Fermilab doubler magnet design and fabrication techniques

During the last year, the Fermilab Doubler magnets have benefited from a development effort to upgrade the performance of the superconducting magnets. This paper presents the results of this effort. The design philosophy and the fabrication techniques used on current magnets will be discussed, along with innovative laminated tooling which has been designed to give Fermilab a two dipole a day production capability. Specific topics to be discussed are coil geometry, coil winding techniques, coil clamp collars, buss geometry and insulation, integral quench heaters for quench protection, coil twist, coil helium irrigation and assembly techniques that assure azimuthal preload and accurate coil size.