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  * Freight train: class 4 97 km/h (27 m/s), 3000 to 8000 to 13000 tons? 5000 tonnes at 25 m/s is 313 GJ

LHC

  • http://www.scienceinschool.org/2008/issue10/lhchow

  • 27 km long and 3.8 m wide tunnel about 100 m underground (4.3 km radius
  • Beam tube 6.3 cm diameter (2.5 inch is 6.35 cm)
  • 1e-13 bar
  • 3e14 protons per beams
  • Acceleration cavity 5 MV/m
  • The following numbers are inconsistent
    • 1e11 protons per bunch
    • two beams consists of 2800 discrete bunches, one every seven meters
    • After 20 minutes, they reach their final energy, while doing 11 245 circuits of the LHC ring per second.
    • 3e14 protons per beam
  • 0.999999991 c
  • 7 TeV
  • 1232 dipole magnets, 16 m long, 35 mt, 8.33 tesla maximum
  • -271.3°C (1.9K)
  • niobium/titanium
  • 4 crossing points (8 possible?)
    • CMS

    • beam dump
    • .

    • LHCb

    • ATLAS

    • ALICE

    • .

    • .

  • 20 particle collisions occur per bunch crossing
  • 600M collisions/s = 2800 bunches x 11 245 turns per second
  • 100 KJ/bunch
  • 315 MJ/beam
    • Freight train: class 4 97 km/h (27 m/s), 3000 to 8000 to 13000 tons? 5000 tonnes at 25 m/s is 313 GJ
  • bunches squeezed by special magnets to 16 µm diameter and 80 mm length
  • 15 petabytes annually

LHC (last edited 2019-01-03 21:52:59 by KeithLofstrom)