Magnetic design of superconducting quadrupoles for a SC linac for APT

Abstract

This paper describes the magnetic design for superconducting quadrupoles to be used in the superconducting option of the proton linac for the Accelerator Production of Tritium (APT) project. The quadrupole magnets provide the focusing for a singlet FODO lattice used in the linac. The magnets have a 16 cm (13 cm) aperture in the hi-/spl beta/ (medium-/spl beta/) section of the linac. The proposed design is a coil dominated magnet with an iron yoke at a larger radius to shield the magnetic field from other parts of the accelerator. The field performance, field quality, peak field and forces on the conductor are discussed.