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Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Instrumentation

HK 19.9: Talk

Tuesday, March 20, 2012, 18:45–19:00, P 3

A CBM-RICH prototype photo-detector: performance and beam test results* — •Jan Kopfer — Bergische Universität Wuppertal

The Compressed Baryonic Matter Experiment (CBM) at the future Facility for Antiproton and Ion Research will explore the phase diagram of strongly interacting matter at high net-baryon densities. A Ring Imaging Cherenkov Detector (RICH) is developed for clean and efficient electron identification. It will consist of a gaseous radiator volume, high UV-reflectivity mirrors, and a photo-detector which is foreseen to be built of Hamamatsu H8500 multianode photomultiplier tubes.

A prototype RICH detector with self triggered readout electronics has been built and was tested at the Cern PS/T9 beamline. We will discuss the performance of the photo-detector in terms of number of detected photons per Cherenkov ring, single photon spectra, crosstalk, and electron pion separation capability.

* supported in part by GSI project WKAMPE1012 and by BMBF grant 06WU9195I

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