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LHC Optics Measurement with Proton Tracks Detected by the Roman Pots of the TOTEM Experiment

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arxiv 1406.0546 v1 pith:NIQS3ZLY submitted 2014-06-02 physics.acc-ph hep-ex

LHC Optics Measurement with Proton Tracks Detected by the Roman Pots of the TOTEM Experiment

classification physics.acc-ph hep-ex
keywords opticsexperimentprotonsdetectedmethodpotspreciseproton
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Precise knowledge of the beam optics at the LHC is crucial to fulfil the physics goals of the TOTEM experiment, where the kinematics of the scattered protons is reconstructed with the near-beam telescopes -- so-called Roman Pots (RP). Before being detected, the protons' trajectories are influenced by the magnetic fields of the accelerator lattice. Thus precise understanding of the proton transport is of key importance for the experiment. A novel method of optics evaluation is proposed which exploits kinematical distributions of elastically scattered protons observed in the RPs. Theoretical predictions, as well as Monte Carlo studies, show that the residual uncertainty of this optics estimation method is smaller than 0.25 percent.

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