Alignment of the Booster Injector for the Duke Free Electron Laser Storage Ring

This paper presents the methodology and initial results for mechanical alignment of the booster synchrotron for the Duke Free Electron laser Laboratory (FELL) storage ring. The booster is a compact design and requires special considerations for alignment. All magnets and vacuum chambers in the arcs have been designed such that a laser tracker can be best utilized for alignment. A parametric 3D design package has been used to determine target coordinates. These target coordinates evolve from design goals to physically verified dimensions by modifying the parametric model to match mechanical measurement data after fabrication. By utilizing the functionality of a laser tracker system [1] and a parametric 3D modeler, a direct and efficient measurement and alignment technique has been developed for the booster ring’s complex geometry.