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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Instrumentation XII

HK 52.2: Vortrag

Donnerstag, 13. März 2025, 16:00–16:15, SR Exp1B Chemie

Stability analyses of a cryogenic hydrogen filament target — •Eva-Maria Hausch, Jost Froning, Christian Mannweiler, Simon Obszerninks, and Alfons Khoukaz — Institut für Kernphysik, Universität Münster, 48149 Münster, Germany

Internal targets such as hydrogen cluster-jet and pellet/droplet targets are widely applied in accelerator experiments in nuclear and particle physics. For example, the future PANDA experiment at FAIR will make use of both target types. Another option for internal target experiments is to use filament targets.

The MDT-H is a droplet target which is currently operated in Münster as a filament target. The hydrogen is cooled down to liquid conditions, leaves the target through an aperture nozzle with a diameter of 10 microns into the interaction chamber and freezes out due to the low vacuum pressure, resulting in a solid hydrogen beam. For operation in accelerator experiments, it is important that the target beam exhibits minimal fluctuations, for vertex reconstruction. Stability analyses provide information about these fluctuations and form a basis for optimising the target.

In this talk, the setup of the MDT-H will be presented and the results of various stability measurements will be shown.

The research project was supported by EU Horizon 2020 programme (824093), BMBF (05P21PMFP1) and NRW Netzwerke (NW21-024-E).

Keywords: droplet target; cluster-jet target; hadron physics; cryogenic targets; filament target