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Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 7: Instrumentierung I

HK 7.6: Vortrag

Montag, 21. März 2011, 15:15–15:30, HS1

Results from first tests of TRD prototypes for CBM — •Pascal Dillenseger — Institut für Kernphysik Frankfurt am Main

The CBM experiment at FAIR will explore the QCD phase-diagram with heavy ion collisions from 10 to 45 AGeV. The precise measurement of leptonic decay channels of charmonia is one of the key observables of the CBM physics program. In CBM the electrons will be identified by serveral layers of Transition Radiation Detectors (TRD) and a RICH detector, providing a pion rejection factor of 103. The expected high signal rates demand a fast detector response. We present the approach to facilitate thin MultiWire Proportional Chambers (MWPC) to fulfill this requirement. Several prototypes with different wire pitch and gas gap have been built and tested with a Fe55 and a Cd109 source. In addition first results from beam tests with a mixed electron pion beam from the CERN PS will be discussed.

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