Note: A three-dimension active vibration isolator for precision atom gravimeters

An ultra-low frequency active vibration isolator, simultaneously suppressing three-dimensional vibration noise, is demonstrated experimentally. The equivalent natural period of the isolator is 100 s and 12 s for the vertical and horizontal direction, respectively. The vibration noise in the vertical...

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Bibliographic Details
Published in:Review of scientific instruments 2015-04, Vol.86 (4), p.046108-046108
Main Authors: Zhou, Min-Kang, Xiong, Xin, Chen, Le-Le, Cui, Jia-Feng, Duan, Xiao-Chun, Hu, Zhong-Kun
Format: Article
Language:English
Subjects:
ACCURACY
ATOMS
Couplings
DESIGN
Extremely low frequencies
FREQUENCY RANGE
Gravimeters
Gravimetry
Horizontal orientation
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
NOISE
Scientific apparatus & instruments
SENSITIVITY
THREE-DIMENSIONAL CALCULATIONS
Vibration isolators
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Summary:An ultra-low frequency active vibration isolator, simultaneously suppressing three-dimensional vibration noise, is demonstrated experimentally. The equivalent natural period of the isolator is 100 s and 12 s for the vertical and horizontal direction, respectively. The vibration noise in the vertical direction is about 50 times reduced during 0.2 and 2 Hz, and 5 times reduced in the other two orthogonal directions in the same frequency range. This isolator is designed for atom gravimeters, especially suitable for the gravimeter whose sensitivity is limited by vibration couplings.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4919292