Abstract :
Magnetic field computations have been performed for the three-inch circular aperture doubler magnets in the warm iron geometry. Locations for rectangular conductors along circular arcs have been found such that, in the absence of the construction errors, the sextupole and decapole terms have been removed from the dipole. For the quadrupole suitable locations for the conductors have been found that remove the duodecapole term. Field quality, longitudinally integrated fields, construction errors, forces, energy content, and eddy current heating under cycled conditions will be discussed for a 45 kG dipole and a 20 kG/inch quadrupole.
