In the Year 2017 a new target has been installed @A1 in Mainz. This target is a Cluster-Jet-Target, which means that a hydrogen jet streams through the vacuum chamber, perpendicular to Mamis electron beam. By cooling down to gas temperatures of 40 K, the gas jet gets high densities in the core, due to the formation of clusters. The Jet-Target enables high precision measurements due to its windowless design.
This poster shows the details of the entire construction and the first performed measurements regarding the density profile of the jet and the cooling behavior of the system.