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Status of the cryogenic system for the ARIEL e-linac at TRIUMF.

Number: pap. n. 090

Author(s) : SITNIKOV A., BYLINSKII I., KOSCIELNIAK S., et al.

Summary

A new cryogenic system will be installed at TRIUMF to supply liquid helium (LHe) for three accelerator cryomodules containing superconducting radio frequency (SRF) cavities operating at 2 Kelvin. The system is a part of the ARIEL e-linac particle accelerator project. The cryogenic plant is designed to provide LHe at maximum liquefaction performance of 288 l/h at 4.6 K into a supply Dewar. The transition from helium I to helium II below Lambda point (? ~ 2.17 K) occurs inside each cryomodule via Joule-Thomson expansion to sub-atmospheric pressure. The operational objective is 24/7 continuous supply of LHe during eleven months per year. This paper outlines our strategy on the configuration of the cryogenic system for different scenarios of operation and the challenges these pose; as well as the technical solutions adopted. A key ingredient for operational longevity is control of helium purity, and the gas management system is described. The paper concludes with a description of the ARIEL e-linac project status, focusing particularly on the cryogenic equipment procurement and the civil construction for the new compressor building.

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Pages: 390-395

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Details

  • Original title: Status of the cryogenic system for the ARIEL e-linac at TRIUMF.
  • Record ID : 30006968
  • 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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