Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 47: Beschleunigerphysik VII (Strahldynamik/Simulation)
HK 47.4: Vortrag
Dienstag, 5. März 2013, 17:30–17:45, WIL-C203
Study on the 90m β* optics for the ALFA experiment at the LHC — •Andy Langner1,2 and Rogelio Tomás García1 — 1CERN, Geneva, Switzerland — 2University of Hamburg, Germany
The ALFA experiment, which is located at the ATLAS interaction region, measures elastic scattering at very small angles in order to determine the absolute luminosity at the interaction point (IP). For that purpose, Roman Pot detectors are positioned very close to the LHC beam. The Luminosity determination requires very accurate knowledge of the accelerator optics in between the IP and the Roman Pots. Phase advances and beta functions can be measured by exciting beam oscillations and recording the turn-by-turn data with beam position monitors. Monte-Carlo simulations will be presented, which have been used to combine these optics measurements with constraints from different techniques, in order to find uncertainties in the model parameters.