HC optics measurement with proton tracks detected by the Roman pots of the TOTEM experiment

0440194 - FZÚ 2015 RIV DE eng J - Journal Article
Antchev, G. - Aspell, P. - Atanassov, I. - Kašpar, Jan - Kopal, Josef - Kundrát, Vojtěch - Lokajíček st., Miloš - Procházka, Jiří … Total 78 authors
HC optics measurement with proton tracks detected by the Roman pots of the TOTEM experiment.
New Journal of Physics. Roč. 16, Oct (2014), 1-5. ISSN 1367-2630. E-ISSN 1367-2630
R&D Projects: GA MŠMT(CZ) LG13031
Institutional support: RVO:68378271
Keywords : elastic scattering * LHC proton transport * Roman pot * TOTEM experiment
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 3.558, year: 2014

Precise knowledge of the beam optics at the LHC is crucial to fulfill the physics goals of the TOTEM experiment, where the kinematics of the scattered protons is reconstructed with 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 the optics estimation method is smaller than 2.5 per mille.
Permanent Link: http://hdl.handle.net/11104/0243321