Louvain-la-Neuve Cyclotron  The Louvain-la-Neuve Cyclotron is a brutalist architectural complex of the University of Louvain built from 1970 to 1972 in Louvain-la-Neuve, Walloon Brabant, Belgium, notably holding UCLouvain's CYCLONE particle accelerators. It is the first building completed by the university when it moved following the Leuven crisis and was the largest cyclotron in Europe at the time of its construction. The Louvain Cyclotron can also refer to Belgium's first cyclotron built in Louvain ("Leuven") in 1947, which was replaced by the Louvain-la-Neuve center. In addition to two particle accelerators of the Cyclotron Research Center, the complex holds the UCLouvain Schools of Mathematics and Physics and corresponding research institutes, the Centre for Applied Molecular Technologies, the UCLouvain radiation protection service, a business incubator and a shared workspace. The Cyclotron is located at number 1, Chemin du Cyclotron, East of the city of Louvain-la-Neuve, between Boulevard Baudouin Ier, Avenue Louis de Geer and the Chemin du Cyclotron, and North of the Louvain-la-Neuve Science Park. After the Second World War, under the impetus of Professor Marc de Hemptinne, the Catholic University of Louvain began the construction of a cyclotron for the acceleration of deuterons in Heverlee, a suburb of the city of Louvain. The Heverlee cyclotron was built in 1947 and inaugurated in 1952. From 1952 to 1959, it was used to produce radioactive isotopes and fast neutrons. Later, the cyclotron was used for the study of nuclear reactions and for spectroscopy of very short-lived states. It was replaced by the research center in Louvain-la-Neuve, where the core of this first Belgian cyclotron is still visible, installed as a monument in front of the new cyclotron. The 6m3 core has been painted red. Louvain-la-Neuve undoubtedly ranks as the most ambitious of the cities built from scratch in Belgium. Forced to leave the city of Leuven during the Leuven crisis, the French-speaking part of the Catholic University of Leuven decides to move to a new location in 1968 on an agricultural plateau located North-East of Ottignies in Brabant, on the other side of Belgium's official language border, and started the construction of a new university town.