TorPeDO: A Low Frequency Gravitational Force Sensor

D. J. McManus; M. J. Yap; R. L. Ward; D. A. Shaddock; D. E. McClelland; B. J.J. Slagmolen

doi:10.1088/1742-6596/716/1/012027

TorPeDO: A Low Frequency Gravitational Force Sensor

D. J. McManus, M. J. Yap, R. L. Ward, D. A. Shaddock, D. E. McClelland, B. J.J. Slagmolen

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

Second generation gravitational wave detectors are likely to be limited by Newtonian Noise at low frequencies. A dual torsion pendulum sensor aimed at exploring low- frequency gravitational-force noise is being studied at the ANU. This sensor is designed to measure local gravitational forces to high precision and will be limited by Newtonian noise. We report on a controls prototype which has been constructed and suspended, along with initial characterisation and testing of the two torsion pendulums. Large weights at the end of each bar reposition the centres of mass to the same point in space external to both bars. Since both bars have a common suspension point, resonant frequency (≈33.4 mHz), and centre of mass, mechanical disturbances and other noise will affect both bars in the same manner, providing a large mechanical common mode rejection.

Original language	English
Article number	012027
Journal	Journal of Physics: Conference Series
Volume	716
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/716/1/012027
Publication status	Published - 2 Jun 2016
Event	11th Edoardo Amaldi Conference on Gravitational Waves, AMALDI 2015 - Gwangju, Korea, Republic of Duration: 21 Jun 2015 → 26 Jun 2015

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10.1088/1742-6596/716/1/012027

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title = "TorPeDO: A Low Frequency Gravitational Force Sensor",

abstract = "Second generation gravitational wave detectors are likely to be limited by Newtonian Noise at low frequencies. A dual torsion pendulum sensor aimed at exploring low- frequency gravitational-force noise is being studied at the ANU. This sensor is designed to measure local gravitational forces to high precision and will be limited by Newtonian noise. We report on a controls prototype which has been constructed and suspended, along with initial characterisation and testing of the two torsion pendulums. Large weights at the end of each bar reposition the centres of mass to the same point in space external to both bars. Since both bars have a common suspension point, resonant frequency (≈33.4 mHz), and centre of mass, mechanical disturbances and other noise will affect both bars in the same manner, providing a large mechanical common mode rejection.",

author = "McManus, {D. J.} and Yap, {M. J.} and Ward, {R. L.} and Shaddock, {D. A.} and McClelland, {D. E.} and Slagmolen, {B. J.J.}",

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T2 - 11th Edoardo Amaldi Conference on Gravitational Waves, AMALDI 2015

AU - McManus, D. J.

AU - Yap, M. J.

AU - Ward, R. L.

AU - Shaddock, D. A.

AU - McClelland, D. E.

AU - Slagmolen, B. J.J.

PY - 2016/6/2

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N2 - Second generation gravitational wave detectors are likely to be limited by Newtonian Noise at low frequencies. A dual torsion pendulum sensor aimed at exploring low- frequency gravitational-force noise is being studied at the ANU. This sensor is designed to measure local gravitational forces to high precision and will be limited by Newtonian noise. We report on a controls prototype which has been constructed and suspended, along with initial characterisation and testing of the two torsion pendulums. Large weights at the end of each bar reposition the centres of mass to the same point in space external to both bars. Since both bars have a common suspension point, resonant frequency (≈33.4 mHz), and centre of mass, mechanical disturbances and other noise will affect both bars in the same manner, providing a large mechanical common mode rejection.

AB - Second generation gravitational wave detectors are likely to be limited by Newtonian Noise at low frequencies. A dual torsion pendulum sensor aimed at exploring low- frequency gravitational-force noise is being studied at the ANU. This sensor is designed to measure local gravitational forces to high precision and will be limited by Newtonian noise. We report on a controls prototype which has been constructed and suspended, along with initial characterisation and testing of the two torsion pendulums. Large weights at the end of each bar reposition the centres of mass to the same point in space external to both bars. Since both bars have a common suspension point, resonant frequency (≈33.4 mHz), and centre of mass, mechanical disturbances and other noise will affect both bars in the same manner, providing a large mechanical common mode rejection.

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Y2 - 21 June 2015 through 26 June 2015

ER -

TorPeDO: A Low Frequency Gravitational Force Sensor

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