Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Instrumentierung VIII

HK 46.7: Vortrag

Mittwoch, 23. März 2011, 18:30–18:45, HS1

Performance of the future cluster-jet target for PANDA at FAIR — •Esperanza Köhler, Daniel Bonaventura, Ann-Kathrin Hergemöller, Alfons Khoukaz, Hans-Werner Ortjohann und Alexander Täschner — Institut für Kernphysik, WWU Münster, Wilhelm-Klemm Str.9, 48149 Münster

An internal cluster-jet target will be one of the two target stations for the planned PANDA experiment at the antiproton accelerator and storage ring HESR/FAIR. This type of target allows for a high and constant target density at the interaction point as well as for the possibility to vary the target density continuously during operation. Since the investigation of antiproton-nucleon interactions will be one of the main topics at PANDA, hydrogen and deuterium are of utmost interest as target material. At the university of Münster the prototype of the cluster-jet target in complete PANDA geometry has been built up and set into operation. Using this prototype, important information on the future target properties such as target beam dimensions and absolute target thickness can be gained directly. Special emphasis of the current investigations are a further increase of the already achieved target thickness of ρ ≈ 10¹⁵ atoms/cm² after two meters from the production nozzle as well as a decrease of the gas load to the scattering chamber by special micrometer sized collimators produced by a laser cut method. The achieved performance and the optimised design concept of the cluster generator for PANDA will be presented.

Supported by EU, BMBF and GSI F&E.