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 gaγ for axion mass ma < 10−10 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 × 10−6 rad/√Hz at 10 Hz in the one-sided amplitude spectral density of the rotation angle of linear polarization.
|ジャーナル||Journal of Physics: Conference Series|
|出版ステータス||Published - 2022 2月 21|
|イベント||17th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2021 - Virtual, Online|
継続期間: 2021 8月 26 → 2021 9月 3
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