TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
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Volume 49, Issue 12
Displaying 1-3 of 3 articles from this issue
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Preface
Focused Review
  • The LHC Cryogenic System and Operational Experience from the First Three Years Run
    Dimitri DELIKARIS, Laurent TAVIAN
    2014 Volume 49 Issue 12 Pages 590-600
    Published: December 25, 2014
    Released on J-STAGE: January 23, 2015
    DOIhttps://doi.org/10.2221/jcsj.49.590
    JOURNAL FREE ACCESS
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    The LHC (Large Hadron Collider) accelerator helium cryogenic system consists of eight cryogenically independent sectors, each 3.3 km long, all cooled and operated at 1.9 K. The overall, entropy equivalent, installed cryogenic capacity totalizes 144 kW @ 4.5 K including 19.2 kW @ 1.8 K with an associated helium inventory of 130 ton. The LHC cryogenic system is considered among the most complex and powerful in the world allowing the cooling down to superfluid helium temperature of 1.9 K. of the accelerators' high field superconducting magnets distributed over the 26.7 km underground ring. The present article describes the LHC cryogenic system and its associated cryogen infrastructure. Operational experience, including cryogen management, acquired from the first three years of LHC operation is finally presented.
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