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Room-temperature EBIS/T developments: past, present and future

We present a brief overview of the Dresden Electron Beam Ion Source/Trap (EBIS/T) family focusing on the advantages and limits of different types of permanent magnet systems for electron beam compression. The advanced electron optics of these sources as well as the operating parameters of the Dresden EBIT, EBIS, and EBIS-A are discussed. Furthermore, the recently commissioned Dresden EBIS-SC is introduced. Using a liquid helium free superconducting magnet system it stands out as a new kind of the Dresden EBIS/T ion source family as a compact and powerful electron beam ion source.