A Low-Noise Low-Input Conductance Preamplifier for Gravitational Research
- 1 December 1985
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. IM-34 (4), 676-680
- https://doi.org/10.1109/tim.1985.4315433
Abstract
We report on the specification, the design, and the characterization of a FET-input low-noise preamplifier with low-input conductance that has been developed for gravitational-wave research. At approximately 900 Hz the noise temperature of the preamplifier is 69 mK and its input conductance is ~ -2 nS. This preamplifier has recently been used during the first cooling to liquid helium of a 2.2-ton gravitational-wave antenna equipped with a capacitive resonant transducer.Keywords
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