A high precision, compact electromechanical ground rotation sensor

V. Dergachev; R. Desalvo; M. Asadoor; A. Bhawal; P. Gong; C. Kim; A. Lottarini; Y. Minenkov; C. Murphy; A. O'Toole; F. E. Peña Arellano; A. V. Rodionov; M. Shaner; E. Sobacchi

doi:10.1063/1.4875375

A high precision, compact electromechanical ground rotation sensor

V. Dergachev, R. Desalvo, M. Asadoor, A. Bhawal, P. Gong, C. Kim, A. Lottarini, Y. Minenkov, C. Murphy, A. O'Toole, F. E. Peña Arellano, A. V. Rodionov, M. Shaner, E. Sobacchi

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

We present a mechanical rotation sensor consisting of a balance pivoting on a tungsten carbide knife edge. These sensors are important for precision seismic isolation systems, as employed in land-based gravitational wave interferometers and for the new field of rotational seismology. The position sensor used is an air-core linear variable differential transformer with a demonstrated noise floor of 1×10-11 m/√Hz. We describe the instrument construction and demonstrate low noise operation with a noise floor upper bound of 5.7×10-9rad/√Hz at 10 mHz and 6.4×10-10 rad /√Hz at 0.1 Hz. The performance of the knife edge hinge is compatible with a behaviorur free of noise from dislocation self-organized criticality. © 2014 AIP Publishing LLC.

Original language	English
Pages (from-to)	054502-1 - 054502-13
Journal	Review of Scientific Instruments
Volume	85
Issue number	5
DOIs	https://doi.org/10.1063/1.4875375
Publication status	Published - 2014

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10.1063/1.4875375

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title = "A high precision, compact electromechanical ground rotation sensor",

abstract = "We present a mechanical rotation sensor consisting of a balance pivoting on a tungsten carbide knife edge. These sensors are important for precision seismic isolation systems, as employed in land-based gravitational wave interferometers and for the new field of rotational seismology. The position sensor used is an air-core linear variable differential transformer with a demonstrated noise floor of 1×10-11 m/√Hz. We describe the instrument construction and demonstrate low noise operation with a noise floor upper bound of 5.7×10-9rad/√Hz at 10 mHz and 6.4×10-10 rad /√Hz at 0.1 Hz. The performance of the knife edge hinge is compatible with a behaviorur free of noise from dislocation self-organized criticality. {\textcopyright} 2014 AIP Publishing LLC.",

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doi = "10.1063/1.4875375",

language = "English",

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TY - JOUR

T1 - A high precision, compact electromechanical ground rotation sensor

AU - Dergachev, V.

AU - Desalvo, R.

AU - Asadoor, M.

AU - Bhawal, A.

AU - Gong, P.

AU - Kim, C.

AU - Lottarini, A.

AU - Minenkov, Y.

AU - Murphy, C.

AU - O'Toole, A.

AU - Peña Arellano, F. E.

AU - Rodionov, A. V.

AU - Shaner, M.

AU - Sobacchi, E.

PY - 2014

Y1 - 2014

N2 - We present a mechanical rotation sensor consisting of a balance pivoting on a tungsten carbide knife edge. These sensors are important for precision seismic isolation systems, as employed in land-based gravitational wave interferometers and for the new field of rotational seismology. The position sensor used is an air-core linear variable differential transformer with a demonstrated noise floor of 1×10-11 m/√Hz. We describe the instrument construction and demonstrate low noise operation with a noise floor upper bound of 5.7×10-9rad/√Hz at 10 mHz and 6.4×10-10 rad /√Hz at 0.1 Hz. The performance of the knife edge hinge is compatible with a behaviorur free of noise from dislocation self-organized criticality. © 2014 AIP Publishing LLC.

AB - We present a mechanical rotation sensor consisting of a balance pivoting on a tungsten carbide knife edge. These sensors are important for precision seismic isolation systems, as employed in land-based gravitational wave interferometers and for the new field of rotational seismology. The position sensor used is an air-core linear variable differential transformer with a demonstrated noise floor of 1×10-11 m/√Hz. We describe the instrument construction and demonstrate low noise operation with a noise floor upper bound of 5.7×10-9rad/√Hz at 10 mHz and 6.4×10-10 rad /√Hz at 0.1 Hz. The performance of the knife edge hinge is compatible with a behaviorur free of noise from dislocation self-organized criticality. © 2014 AIP Publishing LLC.

U2 - 10.1063/1.4875375

DO - 10.1063/1.4875375

M3 - Article

C2 - 24880388

VL - 85

SP - 054502-1 - 054502-13

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

SN - 0034-6748

IS - 5

ER -

A high precision, compact electromechanical ground rotation sensor

Abstract

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