Title of article
Improvement of the seismic noise attenuation performance of the Monolithic Geometric Anti-Spring filters for gravitational wave interferometric detectors
Author/Authors
Stochino، نويسنده , , Alberto and DeSalvo، نويسنده , , Riccardo and Huang، نويسنده , , Yumei and Sannibale، نويسنده , , Virginio، نويسنده ,
Pages
6
From page
1559
To page
1564
Abstract
The Monolithic Geometric Anti-Spring (GAS) filter is one of the most efficient vertical seismic isolation devices for Gravitational Wave (GW) interferometers. However, the attenuation of this filter was previously limited to around 60 dB due to the high frequency saturation associated with the filterʹs distributed mass—a problem typical of passive mechanical filters. We show that it is possible to circumvent this limit using a compensation wand based on the Center Of Percussion (COP) effect. When this device is mounted in parallel with the blade springs of a GAS filter, attenuation improves to 80 dB in the region above 10 Hz. Using this device it is therefore possible to design simpler attenuation chains consisting of fewer stages.
Keywords
Seismic attenuation , Mechanical filters , Center Of Percussion , gravitational waves
Journal title
Astroparticle Physics
Record number
2030672
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