A Vacuum-Compatible Cylindrical Inertial Rotation Sensor with Picoradian Sensitivity
M. P. Ross, J. van Dongen, Y. Huang, P. Zhou, Y. Chowdhury, S. K., Apple, C. M. Mow-Lowry, A. L. Mitchell, N. A. Holland, B. Lantz, E. Bonilla,, A. Engl, A. Pele, D. Griffith, E. Sanchez, E. A. Shaw, C. Gettings, and J. H., Gundlach
TL;DR
This paper presents a vacuum-compatible cylindrical inertial rotation sensor with picoradian sensitivity, utilizing homodyne interferometers and a suspended proof-mass for highly precise rotation measurements in vacuum environments.
Contribution
It introduces a novel inertial rotation sensor design with picoradian sensitivity, vacuum compatibility, and remote center of mass adjustment, advancing precision rotation sensing technology.
Findings
Achieved noise level of ~5 prad/√Hz with interferometers
Sensor constructed from vacuum-compatible materials
Remote adjustment of the proof-mass center of mass
Abstract
We describe an inertial rotation sensor with a 30-cm cylindrical proof-mass suspended from a pair of 14-m 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 . The sensor is entirely made of vacuum compatible materials and the center of mass can be adjusted remotely.
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Taxonomy
TopicsGeophysics and Sensor Technology · Advanced MEMS and NEMS Technologies · Advanced Fiber Optic Sensors