A Helium Cryostat for Investigating the Properties of Massive Solid Resonators with Deep Cooling
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A helium cryostat for investigating the properties of massive solid acoustic and optical resonators (of the order of tens of kilograms) for cooling to helium temperatures is modernized and tested. A complete cycle of cooling from room temperature to nitrogen and helium temperatures is carried out. The dynamics of the acoustic characteristics of the model of a gravitational detector at different stages of cooling is tracked. The operating parameters of the new cryostat (the heat inflow and the consumption of coolant) are investigated. Optical inputs were mounted for cryogenic investigations of models with cryogenic mirrors.
Keywordsacoustic and optical resonators cryostat test body gravitational detector low-temperature measurements acoustic oscillations
This research was supported by a grant from Russian Foundation for Basic Research, 11-02-12030 OFI-m.
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