PLANAR PERMANENT-MAGNET MULTIPOLES FOR PARTICLE ACCELERATOR AND STORAGE-RING APPLICATIONS

In prior work a planar permanent magnet (PM) configuration for generat ing an approximate quadrupole field distribution in the vicinity of it s symmetry axis was disclosed. In the present paper extensions of the method are considered for generating sextupole and higher order multip ole fields. The field distributions and strengths are contrasted with idealized (n-fold rotationally symmetric) multipole field generators a nd selected applications in the area of single-pass and recirculating particle machines are considered.