DESY’s Building 28 is the place where many superconducting ILC-style accelerator modules were born. The construction and assembly of the 101 modules for the European XFEL accelerator is an international endeavour, so DESY scientists and technicians have formed a mobile training team that educates people about the firms and institutes involved in giving birth to accelerator modules. In the picture the technicians couple the string of eight niobium cavities with the so-called cold mass, which carries the string. After the heat shields are mounted, a piece of high-tech art is mounted in the familiar yellow tanks. Image: DESY