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

Number: 0016

Author(s) : SANTIAGO KERN R., THERMEAU J. P., LHOMME C., BUJARD P., KOCHEBINA O., ERIKSSON J., GAJEWSKI K., HERMANSSON L., PEPITONE K., RUBER R.

Summary

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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Details

  • Original title: The first tests on the vertical cryostat Gersemi with the liquid insert at FREIA laboratory.
  • Record ID : 30029009
  • Languages: English
  • Source: Cryogenics 2021 online. Proceedings of the 16th IIR International Conference, October 5-7, 2021.
  • Publication date: 2021/10/05
  • DOI: http://dx.doi.org/10.18462/iir.cryo.2021.0016
  • Document available for consultation in the library of the IIR headquarters only.

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