Developments on the KSU-CRYEBIS, a user facility for low energy, highly charged ions

The KSU‐CRYEBIS, a cryogenic electron beam ion source, delivers ions over a wide range of ion energy per charge, ion mass, and charge state for atomic physics experiments. Lower charge states yield time‐averaged currents in the nA range, whereas the highest charge states, such as Ar18+, Fe24+, Kr34+, and Xe47+, yield time‐averaged currents in the pA range. The number of available species and isotopes has been substantially increased, and include metalorganics to produce stable, high‐yield beams of metal ions. The high‐voltage platform control system and the ion optics have been improved and allow for acceleration of the ions to 160 kV/q as well as for deceleration to a fraction of 1 kV/q. The diagnostics of the facility are continuously being upgraded.