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Seventh European Particle Accelerator Conference, EPAC 2000, Vienna : Autriche (2000)
Precise measurement of the total cross section and the Coulomb scattering at the LHC
A. Faus-Golfe1, M. Haguenauer2, J. Velasco1

A precise measurement of the total cross section and the coulomb scattering at the LHC requires the observation of elastically scatteredparticles at extremely small angles (14 microrad, -t < 0.01 GeV**2 for the first case; 3 microrad, -t<0.0006 GeV**2 for the second one). In this paper a very high-beta insertion optics is presented. A feasibility study, including the acceptance of the detectors, for an experiment to be installed in IR1 or IR5, is also presented.
1 :  IFIC - Instituto de Fisica Corpuscular
2 :  LLR - Laboratoire Leprince-Ringuet
Physique/Physique des Hautes Energies - Expérience
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