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Les premiers essais sur le cryostat vertical Gersemi avec l’insert liquide au laboratoire FREIA.

The first tests on the vertical cryostat Gersemi with the liquid insert at FREIA laboratory.

Résumé

A new vertical cryostat, called Gersemi, installed at FREIA Laboratory at Uppsala University, Sweden, is designed to test superconducting magnets and radio-frequency cavities and operates at temperatures between 1.8 K and 4.2 K. Two different inserts can be used to test different superconducting equipment: a helium saturated bath insert for cavities without a helium vessel and a lambda-plate insert for magnet testing in superfluid helium pressurized bath. The cold vessel cryostat has an internal diameter of 1.1 m and a useful height of 3.5 m. A valve box supplies the cryostat with the cryogens (liquid nitrogen, liquid helium, supercritical helium) and is linked to a return gas reheater. The last one is connected to a helium recovery circuit and to a helium pumping system (4.5 g/s at 16 mbar). The Gersemi vertical cryostat is a part of FREIA cryogenic facility which also contains a helium liquefier and the HNOSS horizontal cryostat inside of a bunker allowing the test of superconducting cavities and cryomodules. The first results of the cryogenic tests on the bath insert are reported.

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Pages : 6

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Détails

  • Titre original : The first tests on the vertical cryostat Gersemi with the liquid insert at FREIA laboratory.
  • Identifiant de la fiche : 30029009
  • Langues : Anglais
  • Source : Cryogenics 2021 online. Proceedings of the 16th IIR International Conference, October 5-7, 2021.
  • Date d'édition : 05/10/2021
  • DOI : http://dx.doi.org/10.18462/iir.cryo.2021.0016
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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