Bochum 2018 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 5: Instrumentation I

HK 5.1: Gruppenbericht

Montag, 26. Februar 2018, 14:00–14:30, Audimax H1

Construction and Assembly of the Electromagnetic Calorimeter for the PANDA Target Spectrometer — •Markus Moritz for the PANDA collaboration — II. Physikalisches Institut, Justu-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 into a barrel and two endcaps. The individual crystal will be read out with two precisely matched large area avalanche photo diodes (APD). In the very inner part of the forward encap vacuum phototetrodes will be used instead.

In this talk the construction and assembly status 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.