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Design proposal for MITICA cryogenic plant.

Number: pap. n. 020

Author(s) : VALENTE M., FELLIN F., HAAS H., et al.

Summary

The MITICA Neutral Beam Injector, under construction in Padua at Consorzio RFX, will be equipped with a large cryosorption pump (composed by two halves). The cryopump, installed inside the MITICA Beam Line Vessel, will be supplied by a dedicated cryogenic plant with gaseous helium (GHe) at 80 K and supercritical helium (ScHe) at 4.6 K. The design proposal for MITICA cryogenic plant is described in this paper. The cryogenic plant is divided in two main closed circuits: the 4.6 K circuit and the 80 K circuit. The first one is supplied by a helium refrigerator via a LHe control cryostat acting as a thermal buffer due to the variable pulsed heat loads expected during MITICA operation. The second circuit is supplied by an 80 K facility where the refrigeration power is given by liquid nitrogen (LN2). Due to the expected large LN2 consumptions, a nitrogen refrigerator is foreseen to recover and re-liquefy the evaporated LN2.

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Pages: 34-39

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Details

  • Original title: Design proposal for MITICA cryogenic plant.
  • Record ID : 30005405
  • Languages: English
  • Source: Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Publication date: 2012/09/11

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