Suspensions Thermal Noise in the LIGO Gravitational Wave Detector

Details Suspensions Thermal Noise in the LIGO Gravitational Wave Detector Suspensions Thermal Noise in the LIGO Gravitational Wave Detector

2000-06-14

arxiv.org/abs/gr-qc/0006053v2

Class.Quant.Grav. 17 (2000) 4409-4436

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

28 pages, 13 figures

Scientific paper

10.1088/0264-9381/17/21/305

We present a calculation of the maximum sensitivity achievable by the LIGO Gravitational wave detector in construction, due to limiting thermal noise of its suspensions. We present a method to calculate thermal noise that allows the prediction of the suspension thermal noise in all its 6 degrees of freedom, from the energy dissipation due to the elasticity of the suspension wires. We show how this approach encompasses and explains previous ways to approximate the thermal noise limit in gravitational waver detectors. We show how this approach can be extended to more complicated suspensions to be used in future LIGO detectors.

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