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Status and recent development of the nitrogen cryogenic system for the NICA accelerator complex at JINR.

Number: pap. n. 248

Author(s) : MITROFANOVA I., AGAPOV N., EMELIANOV N., et al.

Summary

The new NICA (Nuclotron-based Ion Collider fAcility) accelerator complex is scheduled to be put into operation in 2019 at JINR in Dubna. This facility comprising the existing Nuclotron together with two newly created superconducting accelerators – booster and collider – will require additional refrigeration capacity at 4.5 K and 77 K. The helium cryogenic system of the NICA complex will be created as a result of the modernization of the existing equipment for cryogenic supply of the Nuclotron, but the liquid nitrogen plant will be completely new. It will be based on a 1300 kg/h nitrogen liquefier and two 500 kg/h re-condensers of nitrogen vapor. This report describes the schematic diagram of the system of liquid nitrogen that will be used for shield refrigerating at 77 K and at the first stage of cooling down three accelerator rings with the total length of about 1 km and the “cold” mass of 290 tons. We demonstrate the status and recent development of the nitrogen cryogenic system: location, basic parameters and design of major components and discuss their phased commissioning.

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Pages: 8 p.

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Details

  • Original title: Status and recent development of the nitrogen cryogenic system for the NICA accelerator complex at JINR.
  • Record ID : 30015993
  • Languages: English
  • Subject: General information
  • Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Publication date: 2015/08/16
  • DOI: http://dx.doi.org/10.18462/iir.icr.2015.0248

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