Forschungszentrum Jülich (FZJ here for short) is a national research institution that pursues interdisciplinary research in the fields of energy, information, and bioeconomy. It operates research infrastructures with a focus on supercomputers. Current research priorities include the structural change in the Rhineland lignite-mining region, hydrogen, and quantum technologies. As a member of the Helmholtz Association with roughly 6,800 employees in ten institutes and 80 subinstitutes, Jülich is one of the largest research institutions in Europe. Forschungszentrum Jülich’s headquarters are located between the cities of Aachen, Cologne, and Düsseldorf on the outskirts of the North Rhine-Westphalian town of Jülich. FZJ has 15 branch offices in Germany and abroad, including eight sites at European and international neutron and synchrotron radiation sources, two joint institutes with the University of Münster, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), and Helmholtz-Zentrum Berlin (HZB), and three offices of Project Management Jülich (PtJ) in the cities of Bonn, Rostock, and Berlin. Jülich cooperates closely with RWTH Aachen University within the Jülich Aachen Research Alliance (JARA). The institution was established on 11 December 1956 by the state of North Rhine-Westphalia as a registered association before it was renamed Nuclear Research Centre Jülich in 1967. In 1990, its name was changed to “Forschungszentrum Jülich GmbH”. History On 11 December 1956, the State Parliament of North Rhine-Westphalia decided to establish an “atomic research centre”. The Society for the Promotion of Nuclear Physics Research (GFKF) was thus established as a registered association (e. V.). Its founder is considered to be State Secretary Leo Brandt (Ministry of Economic Affairs and Transport of the Federal State of North Rhine-Westphalia). Several locations were considered but the decision was made in favour of the Stetternich forest in what was then the district of Jülich. The Society for the Promotion of Nuclear Physics Research (GFKF) was renamed Nuclear Research Centre Jülich (or KFA for short, which was taken from the German). Seven years later, it was converted into a limited liability company (GmbH), and in 1990, it was named Forschungszentrum Jülich GmbH. The partners of Forschungszentrum Jülich are the Federal Republic of Germany (90%) and the federal state of North Rhine-Westphalia (10%). MERLIN and DIDO In 1958, the foundation stone was laid for the research reactors MERLIN (FRJ-1) and DIDO (FRJ-2), and they went into operation in 1962. The FRJ-1 research reactor was decommissioned in 1985 and completely dismantled between 2000 and 2008. The FRJ-2 research reactor was a