MAGNETIC MATERIALS FOR ACCELERATOR ELECTROMAGNETS

Accelerator electromagnets are used in synchrotrons for the guidance of particles. For the successful operation of such synchrotrons, high field homogeneity is required to be provided by the electromagnets. Furthermore, the magnetic field characteristics of all electromagnets of one type installed have to be identical. A high field homogeneity and equal performance from electromagnet to electromagnet can only be achieved if great care is taken when the selection of magnetic materials is done, and if a rigorous quality assurance plan is implemented during manufacturing. In this paper a procedure is presented for selecting the magnetic material and mandatory steps during manufacturing are outlined.