Utilization of gamma ray inspection system for tomographic imaging and dimensional analysis of complete model magnet cold masses and collared coil sections

Non-destructive digital photon transmission imaging can performed with the IRIS system to provide internal component dimensions and locations of manufactured superconducting magnets and sub-assemblies. With non-destructive evaluation of the magnet components, and sub-assemblies at critical stages of the manufacturing process, it is possible to assess the quality at each stage with the goal of improving manufacturing reproducibility and reliability. Evaluations of the feasibility of the IRIS system have been performed on a NbTi billet used for the production of monofilament rods used in the manufacturing of multifilament strand. It has also been used to perform inspections on collared coil sections, both 40 mm and 50 mm, as well as cold masses. The dimensional accuracy for locating the conductor winding positions in a collared coil section has been found to be ± 80 microns. Non-destructive analysis using the IRIS system offers in process inspection, as well as post assembly examination capabilities previously unavailable except through destructive physical analysis be sectioning and polishing for optical inspection after vacuum impregnation. This novel inspection tool may give us deep insights into the validity of our mechanical, and electromagnetic models currently used to evaluate magnet design and may lead to substantial savings per magnet analysis