A 15 μK noise temperature SQUID amplifier for ultracryogenic gravitational wave detectors

Details A 15 μK noise temperature SQUID amplifier for ultracryogenic gravitational wave detectors A 15 μK noise temperature SQUID amplifier for ultracryogenic gravitational wave detectors

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..605..329f&link_type=abstract

LOW TEMPERATURE DETECTORS: Ninth International Workshop on Low Temperature Detectors. AIP Conference Proceedings, Volume 605, p

Physics

Superconducting Quantum Interference Devices, Gravitational Wave Detectors And Experiments

Scientific paper

A two-stage SQUID (Superconducting QUantum Interference Device) amplifier based on a modified commercial sensor is operated strongly coupled to an electrical resonator which simulates, as regards resonance frequency (≅1 kHz) and quality factor (≅106), the load of one of the mechanical modes of a resonant cryogenic gravitational wave detector. The behavior of the system is stable and, in the temperature range 1.5-4.2 K, the noise of the resonator is in agreement with the equipartition theorem. Thanks to the very high quality factor it is possible to evaluate the back action noise of the SQUID amplifier which is found to be thermal and in agreement with the theory. The open input broadband noise is also thermal and in agreement with the theory down to 300 mK and levels off to a constant value which corresponds to 35 h at lower temperatures. The noise temperature of the SQUID amplifier, obtained from the broadband and back action noise measurements, is 15 μK at 1.5 K. On the basis of these results the operation of a resonant gravitational wave detector with an amplifier with an energy sensitivity better than 100 h seems achievable. .

Affiliated with

Also associated with

No associations

Rating

A 15 μK noise temperature SQUID amplifier for ultracryogenic gravitational wave detectors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A 15 μK noise temperature SQUID amplifier for ultracryogenic gravitational wave detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A 15 μK noise temperature SQUID amplifier for ultracryogenic gravitational wave detectors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1791319