Abstract
Under contract with the Jet Propulsion Laboratory (Advanced Cryocooler Technology Development Program), Lockheed Martin’s Advanced Technology Center (LM-ATC) is developing a four-stage pulse tube cryocooler and electronic controller to provide simultaneous cooling at 6 K and 18 K. LM-ATC successfully completed the design phase of the program, where a robust, simple pulse tube cryocooler system was designed to meet JPL’s cryocooler needs. The simplicity of LM-ATC s approach, with a single compressor, coldhead and electronic controller, makes it very appealing for the large observatories (Constellation-X, Terrestrial Planet Finder, and the James Webb Space Telescope) that require high reliability.
The cryocooler is designed simultaneously to provide 20 mW of cooling at 6 K and 150 mW cooling at 18 K while conductively rejecting heat at 290K. The Lockheed Martin pulse tube is a simple four-stage coldhead with no moving parts, driven by a linear flexure-bearing compressor, powered by a high-efficiency electronic controller. The controller provides simultaneous temperature control at both 6 K and 18 K, vibration cancellation, and bus current ripple suppression.
This paper summarizes the characteristics of the system and the status of the program.
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References
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© 2005 Springer Science+Business Media, Inc.
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Olson, J. et al. (2005). Lockheed Martin 6K/18K Cryocooler. In: Ross, R.G. (eds) Cryocoolers 13. Springer, Boston, MA. https://doi.org/10.1007/0-387-27533-9_4
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DOI: https://doi.org/10.1007/0-387-27533-9_4
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-23901-9
Online ISBN: 978-0-387-27533-8
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