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The FIRST and Planck "Carrier" missions: description of the cryogenic systems.

Author(s) : COLLAUDIN B., PASSVOGEL T.

Type of article: Article

Summary

ESA has investigated the possibility of merging two of the next scientific missions of its HORIZON 2000 Programme, the fourth cornerstone mission, the Far InfraRed and Sub-millimetre Telescope (FIRST) and the third Medium-sized Mission M3, Planck (formerly Cobras/Sama). The two missions will be implemented in the so-called "Carrier" solution. Both satellites will be designed and launched together, and then will be separated. The cryogenic system of FIRST is based on a Superfluid Helium Dewar at 1.65 K (Infrared Space Observatory, ISO technology) with a design lifetime of more than 3 years. The very low temperature (0.3 K), required in the bolometer instrument will be obtained from a dedicated helium 3-sorption cooler. The cryogenic system of Planck uses a sequence of passive radiator (60 K), helium 2 Joule-Thomson (JT) sorption cooler (20 K), JT mechanical cooler (4 K), and dilution refrigerator (0.1 K).

Details

  • Original title: The FIRST and Planck "Carrier" missions: description of the cryogenic systems.
  • Record ID : 2000-2333
  • Languages: English
  • Source: Cryogenics - vol. 39 - n. 2
  • Publication date: 1999/02

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