Owned the end-to-end mechanical design of multiple major revisions of an Ion–Deuteron H-type linear accelerator, including alignment and tolerance stack-up, thermal and structural FEA, cooling system design, peripheral integration, and brazed-structure and fixturing optimization. I led the mechanical design of an H type linac cell from concept to hardware, using GD&T and first principles stack up design to control critical cavity geometry and alignment. I ran structural and thermal FEA under worst case loads to refine the cooling strategy and designed a braze assembly that preserved alignment through brazing, using RCA to work through fabrication setbacks. I then validated the build with CMM measurements on key features and helium leak testing for vacuum integrity. Structure was successfully tunned to desired resonant frequency and resonance strength and helped validate the feasibility of later revision design improvements.