Dresden 2013 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Instrumentation

HK 23.2: Vortrag

Montag, 4. März 2013, 17:15–17:30, WIL-A221

Investigation of PANDA EMC modules in a realistic high rate environment — •Marcel Werner, Martin Galuska, Hu Jifeng, Sören Lange, Yutie Liang, Wolfgang Kühn, Björn Spruck, and Matthias Ullrich — II. Physikalisches Institut, Justus-Liebig Universität Gießen

The future physics program of the Panda experiment at FAIR imposes high requirements on the performance on all subdetectors and in particular the electromagnetic calorimeter (EMC).

The installation of a Zero Degree Detector (ZDD) at the Bes III experiment, Beijing, China, using PANDA-type PbWO4 crystals with the purpose of studying the radiative return, offers a unique opportunity for a test under a realistic high rate environment similar to the future Panda operation. As the available space for the ZDD at Bes III is small and therefore the energy resolution of the ZDD is limited, the knowledge of the photon impact at the ZDD is of importance since it determines the event structure in the Bes III detector. Also online event processing using DSP-algorithms, matching Bes III detector and ZDD information, to pick out events of interest is necessary to handle the expected event rates (O(MHz)).

The prototype readout chain comprises a sampling ADC prototype with a fast optical interface and an ATCA-based Compute Node with 5 XILINX Virtex-4 FX60 FPGAs. The status of the system will be presented.

This work was supported in part by BMBF under grant number FAIR-PANDA 05P12RGFPF and HIC4FAIR.