Seismic Noise Effect on Equivalence Principle Test
Using Free-Fall Interferometry
ZHOU Ze-Bing1, LUO Jun1, YAN Qin1, ZHANG Yuan-Zhong2, NIE Yu-Xin 3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Institute of Theoretical Physics, Chinese Academy of Sciences,Beijing 100080
3Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Seismic Noise Effect on Equivalence Principle Test
Using Free-Fall Interferometry
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Institute of Theoretical Physics, Chinese Academy of Sciences,Beijing 100080
3Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Abstract： A simple interferometer was used to monitor the seismic noise effect on the equivalence principle test using the free-fall interferometric method. The experimental result showed that this effect was below λ/100, where λ is the wavelength of the laser beam, and the uncertainty of the differential gravity acceleration of the individual free-fall result due to this effect was about 0.6μGal.
2001, Vol. 18 
