LHC Parameters

Taking a closer look at LHC

Many of the values and parameters below are explained in more detail in the section Physics at LHC.

Some of the more important parameters.

  • Particles used: Protons (in proton- proton collisions) and heavy ions (Lead 82+)
  • Circumference: 26659 m.
  • Injected beam energy: 450 GeV (protons)
  • Nominal beam energy in physics: 7 TeV (protons)
  • Magnetic field at 7 TeV: 8.33 Tesla
  • Operating temperature: 1.9 K
  • Number of magnets: ~9300
  • Number of main dipoles: 1232
  • Number of quadrupoles: 858
  • Number of correcting magnets: 6208
  • Number of RF cavities: 8 per beam; Field strength at top energy ≈ 5 MV/m
  • RF frequency: 400 MHz
  • Revolution frequency: 11.245 kHz.
  • Power consumption: ~180 MW
  • Gradient of the tunnel: 1.4%
  • Difference between highest and lowest points: 122 m.

The values presented here are essentially what the machine presents, but repairs, improvements and upgrades during long shutdown (LS) cause some of them to vary slightly.

See more data... 


Xabier Cid Vidal, PhD in experimental Particle Physics for Santiago University (USC). Research Fellow in experimental Particle Physics at CERN from January 2013 to Decembre 2015. He was until 2022 linked to the Department of Particle Physics of the USC as a "Juan de La Cierva", "Ramon y Cajal" fellow (Spanish Postdoctoral Senior Grants), and Associate Professor. Since 2023 is Senior Lecturer in that Department.(ORCID).

Ramon Cid Manzano, until his retirement in 2020 was secondary school Physics Teacher at IES de SAR (Santiago - Spain), and part-time Lecturer (Profesor Asociado) in Faculty of Education at the University of Santiago (Spain). He has a Degree in Physics and a Degree in Chemistry, and he is PhD for Santiago University (USC) (ORCID).



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Detector LHCf

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 For the bibliography used when writing this Section please go to the References Section

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