Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Instrumentierung VIII

HK 46.5: Vortrag

Mittwoch, 23. März 2011, 18:00–18:15, HS1

Simulation of the BGO-OD experiment at ELSA — •Russell Johnstone — The University of Bonn, Physikalisches Institut, Bonn, Germany

The goal of the BGO Open-Dipole (BGO-OD) project is the systematic investigation of the photoproduction of mesons off the nucleon. These processes are related to the structure of both the mesons and the baryons involved in reactions typical of low-energy hadronic physics. In order to fully understand and accurately interpret the results of the BGO-OD experiment it will be necessary to have a full detector and reaction simulation so that effects from detector resolution and acceptance can be accounted for in the final results.

The simulation of the BGO-OD will be be undertaken with the Explora Virtual Monte-Carlo (VMC) software framework [1]. This allows for one common user code to be implemented under Geant4, Geant3 and Fluka. The simulation software is also an analysis tool and such flexibility will be key to an efficient final analysis of the data from the BGO-OD experiment.

Presented here will be current status of the simulation software if the BGO-OD project and the relevant geometry of the BGO-OD, including the central BGO rugby ball detector with the dual-layer Multiwire Proportional Chambers (MWPCs) and the forward spectrometer, consisting of a large dipole magnet, tracking detectors and the Time-of-Flight walls. Simulation of the magnetic field will also be covered.

[1] Ch. Schmidt et al, The explora analysis software, CB-Note (in preparation), CBELSA/TAPS-Collaboration.