A vertical inertial sensor with interferometric readout

Kranzhoff, L.; Lehmann, J.; Kirchhoff, R.; Carlassara, M.; Cooper , S. J.; Koch, P.; Leavey, S.; Lueck, H.; Mow-Lowry, C. M.; Woehler, J.; von Wrangel, J.; Wu, D.

doi:10.1088/1361-6382/aca45b

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学術論文

A vertical inertial sensor with interferometric readout

MPS-Authors

/persons/resource/persons231119

Kranzhoff, L.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons206589

Lehmann, J.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons206583

Kirchhoff, R.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons267626

Carlassara, M.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Cooper , S. J.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons206585

Koch, P.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons226610

Leavey, S.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40475

Lueck, H.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons104904

Mow-Lowry, C. M.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons206612

Woehler, J.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons231190

von Wrangel, J.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons206614

Wu, D.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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フルテキスト (公開)

2208.09320.pdf
(プレプリント), 3MB

Kranzhoff_2023_Class._Quantum_Grav._40_015007.pdf
(出版社版), 2MB

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引用

Kranzhoff, L., Lehmann, J., Kirchhoff, R., Carlassara, M., Cooper, S. J., Koch, P., Leavey, S., Lueck, H., Mow-Lowry, C. M., Woehler, J., von Wrangel, J., & Wu, D. (2023). A vertical inertial sensor with interferometric readout. Classical and Quantum Gravity, 40(1):. doi:10.1088/1361-6382/aca45b.

引用: https://hdl.handle.net/21.11116/0000-000A-EF40-1

要旨

High precision interferometers such as gravitational-wave detectors require
complex seismic isolation systems in order to decouple the experiment from
unwanted ground motion. Improved inertial sensors for active isolation
potentially enhance the sensitivity of existing and future gravitational-wave
detectors, especially below 30 Hz, and thereby increase the range of detectable
astrophysical signals. This paper presents a vertical inertial sensor which
senses the relative motion between an inertial test mass suspended by a blade
spring and a seismically isolated platform. An interferometric readout was used
which introduces low sensing noise, and preserves a large dynamic range due to
fringe-counting. The expected sensitivity is comparable to other
state-of-the-art interferometric inertial sensors and reaches values of
$10^{-10}\,\text{m}/\sqrt{\text{Hz}}$ at 100 mHz and
$10^{-12}\,\text{m}/\sqrt{\text{Hz}}$ at 1 Hz. The potential sensitivity
improvement compared to commercial L-4C geophones is shown to be about two
orders of magnitude at 10 mHz and 100 mHz and one order of magnitude at 1 Hz.
The noise performance is expected to be limited by thermal noise of the
inertial test mass suspension below 10 Hz. Further performance limitations of
the sensor, such as tilt-to-vertical coupling from a non-perfect levelling of
the test mass and nonlinearities in the interferometric readout, are also
quantified and discussed.