Bochum 2018 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 13: Instrumentation V
HK 13.3: Vortrag
Montag, 26. Februar 2018, 17:15–17:30, HZO 80
The Endcap Disc DIRC for PANDA at FAIR — •Mustafa Schmidt, Simon Bodenschatz, Michael Düren, Erik Etzelmüller, Klaus Föhl, Avetik Hayrapetyan, Kristof Kreutzfeldt, Julian Rieke, and Marc Strickert — II. Physikalisches Institut, JLU Gießen, Deutschland
The Endcap Disc DIRC is a Cherenkov detector that has been developed to provide an excellent particle identification for the future PANDA experiment by separating π± and K± up to a momentum of 4 GeV/c with a separation power of 3σ in the polar angle region from 5∘ to 22∘. This goal will be achieved by using a highly polished Cherenkov radiator made of synthetic fused silica that is read out at the rim by using focusing elements and fast photo sensors. Different MCP-PMT photocathode materials and setup options have been studied with the help of Monte-Carlo simulations and validated by testing several prototype detectors in particle beams at CERN and DESY. This talk covers mainly the dedicated reconstruction algorithms that are used for obtaining likelihood values for different particle hypotheses. A full simulation of one detector quadrant has been performed to study the detector performance for different particle momenta under the influence of the magnetic field of the PANDA solenoid magnet. Furthermore, the glueball decay pp→ f0(1500)π0→ K+K−π0 was chosen as a benchmark channel to evaluate PID ith the Endcap Disc DIRC in PANDA. For a fast event-filtering, an online reconstruction framework has been prepared. Preliminary tests, which have been carried out with a Virtex-4 FPGA card, show promising results.