DEVELOPMENT OF ROBUST TECHNOLOGY FOR ASSEMBLING ANNULAR TARGETS CARRYING LEU FOILS FOR PRODUCTION OF MO-99

This paper will present analysis, design work, and experimental investigation for development of an effective drawing process and device for assembling the inner and outer tubes of the ANL-designed LEU-foil target. The developed device and process are semi-automated and robust in order to meet minimum productivity of 2000 defects-free targets annually. All technical constraints of both process and device designs are identified. Mechanics of the developed process are analyzed using both analytical and finite element techniques in order to explore the design conditions that assure integrity of the assembled targets and safety during their irradiation. The new design is flexible and can be easily adjusted for assembling annular targets with different dimensions needed for accommodating LEU foils with different sizes.