The vibration isolation design for the transducers cabling of the SCHENBERG detector

Details The vibration isolation design for the transducers cabling of the SCHENBERG detector The vibration isolation design for the transducers cabling of the SCHENBERG detector

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005tmgm.meet.1985m&link_type=abstract

In: The Tenth Marcel Grossmann Meeting. Proceedings of the MG10 Meeting held at Brazilian Center for Research in Physics (CBPF),

Physics

Resonant Detectors, Gravitational Waves, Bars, Spheres

Scientific paper

Although the transducers coaxial cabling will not have any mechanical contact with the Brazilian spherical antenna surface, and so there will not be any vibration noise transmission from the laboratory to the antenna through this path, it is not desirable that this cabling be submitted to vibration in the frequency range of the antenna operation. The reason for that is because "microphonic" noise produced in the cabling before the preamplifiers can become dominant. In order to solve this problem we have designed a structure formed by small cilinders connected by cylindrical bars, which has no resonance in the frequency range of interest and works as a vibration isolation system. This structure was designed using a finite element model and the Msc/Nastran software.

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