Charge Breeding with Dresden EBIS/T systems

Electron Beam Ion Sources and Traps (EBIS/T) of the Dresden EBIS/T type have been proven to be efficient and reliable sources of highly charged ions in many applications [1]. At GSI, a Dresden EBIT named SPARC-EBIT is currently being installed as an ion injector at the HITRAP facility. It will serve as an off line ion source for test runs and experiments. Plans for the future also envision the application of the SPARC-EBIT or other Dresden EBIS/T systems for charge breeding purposes. In this regard, the project presented here focuses on testing the performance of these sources as charge breeders. Charge breeding with EBIS/T facilities using superconducting solenoid coils for the compression of the electron beam has been achieved successfully with breeding efficiencies into one charge state of more than 10 % [2]. The Dresden EBIS/T concept, however, is based on the usage of permanent magnets. The absence of refrigeration technology or liquid cooling gases results in many advantages such as low initial and running costs, easy operation, and a compact design which allows for transportation of the sources. On the other hand, their relatively short ion trap regions, shallow trap potentials, and low magnetic field strengths create challenges in trapping injected ions.