Author: Cavalier, S.
Paper Title Page
TUPWO050 Commissioning and Operation at β* = 1000 m in the LHC 1982
 
  • H. Burkhardt, T. Persson, R. Tomás, J. Wenninger
    CERN, Geneva, Switzerland
  • S. Cavalier
    LAL, Orsay, France
 
  We have developed a special optics with a β* of 1000 m for two interaction regions (IR1 and IR5) in the LHC, to produce very low divergence beams required for elastic proton-proton scattering. We describe the design, commissioning and operation of this optics in the LHC. The β* of 1000 m was reached by de-squeezing the beams using 17 intermediate steps beyond the β* of 90 m, which had been the previous highest β* value reached in the LHC. The optics was measured and the beta beating globally corrected to a level of 10 per cent.