Future Directions for Isochronous Cyclotrons

There are many directions which isochronous cyclotrons will take in the future. Some of the directions are very certain such as the use of cyclotrons as booster and/or initial accelerators for heavy ions and their commercial/medical use as neutron sources and sources of radioisotopes. On the other hand, there are several other exciting possibilities such as energy-multiplier rings for existing facilities, including the possibility of multi-ring cyclotrons of the superconducting type for use as kaon factories. Also one of the existing intermediate-energy cyclotrons could be used as an injector for a fast-cycling synchroton in a kaon factory. Some of these possibilities are described.