Updates on the ZAIGA project

ZAIGA (the Zhaoshan long-baseline Atom Interferometer Gravitation Antenna) is a proposed underground long-baseline atom interferometer (AI) facility, aiming for experimental research on gravitation and related problems. It includes gravitational wave detection (ZAIGA-GW), dark matter detection (ZAIGA-DM), high-precision test of the equivalence principle of micro-particles (ZAIGA-EP), clock-based gravitational red-shift measurement (ZAIGA-CE-R), rotation measurement and gravitomagnetic effect (ZAIGA-RM and ZAIGA-GG). In this talk, we will report the current status of the ZAIGA project, including the brief overview, the environment and infrastructure design, and the development on key unit technologies. References: 1 Mingsheng Zhan et al., ZAIGA: Zhaoshan Long-baseline Atom Interferometer Gravitation Antenna, Int. J. Mod. Phys. D 29, 1940005 (2020) [2] Wei Zhao, Xitong Mei, Dongfeng Gao, Jin Wang, and Mingsheng Zhan, Ultralight scalar dark matter detection with ZAIGA, Int. J. Mod. Phys. D 31, 2250037 (2022). [3] Pre-research report of the ZAIGA project, not published.