EXERGY ANALYSIS OF THE CRYOGENIC HELIUM DISTRIBUTION SYSTEM FOR THE LARGE HADRON COLLIDER (LHC)

Journal Article · Fri Apr 09 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3422294· OSTI ID:21371790

Claudet, S; Lebrun, Ph; Tavian, L; Wagner, U ^[1]

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1. CERN, CH-1211, Geneva, 23 (Switzerland)

The Large Hadron Collider (LHC) at CERN features the world's largest helium cryogenic system, spreading over the 26.7 km circumference of the superconducting accelerator. With a total equivalent capacity of 145 kW at 4.5 K including 18 kW at 1.8 K, the LHC refrigerators produce an unprecedented exergetic load, which must be distributed efficiently to the magnets in the tunnel over the 3.3 km length of each of the eight independent sectors of the machine. We recall the main features of the LHC cryogenic helium distribution system at different temperature levels and present its exergy analysis, thus enabling to qualify second-principle efficiency and identify main remaining sources of irreversibility.

• OSTI ID: 21371790
• Journal Information: AIP Conference Proceedings, Vol. 1218, Issue 1; Conference: International cryogenic materials conference (ICMC) on advances in cryogenic engineering materials, Tucson, AZ (United States), 28 Jun - 2 Jul 2009; Other Information: DOI: 10.1063/1.3422294; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
43 PARTICLE ACCELERATORS
CERN LHC
COOLING SYSTEMS
CRYOGENICS
EFFICIENCY
EXERGY
HELIUM
REFRIGERATION
REFRIGERATORS
SUPERCONDUCTING MAGNETS
TEMPERATURE RANGE 0000-0013 K
THERMODYNAMICS
ACCELERATORS
COOLING
CYCLIC ACCELERATORS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELEMENTS
ENERGY
ENERGY SYSTEMS
EQUIPMENT
FLUIDS
GASES
MAGNETS
NONMETALS
RARE GASES
STORAGE RINGS
SUPERCONDUCTING DEVICES
SYNCHROTRONS
TEMPERATURE RANGE