Gießen 2007 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Instrumentation und Anwendungen

HK 16.8: Vortrag

Dienstag, 13. März 2007, 16:00–16:15, B

Performance of high-rate TRD Prototypes in Test Beams for the CBM Experiment at FAIR — •Melanie Klein-Bösing for the CBM collaboration — Institut für Kernphysik, Münster

The CBM collaboration proposes to build a dedicated heavy-ion experiment to investigate the properties of highly compressed baryonic matter produced in nucleus-nucleus collisions at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt. The goal of the Compressed Baryonic Matter (CBM) experiment is to explore the QCD phase diagram in the region of high baryon densities not covered by other experiments. Among other detectors, it will employ a Transition Radiation Detector (TRD) for tracking of charged particles and electron identification.

In conjunction with a RICH detector and an electromagnetic calorimeter, the TRD has to provide a sufficient electron identification capability for measurements of charmonium and low-mass vector mesons. The required pion suppression is about a factor of 100 and the required position resolution has to be of the order of 200–300 µm. At the same time the detector has to be able to cope with large particle densities and very high interaction rates. To meet these demands, different prototypes for the TRD based on Multiwire Proportional Chambers (MWPC) have been tested at GSI and results on the performance of TRDs with double-sided pad plane electrodes will be shown.

This work is supported by EU-FP6 HADRONPHYSICS.