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Proceedings Paper

Gemini helium closed cycle cooling system
Author(s): Manuel Lazo; Ramon Galvez; Rolando Rogers; Hernan Solis; Eduardo Tapia; Diego Maltes; Paul Collins; John White; Chas Cavedoni; Chris Yamasaki; Michael P. Sheehan; Brian Walls
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Paper Abstract

The Gemini Observatory presents the Helium Closed Cycle Cooling System that provides cooling capacity at cryogenic temperatures for instruments and detectors. It is implemented by running three independent helium closed cycle cooling circuits with several banks of compressors in parallel to continuously supply high purity helium gas to cryocoolers located about 100-120 meters apart. This poster describes how the system has been implemented, the required helium pressures and gas flow to reach cryogenic temperature, the performance it has achieved, the helium compressors and cryocoolers in use and the level of vibration the cryocoolers produce in the telescope environment. The poster also describes the new technology for cryocoolers that Gemini is considering in the development of new instruments.

Paper Details

Date Published: 9 July 2008
PDF: 10 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70147G (9 July 2008); doi: 10.1117/12.787736
Show Author Affiliations
Manuel Lazo, Gemini Observatory, Southern Operation Ctr. (Chile)
Ramon Galvez, Gemini Observatory, Southern Operation Ctr. (Chile)
Rolando Rogers, Gemini Observatory, Southern Operation Ctr. (Chile)
Hernan Solis, Gemini Observatory, Southern Operation Ctr. (Chile)
Eduardo Tapia, Gemini Observatory, Southern Operation Ctr. (Chile)
Diego Maltes, Gemini Observatory, Southern Operation Ctr. (Chile)
Paul Collins, Gemini Observatory, Southern Operation Ctr. (Chile)
John White, Gemini Observatory, Northern Operation Ctr. (United States)
Chas Cavedoni, Gemini Observatory, Northern Operation Ctr. (United States)
Chris Yamasaki, Gemini Observatory, Northern Operation Ctr. (United States)
Michael P. Sheehan, Gemini Observatory, Northern Operation Ctr. (United States)
Brian Walls, Gemini Observatory, Northern Operation Ctr. (United States)


Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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