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Abstract

he ALPHATRAP experiment has been designed to measure the g -factor of the bound electron in highly charged ions. Measurements are performed inside a cryogenic Penning trap. The highly charged ions are extracted from the Heidelberg electron beam ion trap (EBIT). However, before the extracted ions are loaded into the trap, one has to select individual ion species out of the broad spectrum of charge states produced by the EBIT. In order to be independent of the Heidelberg-EBIT as an ion source while setting up the injection of the ion into the trap, the use of a second EBIT as an offline source is intended. A compact velocity filter using electrostatic and magnetic fields for separation of charged particles will be used for the selection of the desired ion species. The integration of this filter into the beamline has been the subject of this thesis. A setup for testing this component was built and measurements of the resolving power have been performed. Simulations have been carried out to allow a better understanding of the different factors influencing the resolving power. Based on these results, an possible scenario of ion extraction and filtering has been discussed.