Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 61: Hadronenstruktur und -spektroskopie
HK 61.2: Vortrag
Freitag, 23. März 2012, 14:30–14:45, RW 1
Luminosity determination at COMPASS — •Nicolas du Fresne von Hohenesche — for the COMPASS collaboration - Institut für Kernphysik der Johannes Gutenberg-Universität Mainz and CERN
In 2009, a Deep Virtual Compton Scattering test run with a 160 GeV muon beam impinging on a liquid hydrogen target was performed at the COMPASS experiment at CERN. The data were acquired using a system of inclusive muon triggers, consisting of scintillator hodoscopes.
As a first step of the analysis the inclusive cross section will be extracted. To achieve this aim, the luminosity is needed which is proportional to the beam flux in a fixed-target experiment. The flux is determined by two methodes: counting tracks using a random trigger or using the Scaler information of the scintillating fibre station in the beam telescope of the experiment. By calculating the cross section for Deep Inelastic Scattering and the structure function F2p, the results will be cross checked with results from NMC which cover a similar kinematic range.