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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster

HK 54.48: Poster

Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium

The first Barrel Slice for the Electromagnetic Calorimeter of the PANDA experiment — •Markus Moritz, Hans-Georg Zaunick, and Kai-Thomas Brinkmann for the PANDA collaboration — II. Physikalisches Institut, Justus-Liebig-Universität, Gießen

The electromagnetic target calorimeter (EMC) of the future PANDA detector has the challenging aim to detect high energy photons with excellent energy resolution from 15 GeV down to a few tens of MeV. To reach this goal, improved PbW0₄ scintillator crystals, cooled down to −25^∘C have been chosen. They provide a fast decay time for highest count rates, short radiation length for compactness, improved light yield for lowest thresholds and excellent radiation hardness. The target calorimeter itself is divided into a barrel and two endcaps. The individual crystal will be read out with two precisely matched large area avalanche photo sensors (APD). In the very inner part of the forward endcap, vacuum phototetrodes will be used instead. In this poster the construction and assembly status of the first slice of the barrel will be presented. This includes for example the assembly of detector subunits, mechanical support structure, the cooling system, optical monitoring system and front end electronics. This project is supported by the BMBF, GSI and HIC for FAIR.