Performance of RHIC 50 Watt Recoolers

  • A. Nicoletti
  • M. Iarocci
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

Brookhaven National Laboratory has designed and tested cryogenic heat exchangers for use in the Relativistic Heavy Ion Collider (RHIC). These units, called recoolers, are located periodically in the superconducting magnet string and maintain the accelerator at design temperature by removing heat from the closed Helium circulating loop. Each is required to transfer 50 Watts from supercritical Helium, nominally flowing at 100 g/s to a Helium bath boiling at 4.25 K. With a 50 Watt heat load applied, there is a.028 K differential temperature between the Helium exiting the recooler and the recooler bath, and a heat exchange effectiveness of approximately 80%. The recoolers met design requirements during first article testing and then during the RHIC first sextant test. This paper describes the design and testing of the recoolers as well as their performance during the RHIC first sextant test.

Keywords

Helium Epoxy Boiling Calorimeter 

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References

  1. 1.
    Nicoletti, A. and Wu, K.C., Testing of a Cryogenic Recooler Heat Exchanger at Brookhaven National Laboratory, Advances in Cryogenic Engineering. Vol. 39 (1993)Google Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • A. Nicoletti
    • 1
  • M. Iarocci
    • 1
  1. 1.Cryogenic Systems Group, Relativistic Heavy Ion ColliderBrookhaven National LaboratoryUptonUSA

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