The LSST camera 500-watt -130°C mixed refrigerant cooling system | Zendy

Gordon Bowden | Zendy; Brian J. Langton | Zendy; W. A. Little | Zendy; Jacob R. Powers | Zendy; Rafe Schindler | Zendy; Sam Spektor | Zendy

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The LSST camera 500-watt -130°C mixed refrigerant cooling system

Author(s) -

Gordon Bowden,

Brian J. Langton,

W. A. Little,

Jacob R. Powers,

Rafe Schindler,

Sam Spektor

Publication year - 2014

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.2054990

Subject(s) - watt , refrigerant , computer science , environmental science , electrical engineering , automotive engineering , engineering , mechanical engineering , physics , power (physics) , thermodynamics , heat exchanger

The LSST Camera has a higher cryogenic heat load than previous CCD telescope cameras due to its large size (634 mm diameter focal plane, 3.2 Giga pixels) and its close coupled front-end electronics operating at low temperature inside the cryostat. Various refrigeration technologies are considered for this telescope/camera environment. MMR-Technology’s Mixed Refrigerant technology was chosen. A collaboration with that company was started in 2009. The system, based on a cluster of Joule-Thomson refrigerators running a special blend of mixed refrigerants is described. Both the advantages and problems of applying this technology to telescope camera refrigeration are discussed. Test results from a prototype refrigerator running in a realistic telescope configuration are reported. Current and future stages of the development program are described.

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