Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 11: Instrumentation

HK 11.9: Talk

Monday, March 19, 2012, 18:45–19:00, P 2

Results on the CBM TRD prototype performance from the test beam time at CERN-PS — •Andreas Arend — Institut für Kernphysik, Goethe University Frankfurt, Germany

The development of a Transition Radiation Detector (TRD) for the Compressed Baryonic Matter (CBM) Experiment at the future FAIR facility is aimed to provide good electron-pion-separation and tracking capabilities in an environment of unprecedented high particle fluxes.

In this talk, an approach to employ thin and fast Multi-Wire Proportional Chambers (MWPC) without drift region to fulfill the given requirements will be presented. Several prototypes with different wire geometries and a variety of radiator types, such as regular foil stack radiators, a foam based radiator and a fiber radiator have been developed and constructed. Measurements with different MWPC and radiator combinations have been performed during the test beam campaign at the CERN-PS in October 2011. Results for the CBM-TRD prototypes will be presented. The electron-pion-separation capabilities for different radiator types will be discussed as well as its dependency on the geometry of the MWPC.