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Low-noise temperature gravitational-radiation antenna-transducer system

  • Published:
Il Nuovo Cimento B (1971-1996)

Summary

A noncontacting 10 GHz re-entrant cavity transducer, capable of detecting displacements of 10−15 cm per Hz1/2 in the kilohertz frequency range, has been used on a magnetically levitated niobium gravitational-radiation antenna at 4.2 K. This sensitivity corresponds to a system effective noise temperature of about 40 mK, which is significantly lower than previous systems operated to date.

Riassunto

Un transduttore a cavità rientrante a 10 GHz senza contatti, capace di determinare spostamenti di 10−15 cm per Hz1/2 nell’intervallo di frequenza dell’ordine del kHz, è stato usato su un’antenna gravitazionale al niobio magneticamente levitata a 4.2 K. Questa sensibilità corrisponde ad una temperatura di disturbo efficace del sistema di circa 40 mK, che è significativamente più bassa che in precedenti sistemi usati fino ad ora.

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Authors and Affiliations

  1. Physics Department, University of Western Australia, 6009, Nedlands, Western Australia

    D. G. Blair & A. G. Mann

Authors
  1. D. G. Blair
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  2. A. G. Mann
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Blair, D.G., Mann, A.G. Low-noise temperature gravitational-radiation antenna-transducer system. Nuov Cim B 61, 73–80 (1981). https://doi.org/10.1007/BF02721704

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  • DOI: https://doi.org/10.1007/BF02721704

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