Preliminary requirements for the design of the PS2 main magnets

The aim of this note is to give preliminary requirements for the PS2 main magnets as input for a first design and cost estimate. The aperture requirements are based on PS2 lattice studies that are presently ongoing and therefore changes may occur when the study progresses. Tight requirements are quoted for the field quality, these will have to be refined by dynamic aperture and tracking studies at a later stage. The anticipated machine cycles for the most important operations are quoted and typical operation scenarios are discussed as input for powering requirements. It is assumed that the machine will have a classical vacuum system without bake-out equipment in the magnets.