Design and fabrication of the superconducting bending magnet for the injection system of the RIKEN SRC

A K2500 superconducting ring cyclotron with 6-sectors is being constructed at RIKEN as one of the energy boosters of the existing K540 ring cyclotron. The bending magnet for beam injection should be superconducting. Required fields are about 4 T and the radius of curvature of the coils is about 1.2 m. Its design was finalized for real production based on successful results of the R&D coils. In this paper the final design will be described with the status of the fabrication.