Details

Autor(en) / Beteiligte

• Bortoli, F.S.
• Frajuca, C.
• Aguiar, O.D.

Titel

Schenberg microwave cabling seismic isolation

Ist Teil von

• Journal of physics. Conference series, 2018-02, Vol.957 (1), p.12013

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2018

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• SCHENBERG is a resonant-mass gravitational wave detector with a frequency about 3.2 kHz. Its spherical antenna, weighing 1.15 metric ton, is connected to the external world by a system which must attenuate seismic noise. When a gravitational wave passes the antenna vibrates, its motion is monitored by transducers. These parametric transducers uses microwaves carried by coaxial cables that are also connected to the external world, they also carry seismic noise. In this analysis the system was modeled using finite element method. This work shows that the addition of masses along these cables can decrease this noise, so that this noise is below the thermal noise of the detector when operating at 50 mK.