Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 60: Instrumentation XVII and Accelerators

HK 60.3: Talk

Friday, March 2, 2018, 14:45–15:00, Audimax H1

Studies on Laval Nozzles for the PANDA Cluster-Jet Target — •S. Grieser, D. Bonaventura, B. Hetz, and A. Khoukaz for the PANDA collaboration — Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany

The PANDA experiment (antiProton ANnihilation at DArmstadt) at the future accelerator facility FAIR (Facility for Antiproton and Ion Research) will focus on investigations on the strong interaction and on questions about hadronic matter. Therefore, a cluster-jet target as an internal target was designed and built up at the University of Münster. Such a target achieves high and constant beam thicknesses, which can be adjusted over several orders of magnitude during operation. By the expansion of pre-cooled gases within fine Laval nozzles a cluster source produces a continous flow of cryogenic solid clusters. The geometry of the Laval nozzle determines the production and the properties of the clusters. In the past, at the University of Münster an improved production process for Laval nozzles with their complex inner geometry was developed and first Laval nozzles were successfully produced and operated. The production of Laval nozzles ensures the operation of cluster-jet targets, e.g. for the PANDA or the MAGIX@MESA experiment, and opens the way for studies on the optimisation of these nozzles to match the required target performance. Measurements and their results with the new nozzles at the PANDA cluster-jet target prototype will be presented and discussed.