An improvement in the VIRGO super attenuator for interferometric detection of gravitational waves: The use of a magnetic antispring

S. Braccini, C. Bradaschia, M. Cobal, R. Del Fabbro, A. Di Virgilio, R. Flaminio, A. Giazotto, H. Kautzky, M. Morganti, D. Passuello, E. Calloni, L. Di Fiore, L.E. Holloway, V. Montelatici

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Abstract

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.
Original languageEnglish
Pages (from-to)310 - 313
Number of pages4
JournalReview of Scientific Instruments
Volume64
Issue number2
DOIs
Publication statusPublished - 1993
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Braccini, S., Bradaschia, C., Cobal, M., Del Fabbro, R., Di Virgilio, A., Flaminio, R., ... Montelatici, V. (1993). An improvement in the VIRGO super attenuator for interferometric detection of gravitational waves: The use of a magnetic antispring. Review of Scientific Instruments, 64(2), 310 - 313. https://doi.org/10.1063/1.1144249