The CMS experiment (Compact Muon Solenoid) refers to the gigantic particle detector installed at CERN near Geneva in one of four caverns of an accelerator ring with 27 km in circumference, located 100 m below the earth's surface. The support structure of the CMS detector was designed by ISATEC in cooperation with the I. Institute of Physics (IA) at RWTH Aachen University. “Compact” indicates its high weight, yet comparatively small dimensions; “Muon” designates the focus on the detection of muons and “Solenoid” stands for the type of magnetic coil on the inside – the world's largest superconducting magnet. What makes these superconducting magnets compelling is their exceeding precision of thousandths of a mm.