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Le cryostat Archeops : un réfrigérateur à dilution utilisé dans une expérience menée avec un ballon.

The Archeops cryostat: a dilution refrigerator for a balloon experiment.

Auteurs : MADET K., BENOIT A., GAUTIER B.

Résumé

The design of an open cycle dilution refrigerator able to reach a temperature of 0.1 K on a balloon-borne experiment is presented. It was used to cool down the bolometric detectors of the Archeops experiment dedicated to measuring the microwave background radiation anisotropies (observation at millimetre wavelength with a 1.5 m telescope). The system maintains the low temperature with a high temperature stability for a flight up to 48 hours. A liquid helium bath is used to cool down the radiation shields and the entrance window. The input gas used for the dilution are precooled on the helium bath and the output dilute mixture is stored in a charcoal pump. The authors present a technical description of this cryostat followed by its in-flight performance. A similar open cycle dilution system will be used on the Planck ESA satellite; it is dedicated to a higher resolution measurement of the microwave background radiation anisotropies.

Détails

  • Titre original : The Archeops cryostat: a dilution refrigerator for a balloon experiment.
  • Identifiant de la fiche : 2006-0023
  • Langues : Anglais
  • Source : Proceedings of the nineteenth International Cryogenic Engineering Conference. ICEC 19.
  • Date d'édition : 22/07/2002

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