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Proceedings Paper

Advanced high-cooling power 2-stage Gifford-McMahon refrigerator systems
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Paper Abstract

This paper describes the development of high-cooling power systems by making use of multiple cold head operation with a minimized number of compressor units. These advanced cooling systems were investigated for optimization and their Carnot efficiencies were analyzed. Test series were performed to monitor and rank some of their critical operation parameters. Operating envelopes for different cold head / compressor configurations were defined for applications in various VLT instruments. This new concept of providing high pressure helium as a service point for a large number of detached cold heads is a first step towards a new cryogenic facility concept for the E-ELT.

Paper Details

Date Published: 22 July 2010
PDF: 12 pages
Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77393I (22 July 2010); doi: 10.1117/12.856231
Show Author Affiliations
Gerd Jakob, European Southern Observatory (Germany)
Jean-Louis Lizon, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 7739:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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