1. General Seminars

Monolithic laval nozzles

by Dr Alexander Taschner (Institut fur Kernphysik, Universitat Munster)

Aula Conversi (Laboratori Nazionali di Frascati)

Aula Conversi

Laboratori Nazionali di Frascati

Cluster-jet targets are operated successfully since many years as internal targets for hadron physics experiments at storage rings. At the University of Munster the prototype of the cluster-jet target station for PANDA has been built which allows for systematic studies on the production and the properties of high-density cluster-jet beams. The central part of the cluster source is a fine laval nozzle made of copper which allows for the production of a cluster beam with high purity and density from a cooled hydrogen fluid. The used nozzle was produced almost two decades ago in the workshops at CERN. Since then the nozzle production was stopped at CERN, so that it was necessary to find a way to produce new nozzles. Therefore, a new production line for such nozzles was established at the University of Munster.
In my talk I will present the methods which allows for the production of new monolithic nozzles and future plans for the investigation of the dependance of the cluster beam properties on the nozzle geometry.