka, Atsushi Nishizawa, Ippei Obata, Taihei Watanabe. 2021-10-20. First observation and analysis of DANCE: Dark matter Axion search with riNg Cavity Experiment. https://doi.org/10.1088/1742-6596%2F2156%2F1%2F012042

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