Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 18: Instrumentation IV
HK 18.5: Talk
Tuesday, March 17, 2026, 17:15–17:30, PHIL B 302
New nozzle production method and vacuum simulations for the PANDA cluster-jet target — •Michael Weide, Daniel Bonaventura, Philipp Brand, Hanna Eick, Sophia Vestrick, and Alfons Khoukaz for the PANDA collaboration — Institut für Kernphysik, Universität Münster, 48149 Münster, Germany
In antiproton-proton annihilation experiments such as the upcoming PANDA experiment at FAIR, internal targets have a key role as they allow the accelerator beam to be utilized for multiple interactions with the target. Initially, this target will be realized by a cluster-jet target (CJT) operated with H2, that produces clusters of sizes ≤20 microns in diameter.
Due to the costly production of antiprotons, a challenge of such an experiment is minimizing background reactions. Thus, good vacuum conditions are mandatory. To predict the vacuum conditions for an experimental setup, a vacuum simulation model is developed and compared with experimental data recorded at a similar experimental setup at COSY (FZ Jülich).
The core piece of a CJT is a copper de-Laval nozzle, for which a new in-house production process is being developed at the Institute of Nuclear Physics at the University of Münster. This allows to perform detailed analysis on the influence of the geometry and shape of the nozzle. The current status as well as beam studies of the new nozzle design are presented.
The research project was supported by BMBF (05P21PMFP1) and NRW Netzwerke (NW21-024-E).
Keywords: Cluster-jet target; Vacuum simulations; Flash evaporation; Beam target interaction; Nozzle production