The development of Electrostatic ion-beam Storage Devices (ESDs) have new and unique features for studies of molecular and cluster ions and allow for experimental studies in completely unexplored time domains and with strongly limited and controlled background blackbody radiation fields.
The ELISA ring at Aarhus University and two similarly sized electrostatic storage rings in Japan; one at Tsukuba and one at the Tokyo Metropolitan University were the first to be brought into operation for atomic-, molecular-, cluster- and chemical physics experiments. More recently, additional room-temperature electrostatic ion-storage rings have been commissioned: One in Frankfurt and two in Aarhus. In the latter case, the main focus is on the interaction of the stored ions with radiation in the form of fs-laser pulses (SAPHIRA) and synchrotron radiation (XRING). In Lyon, a compact electrostatic ion-storage ring, MiniRing has been built. Due to its small size it is well suited for studies of processes on microsecond timescales. Three more room-temperature electrostatic ion-storage rings are currently in different phases of preparation or construction. They are or will be located in Riyadh, Saudi Arabia, in Pasadena, USA and in Tianjin, China. Three cryogenic electrostatic storage rings exist today: DESIREE at Stockholm University, CSR at the Max-Planck Institute in Heidelberg, and RICE at RIKEN, Japan. A new cryogenic electrostatic ion-storage ring is to be built at KU Leuven in Belgium and there are plans to upgrade the Lyon MiniRing to cryogenic operation.