Status Report on the RIKEN Ring Cyclotron

The RIKEN ring cyclotron (separated sector cyclotron), combined with two injectors, can accelerate all elements from proton to uranium up to energies between a few tens of MeV/u and a hundred MeV/u. Construction of this cyclotron is well under way according to schedule. All of the sector magnets were installed in the cyclotron vault in June of 1984. The remaining components are being under fabrication at the factory. Orbit analysis is also under way to find out how to operate this machine easily. The ring cyclotron will be completed in the beginning of 1986 and the first beam is scheduled for the fall. Present status of the RIKEN ring cyclotron is reported.