A vacuum-compatible cylindrical inertial rotation sensor with picoradian sensitivity

We describe an inertial rotation sensor with a 30-cm cylindrical proof-mass suspended from a pair of 14 μm thick BeCu flexures. The angle between the proof-mass and support structure is measured with a pair of homodyne interferometers, which achieve a noise level of ∼5prad/Hz. The sensor is entirely...

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Bibliographic Details
Published in:Review of scientific instruments 2023-09, Vol.94 (9)
Main Authors: Ross, M. P., van Dongen, J., Huang, Y., Zhou, H., Chowdhury, Y., Apple, S. K., Mow-Lowry, C. M., Mitchell, A. L., Holland, N. A., Lantz, B., Bonilla, E., Engl, A., Pele, A., Griffith, D., Sanchez, E., Shaw, E. A., Gettings, C., Gundlach, J.
Format: Article
Language:English
Subjects:
Inertial sensing devices
Noise levels
Rotation
Scientific apparatus & instruments
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Summary:We describe an inertial rotation sensor with a 30-cm cylindrical proof-mass suspended from a pair of 14 μm thick BeCu flexures. The angle between the proof-mass and support structure is measured with a pair of homodyne interferometers, which achieve a noise level of ∼5prad/Hz. The sensor is entirely made of vacuum compatible materials, and the center of mass can be adjusted remotely.
ISSN:0034-6748
1089-7623
DOI:10.1063/5.0167283