Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 5: Instrumentation

HK 5.5: Vortrag

Montag, 19. März 2012, 15:15–15:30, P 3

Investigation of PANDA EMC modules in a realistic high rate environment — •Marcel Werner, Wolfgang Kühn, Sören Lange, and Björn Spruck — II. Physikalisches Institut, JLU Gießen

The PANDA experiment is expected to start its physics program within the next decade with the goal to study hadron physics in the charm region. The experiment imposes high requirements on the performance of the single detector parts of PANDA, tests of the detector subsystems are indispensable.

The installation of a Zero Degree Detector (ZDD) at the Bes III experiment, Beijing, China, using PANDA-type PWO crystals with the purpose of studying the radiative return, offers a unique opportunity to study the PANDA EMC DAQ chain in detail in a realistic high rate environment. As the available space for the ZDD at Bes III is very 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 information and ZDD information, to pick out events of interest is necessary to handle the expected event rates (O(MHz)). The Compute Node developed for PANDA by the Institute of High Energy Physics (IHEP) at Beijing and the university of Giessen is suitable to handle these tasks.

This work was supported in part by BMBF under grant number 06GI 9107I PANDA and HIC For FAIR.