Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 11: Instrumentation

HK 11.8: Talk

Monday, March 19, 2012, 18:30–18:45, P 2

Performance of CBM TRD Prototypes from Münster — •Cyrano Bergmann — Institut für Kernphysik, WWU Münster

CBM is a fixed target heavy-ion experiment at the future FAIR facility. The CBM Transition Radiation Detector (TRD) is one of the key detectors to provide electron identification and charged particle tracking. Based on the ALICE TRD design, four CBM TRD prototype modules were built in Münster and tested during October 2011 in beam at the CERN Proton Synchroton with electrons and pions of momenta up to 10 GeV/c. Readout was performed with the time sampling Self-triggered Pulse Amplification and Digitization asIC (SPADIC), an especially designed front-end electronics component for the CBM TRD.

The objectives of the beam test included measurements of: electron identification performance for different radiators, position resolution and dependence on particle momentum. First results of these measurements will be presented. The layout of the final TRD will be driven by these beam test results. Depending on the achieved electron identification performance, the TRD could be constructed in 6-10 layers, consisting in total of several 100 individual detector modules covering an area of up to 600 m².

Work supported by BMBF and the HadronPhysics2 project financed by EU-FP7.