To advance the development of fusion energy reactors, a new joint research project is being launched at the Technical University of Munich (TUM). The project will investigate the properties of innovative high-temperature superconductors (HTS), which are used to control the extremely hot plasma in the reactor, under extreme conditions. In addition to TUM’s Heinz Maier-Leibnitz Research Neutron Source (FRM II), the Max Planck Institute for Plasma Physics (IPP) and the company THEVA are also participating in the HTS4Fusion project, which is funded by the Federal Ministry of Research, Technology, and Space (BMFTR).