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HK: Fachverband Hadronen und Kerne

HK 18: Accelerators and Instrumentation I

HK 18.6: Talk

Monday, March 16, 2009, 17:45–18:00, H-ZO 80

First Test Experiment with a PANDA Disk DIRC Prototype Detector (ToP-design) — •Peter Koch, Irina Brodski, Michael Düren, Klaus Föhl, Avetik Hayrapetian, Benno Kröck, Oliver Merle, Peter Schönmeier, Michael Sporleder, and Marko Zühlsdorf — II. Physikalisches Institut, Universität Giessen, Germany

The Disk DIRC is a forward detector for particle identification in the PANDA experiment at FAIR. It uses the internally reflected Cherenkov light that is emitted by a particle crossing the disk. In the ToP-Design the Time of Propagation of the Cherenkov photons is measured to extract the Cherenkov angle.

A test experiment was done at DESY in Summer 2008 using the 3.5 GeV electron beam. The photons were measured using multichannel plate photomultipliers (MCP-PMTs). The signales were digitized using TDCs with 25 ps resolution. First results are presented.