ShareClosed cycle cooling of infrared detectors to 250 mK.
Author(s) : BHATIA R. S., CHASE S. T., JONES W. C., et al.
Type of article: Article
Summary
The authors designed and built a cryogenic system which uses no expendable liquid cryogens and consists of a three-stage cryocooler together with a three-stage sorption cooler to achieve a base temperature of 239 mK. They achieved a temperature of 250 mK at the expected 0.5 µW loading. The duty cycle of the sorption cooler alone was 93%. The cryogenic system was designed for autonomous cycling and operation, and will be used to cool the detectors and optics on the Polatron instrument to observe the 2.7 K cosmic microwave background.
Details
- Original title: Closed cycle cooling of infrared detectors to 250 mK.
- Record ID : 2004-0011
- Languages: English
- Source: Cryogenics - vol. 42 - n. 2
- Publication date: 2002/02
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