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HK: Fachverband Physik der Hadronen und Kerne

HK 44: Instrumentation VIII

HK 44.4: Vortrag

Donnerstag, 19. März 2026, 17:00–17:15, PHIL A 301

Investigations of gas flow through nozzles to optimise the deflection of filament target beams — •Eva-Maria Hausch, Jost Froning, Simon Obszerninks, and Alfons Khoukaz — Institut für Kernphysik, Universität Münster, 48149 Münster, Germany

To deflect a cryogenic hydrogen target beam, a recently developed method called cryobending is used, whereby gaseous helium is directed towards the filament target beam through deflection nozzles. Experiments have indicated that this allows the target beam to be deflected in a targeted manner to overcome a distance of more than 4 metres. Two types of deflection nozzles have been tested so far. In addition to experimental approaches such as interferometry, gas flow simulations are intended to determine the most effective type and size of nozzle, i.e. with which nozzle the least amount of helium gas can be used for the largest possible deflection to minimise the impact on the vacuum.
In this talk, the first approaches to determining the optimal operating parameters regarding cryobending will be discussed.

Funding was received from GSI F&E (MSKHOU2527), BMBF (05P21PMFP1) and NRW Netzwerke (NW21-024-E).

Keywords: gas flow simulations; cryobending; filament target; cryogenic targets; hadron physics