CERN Accelerating science


European Spallation Source


The European Spallation Source is a research infrastructure committed to the goal of building and operating the world leading facility for research using neutrons. The ESS will deliver a neutron peak brightness of at least 30 times greater than the current state-of-the-art, thus providing the much-desired transformative capabilities for interdisciplinary research in the physical and life sciences.

ESS officially became a European Research Infrastructure Consortium (ERIC) in October 2015. The facility is under construction in Lund (Sweden), while the ESS Data Management and Software Centre (DMSC) will be located in Copenhagen (Denmark). The foreseen milestones include the beginning of the first on-site accelerator installations (Sep 2016), facility ready for accelerator beam on the target (Dec 2019), the first call for users’ proposals (2022), the machine installed for 2.0 GeV performance (Dec 2022), start user programme (2023), and the completion of the 16 construction phase instruments (Dec 2025).

ESS will be an attractive and environmentally sustainable large compound including industrial and laboratory buildings, office space, and guest accommodation facilities all housed within a significant architectural design that will make an impact on the world’s stage. Before the expected world-scale scientific impact is realised with the operation phase, the construction of the ESS already has a direct economic impact by generating growth and jobs, advancing development and fueling innovation potential in the Öresund region and across the EU. With ESS being built as a collaborative project, the growth effect will be shared between the host countries (Sweden and Denmark) and the ESS-ERIC partners. The realisation of ESS enables access to frontier technology, experienced technical and scientific staff as well as unique production facilities and technologies, which would otherwise be unattainable. In addition, the ESS will be a key instrument for addressing the Grand Challenges through novel insights on matter at the molecular and atomic level and applications to energy, carbon sequestration methods, health issues at biology level as well as drug development and delivery strategies, plant water-uptake processes of relevance for agriculture, novel data storage materials, and more.