was expanded in 2020 to include a GPU-based booster module. The combined cluster and booster modules have a peak performance of 85 quadrillion floating point operations per second (85 petaflop/s), which currently makes JUWELS the most powerful supercomputer in Europe. Furthermore, the JUWELS booster module was the most energy-efficient system of the ten most powerful computers in the world when it was introduced. Medical imaging The Institute of Neurosciences and Medicine (INM) develops and applies medical imaging techniques using MRI and PET for clinical applications and to investigate neurological, neuropsychological, and psychological issues. Equipment at INM includes a combined 3 tesla and 9.4 tesla MRI PET tomograph as well as a 7 tesla, 4 tesla, and 3 tesla MRI system. Research with neutrons Forschungszentrum Jülich is a national competence centre for neutron scattering. The Jülich Centre for Neutron Science (JCNS), which operates instruments at various neutron sources all over the world, was established in 2006 – a few months before the original neutron source (the Jülich research reactor FRJ-2) was decommissioned. Six of the most important instruments were moved from FRJ-2 to FRM II; new instruments were also assembled there. In addition, JCNS has branch offices at the Institut Laue-Langevin (ILL) in Grenoble and at the Spallation Neutron Source (SNS) in Oak Ridge. JCNS also plans to operate instruments at the European Spallation Source (ESS), which is currently being constructed in Lund, Sweden, as well as at future high-brilliance accelerator-driven neutron sources. The instruments will be made available to a wide range of users, for example to conduct research into energy materials and active ingredients for medications or to analyse protein structures and magnetic materials. Cooler synchrotron (COSY) The COSY cooler synchrotron is a particle accelerator (synchrotron) and storage ring (circumference: 184 m) for accelerating protons and deuterons operated by the Nuclear Physics Institute (IKP) at FZJ. COSY is characterized by beam cooling, which reduces the deviation of particles from their predetermined path (can also be understood as the thermal motion of particles) using electron or stochastic cooling. At COSY, there are a number of experimental facilities for studies in the field of hadron physics. Research currently focuses on investigating the electric dipole moment of protons, testing components and methods for the planned Facility for Antiproton and Ion Research, and on preparatory experiments constructing an accelerator-based neutron source. Previous core experiments such as the ANKE magnetic spectrometer, the TOF time-of-flight