High Current Ion Sources PIG (Penning Ionization Gauge) ion source The PIG source has a long tradition at GSI. This type of ion source has been used since the beginning of GSI operation in the early 1970ies [...] 1970ies. The ion source is installed in high voltage Terminal South in order to inject multiply-charged ions with ion beam currents of several hundreds of electrical microamperes into the high current injector [...] Xe, Mo, Sm, Au MUCIS (MUlti Cusp Ion Source) MUCIS is one of the first high current gaseous ion sources used at GSI for beamtime operation. It is a filament driven ion source with non-axial filament c