A He II-Cryostat for the Far Infrared and Submillimetre Space Telescope

Paper #:
  • 951719

Published:
  • 1995-07-01
Citation:
Paßvogel, T. and Seidel, A., "A He II-Cryostat for the Far Infrared and Submillimetre Space Telescope," SAE Technical Paper 951719, 1995, https://doi.org/10.4271/951719.
Pages:
12
Abstract:
The Far Infrared and Submillimetre Space Telescope is one of ESA's cornerstone missions in the “horizon 2000” programme. One option to cool the scientific instruments of this satellite is a superfluid helium (He II) cryostat. A trade-off analysis was performed about different sizes and configurations of a cryostat such as to meet the operational lifetime requirement of 2 - 4 years on either a highly elliptical 24 hours orbit or on a far-away from earth orbit. The possible size alternatives for a cryostat using to a maximum extent existing ISO-technology are presented. Upon ESA-decision a final cryostat size for the 24 hours orbit which provides at least 3 years operational lifetime was selected. This cryostat is described and presented.
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