An improvement in the VIRGO Super Attenuator for interferometric detection of gravitational waves - The use of a magnetic antispring

Details An improvement in the VIRGO Super Attenuator for interferometric detection of gravitational waves - The use of a magnetic antispring An improvement in the VIRGO Super Attenuator for interferometric detection of gravitational waves - The use of a magnetic antispring

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993rsci...64..310b&link_type=abstract

Review of Scientific Instruments (ISSN 0034-6748), vol. 64, no. 2, p. 310-313.

Physics

17

Attenuators, Gravitational Waves, Interferometers, Noise Reduction, Permanent Magnets, Magnetic Permeability, Resonant Frequencies

Scientific paper

We present a method of lowering below 2.5 Hz the vertical normal mode
frequencies of the Pisa Super Attenuator by using permanent magnets
which provide an antispring force. This method allows a more efficient
suppression of the seismic noise decreasing the lower limit of the
frequency region devoted to gravitational wave detection.

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