Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 38: Instrumentation
HK 38.5: Vortrag
Dienstag, 5. März 2013, 15:00–15:15, WIL-C207
Performance of the PANDA Barrel DIRC Prototype — A. Gerhardt1, •G. Kalicy1,2, D. Lehmann1, M. Patsyuk1,2, K. Peters1,2, G. Schepers1, C. Schwarz1, J. Schwiening1, and M. Zuhlsdorf1,2 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Goethe-Universität, Frankfurt
The design of the Barrel DIRC (Detection of Internally Reflected Cherenkov light) detector for the future PANDA experiment at FAIR contains several important improvements compared to the successful BABAR DIRC, such as focusing and fast timing. To test those improvements as well as other design options a prototype was built and successfully tested using a hadronic particle beam at CERN in 2012.
The prototype comprises a radiator bar, focusing lens, mirror, and a solid fused silica prism as a compact expansion volume. An array of micro-channel plate photomultiplier tubes measures the location and arrival time of the Cherenkov photons. During the beam tests many critical parameters were varied, such as beam momentum, incidence angle and position on the bar, and the type of focusing system.
We will discuss the performance of the prototype, including measurements of the photon yield and Cherenkov angle resolution.
Work supported by EU6 grant, contract number 515873, DIRACsecondary-Beams, EU FP7 grant, contract number 227431, HadronPhysics2, and the Helmholtz Graduate School for Hadron and Ion Research HGS-HIRe.