Magnets to be used for the in-flight fragment separator of the rare isotope science project have been designed. The dipole magnet has a gap width of 150 mm and a magnetic rigidity of 10 Tm. The superferric quadrupole magnet, which is main focusing element, has a pole tip radius of 170 mm and a maximum field gradient of 15 T/m. In the high radiation region near the production target, warm iron dipole and quadrupole magnets employing high-temperature superconductor coils have been considered in order to reduce cold mass and to remove large radiation heat loads efficiently at the temperature of 20-50 K. The designs of dipole and quadrupole magnets have been optimized, and prototyping of a superferric quadrupole magnet is in progress. Simulation results using OPERA-3D and a plan of prototyping are discussed.
展开▼
