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HK: Fachverband Physik der Hadronen und Kerne

HK 44: Instrumentation IX

HK 44.4: Vortrag

Donnerstag, 30. März 2017, 15:00–15:15, F 102

Testbeam with the latest Disc DIRC prototype — Julian Rieke, Simon Bodenschatz, Erik Etzelmüller, Michael Düren, •Klaus Föhl, Avetik Hayrapetyan, Kristof Kreutzfeldt, and Mustafa Schmidt for the PANDA collaboration — II. Physikalisches Institut, Justus Liebig-University of Giessen, Giessen, Germany

The PANDA experiment at the future FAIR facility needs excellent particle identification to do precision studies of antiproton-proton reactions in the 1.5-15 GeV/c momentum range. To fulfill this need, two Cherenkov detectors will be installed in the PANDA target spectrometer, both based on the DIRC concept that uses internally reflected Cherenkov light to perform particle identification, with a focus on the separation of pions and kaons. The Disc-DIRC is designed to cap the forward region of theta angles between 5 and 22 degrees. It will be the first time that a Disc-DIRC is used for PID in a real physics experiment beyond prototyping. A new prototyping Disc-DIRC apparatus has been constructed at the JLU Giessen. It features a radiator and focusing elements made out of fused silica and close to final readout electronics. The entire prototype was tested with an electron beam of several GeV/c at DESY in Hamburg. The components, their setup and a first analysis of the recorded data will be presented.