English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

An advanced technique for a two-dimensional real time visualization ofcluster beams in vacuum as well as of the overlap volume of cluster beams withparticle accelerator beams is presented. The detection system consists of anarray of microchannel plates (MCP) in combination with a phosphor screen whichis read out by a CCD camera. This setup together with the ionization of acluster beam by an electron or ion beam allows for spatial resolvedinvestigations of the cluster beam position, size, and intensity. Moreover,since electrically uncharged clusters remain undetected, the operation in aninternal beam experiment opens the way to monitor the overlap region and thusthe position and size of an accelerator beam crossing an originallyelectrically neutral cluster jet. The observed intensity distribution of therecorded image is directly proportional to the convolution of the spatial ionbeam and cluster beam intensities and is by this a direct measure of thetwo-dimensional luminosity distribution. This information can directly be usedfor the reconstruction of vertex positions as well as for an input fornumerical simulations of the reaction zone. The spatial resolution of theimages are dominated by the granularity of the complete MCP device and wasfound to be in the order of \sigma~100 \mu m.

Two-dimensional visualization of cluster beams by microchannel plates