Computer Calculations on Steady-State Operation and Different Modes of Cool Down and Warm Up of the HERA Superconducting Proton Ring

  • G. Horlitz
  • H. Lierl
  • P. Schmüser
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 31)


The HERA superconducting proton ring contains 422 dipoles, 224 quadrupoles and about 650 correction magnets which are also superconducting. The coils are cooled by single-phase helium in forced flow which is in thermal contact with two-phase helium in counterflow. The total mass to be cooled to liquid helium temperature amounts to about 3.9 × 106 kg. Calculations on steady-state operation and on two methods of cool down and warm up of the magnet system are presented.


Helium Temperature Half Cell Beam Pipe Heat Exchange Coefficient Magnet Chain 
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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • G. Horlitz
    • 1
  • H. Lierl
    • 1
  • P. Schmüser
    • 2
  1. 1.Deutsches Elektronen-Synchrotron DESYGermany
  2. 2.II. Institut für ExperimentalphysikUniversity of HamburgGermany

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