CRYRING - a small storage and acceleration ring for heavy ions

CRYRING is a facility for research in atomic, molecular and nuclear physics using a cryogenic electron beam ion source, CRYSIS, together with a RFQ linear accelerator as injector into a synchrotron ring, which can be used both for acceleration, deceleration and storage of very highly charged, heavy ions. (CRYRING stands for CRYsis-synchrotron-RING, RFQ for Radio Frequency Quadrupole and CRYSIS for CRYogenic Stockholm Ion Source.) A lay-out of CRYRING in an available laboratory area is shown. In the ring itself experiments with a circulating heavy ion beam and merged or crossed beams of electrons, laser-photons, neutrals and ions will be possible. Crossed ion beams will be available from a 400 kV accelerator. Injectors for negative (hydrogen) ions and electrons (intended for cooling as well as experiments) are included in the project. Regarding the extraction of accelerated heavy ions for nuclear and atomic spectroscopy, it should be emphasized that the project aims at very heavy ions (Xe-U) which will be energetic enough to overcome the Coulomb barrier of heavy target nuclei. The different injectors can be separately used for experiments when not in operation for CRYRING. It should also be emphasized that since CRYSIS is a pulsed ion source, beam-sharing will be simplified, making it possible to run two or perhaps even three different experiments simultaneously