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The Cryogenics group is working on the cryogenic system for the Reuven Ramaty High Energy Solar Specrtroscopic Imager (RHESSI) satellite. The cooling will be provided by an M77 Cryocooler, built by Sunpower.

For more information on HESSI, see:

• Goddard HESSI Website
• Berkeley HESSI Website (Not a NASA site)

• Cryogenics & Fluids Home Page
• Site Map
• Books about Cryogenics
• Introduction to Cryogenics
• How to contact us

Curator: Brent Warner NASA Official: Susan R. Breon Last Updated: November 4, 2004