9 July 2008 Gemini helium closed cycle cooling system
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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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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, "Gemini helium closed cycle cooling system", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70147G (9 July 2008); doi: 10.1117/12.787736; https://doi.org/10.1117/12.787736
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