330 MHz SQUID amplifier coupled to a capacitive transducer for gravitational wave experiments

✍ Scribed by M. Cerdonio; G. Fontana; L. Franceschini; R. Macchietto; R. Mezzena; S. Vitale; J.P. Zendri

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 161 KB
• Volume: 194-196
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)90366-2

✦ Synopsis

A low noise high frequency r.f. SQUID is used for detecting the current flowing in a superconducting inductance coupled to a capacitive resonant displacement-voltage transducer. The SQUID output power spectrum for the whole system shows a noise performance only a factor two worse than in the uncoupled configuration. An upper limit for the predicted SQUID negative resistance has been found.