München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 52: Instrumentation und Anwendungen

HK 52.4: Vortrag

Donnerstag, 23. März 2006, 17:45–18:00, H

Development of High Density Cluster-Jet-Targets for Storage Ring Experiments — •Alexander Täschner, Alfons Khoukaz, Hans-Werner Ortjohann, Jennyfer Otte, and Tobias Rausmann — Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, D-48149 Münster

Cluster-jet-targets are operated successfully since many years as internal targets for storage ring experiments. Main advantages of this windowless type of target are a density distribution which is homogeneous and constant in space and time, an extreme high purity of the target beam and an easy possibility to adjust the density and therefore the luminosity of the experiment by orders of magnitude in realtime.

However, in order to utilize these advantages for new types of detector systems with 4π-geometry like the PANDA detector at the upcoming FAIR at GSI, cluster-jet sources have to be improved with respect to the maximum target density to allow for highest luminosities in combination with larger distances between the cluster source and the interaction region.

For this purpose a cluster-jet target station has been build up at the University of Münster which covers the required spatial requirements of a future 4π-detection system. This target station allows for systematic studies on the production of high-density cluster-jet beams. Recent modifications resulted in significantly increased target densities compared to hitherto existing cluster targets. The used experimental methods will be discussed and present results will be presented.

This work was supported by EU (contract RII3-CT-2004-506078)