Q-factor of acoustic modes of a solid-state resonator at low temperatures

• Published in: Measurement techniques Vol. 54; no. 1; pp. 86 - 90
• Main Authors: Amamchyan, R. G., Motylev, A. M., Krysanov, V. A., Oreshkin, S. I., Rudenko, V. N., Tsepkov, A. N.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.04.2011; Springer; Springer Nature B.V
• Subjects: Acoustic Measurements; Acoustic properties; Acoustics; Alloys; Aluminum alloys; Analysis; Analytical Chemistry; Atmospheric pressure; Characterization and Evaluation of Materials; Cooling; Detectors; Gravity; Heat; Helium; Insulation; Measurement Science and Instrumentation; Measurement techniques; Nitrogen; Physical Chemistry; Physics; Physics and Astronomy; Radiation; Sensors; Studies; Temperature; Wire; low-temperature measurements; gravity detector; acoustic oscillations
• ISSN: 0543-1972; 1573-8906
• DOI: 10.1007/s11018-011-9689-9

The acoustic characteristics of a cylindrical sample made of an aluminum alloy (model of gravity detector) in the course of cooling to temperatures on the order of the boiling point of liquid helium are studied. A specialized cryostat with working chamber having a large volume is presented. The technique and results of measurements of the Q-factor of the longitudinal modes of a model weighing 8 kg are described. The results are extrapolated to a cryogenic variant of the OGRAN large-scale (2.3 tons) gravity detector.