A COOLED GENERALIZED MULTIPLE TARGET SYSTEM TO CREATE POSITRONS FOR A COMPACT TUNABLE INTENSE GAMMA RAY SOURCE

A compact tunable gamma ray source has many potential uses in medical and industrial applications. One novel scheme to produce an intense beam of gammas relies on the ability to create a high flux of forward directional positrons, which are produced by an electron beam on a high Z target. Presented is an innovative system which allows for a nearly arbitrary targeting geometry that supports multiple targets, whose optimal design is driven by the physics of the positron production processes, while naturally supporting cooling of the targets.