ShareCLOSED CYCLE REFRIGERATOR FOR SUPERCONDUCTING MILLIMETER WAVE-MIXERS.
Author(s) : HILBERATH W., VOWINKEL B.
Type of article: Article
Summary
THE AUTHORS DESCRIBE THE CONSTRUCTION AND OPERATION OF A CLOSED CYCLE REFRIGERATOR WITH AN OPERATING TEMPERATURE OF 2.8 K. HELIUM GAS AT A PRESSURE OF 1.2 MEGAPASCAL IS PRECOOLED TO 18 K BY A STIRLING REFRIGERATOR AND EXPANDED IN A JOULE-THOMSON STAGE TO ABOUT 10 KILOPASCALS. A VACUUM PUMP CIRCUIT AND COMPRESSOR BRING THE GAS BACK TO ITS ORIGINAL PRESSURE. THE REFRIGERATOR IS DESIGNED TO COOL THE FIRST STAGES OF A RADIO ASTRONOMICAL RECEIVER WITH A SUPERCONDUCTING MIXER. IT FITS INTO A SMALL RADIO TELESCOPE AND WORKS WIDELY INDEPENDENT OF ORIENTATION.
Details
- Original title: CLOSED CYCLE REFRIGERATOR FOR SUPERCONDUCTING MILLIMETER WAVE-MIXERS.
- Record ID : 1986-1334
- Languages: English
- Source: Cryogenics - vol. 25 - n. 10
- Publication date: 1985
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Indexing
- Themes: Small-scale cryogenic applications, cryocoolers
- Keywords: Joule-Thomson; Cryogenerator; Design; Superconductor; Stirling; Space; Cryocooler
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- Source: Indian J. Cryog. - vol. 9 - n. 3
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- Source: Cryogenics - vol. 45 - n. 7
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- Source: Cryogenics and refrigeration. Proceedings of ICCR 2003.
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