Cool-down of the first sector of the Large Hadron Collider: Comparison between mathematical model and measurements

Dec, 2007
8 pages
Published in:
  • AIP Conf.Proc. 985 (2008) 1, 1395-1402
Contribution to:
  • Published: Mar 27, 2008

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Abstract: (AIP)
The first 3.3-km long LHC sector (sector 7–8) was cooled down for the first time from room temperature to below 2.0 K from January to March, 2007. In this paper, the measured cool-down evolution of the sector is presented and compared with the calculated results. The discrepancies between the measured and calculated data are analyzed. In addition, two unexpected phenomena, unbalanced cool-down between two neighboring cells supplied by one valve and longer cool-down time with respect to the predicted generic cool-down are thoroughly and numerically analyzed.
  • particle accelerators
  • LHC
  • cool-down
  • superconducting magnet
  • helium cryogenics
  • cryogenics
  • superconducting magnets
  • Large Hadron Collider
  • Data analysis
  • Numerical analysis
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