A vacuum-compatible cylindrical inertial rotation sensor with picoradian sensitivity

Creators: 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.

Abstract

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.

Copyright and License

Acknowledgement

Participation from the University of Washington, Seattle, was supported by funding from the NSF under Award Nos. PHY-1607385, PHY-1607391, PHY-1912380, and PHY-1912514. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (Grant Agreement No. 865816).

Contributions

M. P. Ross: Conceptualization (lead); Data curation (lead); Formal analysis (lead); Funding acquisition (equal); Investigation (lead); Writing – original draft (lead); Writing – review & editing (equal). J. van Dongen: Data curation (equal); Investigation (equal); Methodology (equal); Validation (equal); Writing – review & editing (equal). Y. Huang: Investigation (equal); Resources (equal); Software (equal). H. Zhou: Formal analysis (equal); Investigation (equal); Methodology (equal). Y. Chowdhury: Investigation (equal). S. K. Apple: Investigation (equal); Methodology (equal); Writing – review & editing (equal). C. M. Mow-Lowry: Conceptualization (equal); Investigation (equal); Writing – review & editing (equal). A. L. Mitchell: Investigation (equal); Software (equal). N. A. Holland: Investigation (equal). B. Lantz: Conceptualization (equal); Investigation (equal). E. Bonilla: Conceptualization (equal); Investigation (equal). A. Engl: Investigation (equal). A. Pele: Conceptualization (equal); Investigation (equal). D. Griffith: Resources (equal). E. Sanchez: Investigation (equal); Resources (equal). E. A. Shaw: Investigation (equal). C. Gettings: Investigation (equal). J. Gundlach: Conceptualization (equal); Formal analysis (equal); Funding acquisition (equal); Investigation (equal); Project administration (equal); Resources (equal); Supervision (equal); Writing – review & editing (equal).

Data Availability

Schematics of the CRS can be found at https://github.com/mpross/CRS-Schematics. The code and data to generate the plots shown here can be found at https://github.com/mpross/CRS-Analysis.

Conflict of Interest

The authors have no conflicts to disclose.

Errata

This article was originally published online on 22 September 2023 with typesetting errors. These errors have been corrected. AIP Publishing apologizes for the errors. All online versions of the article were corrected on 7 November 2023.

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