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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Instrumentation

HK 26.2: Vortrag

Mittwoch, 21. März 2012, 14:30–14:45, P 2

The cluster-jet target for the PANDA experiment — •Alexander Täschner, Ann-Katrin Hergemöller, Esperanza Köhler, Hans-Werner Ortjohann, Daniel Bonaventura, and Alfons Khoukaz — Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Deutschland

The PANDA experiment will be one of the key experiments of the planned accelerator center FAIR at Darmstadt in Germany. The study of proton-antiproton annihilations at this fixed-target experiment in a dedicated storage ring will enable the precise investigation of the strong interaction, especially the QCD spectrum and the hadron structure.

In order to achieve these physics goals a hydrogen target with a high target density of up to 4×10¹⁵ atoms/cm² is needed which provides a target material of highest purity and a target density which is both constant in time and homogeneous in space. With a prototype setup at Münster it could be shown that these challenging demands can be met with a Münster type cluster-jet target which can produce cluster-jets of up to 1.5×10¹⁵ atoms/cm² at a distance of 2 m behind the nozzle. Therefore it was decided to implement a cluster-jet target at PANDA which can be interchanged with a pellet target depending on the physics program to be investigated.

In this presentation the design of the cluster-jet target for the PANDA experiment will be described. The detailed implementation into the detector setup and the expected operation properties will be shown.

Supported by EU (FP6+FP7), BMBF, and GSI F+E.