The design of a diffusion bonded high gradient collection lens for the FNAL antiproton source

Advances in metal joining technology have made it possible to manufacture a one piece lithium lens design utilizing diffusion bonding rather than the current multiple piece, electron beam welded lithium lens design. Advantages of the new design include fewer lithium seals, incorporation of heat treatment with the bonding cycle, vastly simpler assembly requirements, and decreased cost and manufacturing time. Fatigue testing results are presented which indicate that the diffusion bonded joints are just as strong as the parent material. Results from a first prototype of this new design are presented as well as the design of a second prototype.