Erlangen 2026 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 18: Instrumentation IV

HK 18.4: Talk

Tuesday, March 17, 2026, 17:00–17:15, PHIL B 302

Completion of the PANDA cluster-jet target setup — •Hanna Eick, Daniel Bonaventura, Philipp Brand, Liridon Deda, Friederike Rummler, Michael Weide, and Alfons Khoukaz for the PANDA collaboration — Institute for Nuclear Physics, University of Münster, Germany

Cluster-jet targets offer a wide range of potential applications, due to their unique windowless and internal design, making them an attractive choice for various experimental settings. A powerful state-of-the-art cluster target source, specifically designed and constructed for the future PANDA experiment at FAIR, has been successfully assembled and integrated with a dedicated target setup at COSY/Jülich. This target system will play a decisive role in the upcoming KOALA experiment at the GSI in Darmstadt over the next years. To optimize its performance, a comprehensive study has been conducted to investigate the target’s properties, focusing on vacuum pressure distributions along the target beam line and target jet density at different stagnation conditions. Furthermore, a newly commissioned beam dump, equipped with multiple diagnostic tools, has undergone intensive testing. This presentation highlights the key findings, with particular emphasis on achieving a high target density of up to 10¹⁵ atoms/cm² at the interaction point and > 2.1 m behind the jet nozzle, while maintaining minimal residual pressure background, through careful adjustment of the orifice system within the beam dump. This project has received funding from GSI F&E (MSKHOU2023, MSKHOU2527), NRW Netzwerke (NW21-024-E), BMBF (05P21PMFP1).

Keywords: cluster-jet target; target properties; internal beam target; hadron physics