Darmstadt 2016 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 59: Instrumentation XVI
HK 59.5: Talk
Thursday, March 17, 2016, 17:45–18:00, S1/01 A3
Prototype Test for the PANDA Barrel DIRC — Dzhygadlo Roman1, Gerhardt Andreas1, Kalicy Grzegorz1, •Krebs Marvin1, Lehmann Dorothe1, Peters Klaus1,2, Schwarz Carsten1, Schwiening Jochen1, Belias Anastasios1, and Traxler Michael1 for the PANDA collaboration — 1GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt — 2Goethe-Universität Frankfurt
The Barrel DIRC (Detector of Internally Reflected Cherenkov light) is designed to provide particle identification (PID) for the PANDA experiment at the new Facility for Antiproton and Ion Research in Europe (FAIR) at GSI, Darmstadt. It is based on the successful BABAR DIRC detector with several key improvements, such as focusing optics, fast timing, and a compact expansion volume.
A large prototype was constructed and tested in a hadronic particle beam at CERN during the summer of 2015 to test the PID performance of different design options. The prototype included a fused silica radiator (either a narrow bar or a wide plate), an optional focusing lens, and a prism-shaped fused silica expansion volume. An array of microchannel-plate photomultiplier tubes measured the location and arrival time of the Cherenkov photons on 960 pixels. Data were collected for two radiator geometries and several types of focusing lenses at different beam momenta and polar angles. Results of the analysis as well as a comparison to the Geant4 simulation will be presented.
Work supported by BMBF 05E12CD2, EU FP7 227431, HGS-HIRe.