1. First coincidence experiments between cryogenic resonant-mass gravitational-wave detectors. 2. Development of a thin-film superconducting transducer for a gravitational-wave antenna
This dissertation is concerned with two aspects of detecting gravitational radiation from astrophysical sources. First, the data collection and analysis for a coincidence experiment conducted in 1986 using gravitational wave detectors operated by Stanford University, the university of Rome, and Louisiana State University are described. This experiment was important for several reasons: (1) it was the first coincidence experiment between cryogenic resonant-mass detectors; (2) it improved the observational upper limit on the flux of impulsive gravitational waves that impinge upon the earth; and (3) it lead to the development of a data analysis method for converting the experimental results into an astrophysically meaningful limit on the flux of gravitational radiation from impulsive events. Second, the development of a superconducting thin-film motion transducer intended for use on an ultra-low temperature detector now under construction is described. The sensitivity goal is h = 1 {times} 10{sup {minus}20}. To reach this goal the physical temperature of the detector will be lowered to 40 mK, a lower-noise SQUID amplifier will be used, and a new motion transducer will be developed.
- Research Organization:
- Stanford Univ., CA (United States)
- OSTI ID:
- 5231968
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
657003 -- Theoretical & Mathematical Physics-- Relativity & Gravitation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
DESIGN
ELECTRONIC EQUIPMENT
EQUIPMENT
FILMS
FLUXMETERS
GRAVITATIONAL WAVE DETECTORS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NOISE
RADIATION DETECTORS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
TRANSDUCERS