Frankfurt 2014 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Poster

HK 46.3: Poster

Thursday, March 20, 2014, 16:00–18:00, HZ Poster

A Geant4 based MC simulation for the COMPASS-II experiment at CERN — •Tobias Szameitat, Horst Fischer, Matthias Gorzellik, Arne Groß, Philipp Jörg, Kay Königsmann, Christopher Regali, Katharina Schmidt, Stefan Sirtl, and Johannes ter Wolbeek — for the COMPASS collaboration, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg

The COMPASS-II experiment at CERN is a fixed-target experiment for the investigation of the spin structure of the nucleon and for hadron spectroscopy. The theoretical framework of Generalized Parton Distributions (GPDs) provides a dynamical and geometrical picture of the nucleon. Experimentally the GPDs can be accessed in exclusive measurements such as Hard Exclusive Meson Production and Deeply Virtual Compton Scattering. Built as a multi-purpose two stage spectrometer, the COMPASS-II experiment allows for measurements of such exclusive reactions. For a detailed understanding of the spectrometer acceptance a new Geant4 based simulation tool has been developed. We report on the key features of the software including its different detector geometries and its event simulation. Supported by BMBF, DFG and EU FP7 (Grant Agreement 283286).