Interferometric sensing of a commercial geophone

S. J. Cooper; C. J. Collins; L. Prokhorov; J. Warner; D. Hoyland; C. M. Mow-Lowry

doi:10.1088/1361-6382/ac595c

Interferometric sensing of a commercial geophone

S. J. Cooper^*
, C. J. Collins
, L. Prokhorov
, J. Warner
, D. Hoyland
, C. M. Mow-Lowry

^*Corresponding author for this work

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

We present a modified commercial L-4C geophone with interferometric readout that demonstrates a resolution 60 times lower than the included coil-magnet readout at low frequencies. The intended application for the modified sensor is in vibration isolation platforms that require improved performance at frequencies lower than 1 Hz. To illustrate it's application a controls- and noise-model of an Advanced LIGO 'HAM-ISI' vibration isolation system was developed, and shows that our sensor can reduce the residual motion of the platforms by a factor of 70 at 0.1 Hz.

Original language	English
Article number	075023
Pages (from-to)	1-11
Number of pages	11
Journal	Classical and Quantum Gravity
Volume	39
Issue number	7
Early online date	17 Mar 2022
DOIs	https://doi.org/10.1088/1361-6382/ac595c
Publication status	Published - 7 Apr 2022

Bibliographical note

Funding Information:
We thank John Bryant for technical support, Maura Shea and Isaac Davis for integration and testing of the data acquisition systems used in this project. The authors acknowledge the support of the Institute for Gravitational Wave Astronomy at the University of Birmingham, STFC ‘Astrophysics at the University of Birmingham’ Grant ST/S000305/1.

Publisher Copyright:
© 2022 The Author(s). Published by IOP Publishing Ltd.

Funding

We thank John Bryant for technical support, Maura Shea and Isaac Davis for integration and testing of the data acquisition systems used in this project. The authors acknowledge the support of the Institute for Gravitational Wave Astronomy at the University of Birmingham, STFC ‘Astrophysics at the University of Birmingham’ Grant ST/S000305/1.

Funders	Funder number
University of Birmingham
Science and Technology Facilities Council
UK Research and Innovation	ST/S000305/1

Keywords

homodyne detection
inertial sensing
interferometry

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10.1088/1361-6382/ac595c

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Cite this

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title = "Interferometric sensing of a commercial geophone",

abstract = "We present a modified commercial L-4C geophone with interferometric readout that demonstrates a resolution 60 times lower than the included coil-magnet readout at low frequencies. The intended application for the modified sensor is in vibration isolation platforms that require improved performance at frequencies lower than 1 Hz. To illustrate it's application a controls- and noise-model of an Advanced LIGO 'HAM-ISI' vibration isolation system was developed, and shows that our sensor can reduce the residual motion of the platforms by a factor of 70 at 0.1 Hz. ",

keywords = "homodyne detection, inertial sensing, interferometry",

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note = "Funding Information: We thank John Bryant for technical support, Maura Shea and Isaac Davis for integration and testing of the data acquisition systems used in this project. The authors acknowledge the support of the Institute for Gravitational Wave Astronomy at the University of Birmingham, STFC {\textquoteleft}Astrophysics at the University of Birmingham{\textquoteright} Grant ST/S000305/1. Publisher Copyright: {\textcopyright} 2022 The Author(s). Published by IOP Publishing Ltd.",

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AU - Collins, C. J.

AU - Prokhorov, L.

AU - Warner, J.

AU - Hoyland, D.

AU - Mow-Lowry, C. M.

N1 - Funding Information: We thank John Bryant for technical support, Maura Shea and Isaac Davis for integration and testing of the data acquisition systems used in this project. The authors acknowledge the support of the Institute for Gravitational Wave Astronomy at the University of Birmingham, STFC ‘Astrophysics at the University of Birmingham’ Grant ST/S000305/1. Publisher Copyright: © 2022 The Author(s). Published by IOP Publishing Ltd.

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N2 - We present a modified commercial L-4C geophone with interferometric readout that demonstrates a resolution 60 times lower than the included coil-magnet readout at low frequencies. The intended application for the modified sensor is in vibration isolation platforms that require improved performance at frequencies lower than 1 Hz. To illustrate it's application a controls- and noise-model of an Advanced LIGO 'HAM-ISI' vibration isolation system was developed, and shows that our sensor can reduce the residual motion of the platforms by a factor of 70 at 0.1 Hz.

AB - We present a modified commercial L-4C geophone with interferometric readout that demonstrates a resolution 60 times lower than the included coil-magnet readout at low frequencies. The intended application for the modified sensor is in vibration isolation platforms that require improved performance at frequencies lower than 1 Hz. To illustrate it's application a controls- and noise-model of an Advanced LIGO 'HAM-ISI' vibration isolation system was developed, and shows that our sensor can reduce the residual motion of the platforms by a factor of 70 at 0.1 Hz.

KW - homodyne detection

KW - inertial sensing

KW - interferometry

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ER -

Interferometric sensing of a commercial geophone

Abstract

Bibliographical note

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Keywords

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