Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 47: Hadron Structure and Spectroscopy 10

HK 47.4: Talk

Wednesday, March 25, 2015, 15:15–15:30, T/SR25

Geant 4 Monte Carlo simulation for the COMPASS-II experiment at CERN — •Christopher Regali, Fischer Horst, Matthias Gorzellik, Philipp Jörg, Kay Königsmann, Steffen Landgraf, Katharina Schmidt, Stefan Sirtl, Tobias Szameitat, and Johannes ter Wolbeek — for the COMPASS collaboration, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg

The COMPASS-II experiment at CERN/SPS is a multi purpose experiment for nucleon structure studies and hadron spectroscopy. It offers the unique possibility to measure exclusive processes like Hard Exclusive Meson Production and Deeply Virtual Compton Scattering with different beams over a wide kinematic range. Such processes will provide access to Generalized Parton Distributions (GPDs), which, as a theoretical framework, are particularly interesting, because they can give a dynamical insight into the nucleon. For future measurements a very precise understanding of the spectrometer acceptance is needed, as the measurement aims towards asymmetries in total cross sections. In order to accomplish this, a new Geant4 based simulation software was developed. This talk will give an overview of the project. Supported by BMBF, DFG and EU FP7 (Grant Agreement 283286).