High dynamic range measurements of an all metal isolator using a sapphire transducer (for gravitational wave detectors)
- 1 May 1992
- journal article
- Published by IOP Publishing in Measurement Science and Technology
- Vol. 3 (5), 463-470
- https://doi.org/10.1088/0957-0233/3/5/005
Abstract
The authors report the performance and mechanical properties of an all metal mass-spring isolator with corner frequency about 44 Hz. Noise floor measurements using a prototype sapphire transducer and results of active damping of the low-frequency normal modes are given. The measurements described cover a total dynamic range of 160 dB, and show that no excess noise is generated above the thermal noise limit, even in the presence of high-amplitude excitation.Keywords
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