The instrument suite of the European Spallation Source

An overview is provided of the 15 neutron beam instruments making up the initial instrument suite of the European Spallation Source (ESS), and being made available to the neutron user community. The ESS neutron source consists of a high-power accelerator and target station, providing a unique long-pulse time structure of slow neutrons. The design considerations behind the time structure, moderator geometry and instrument layout are presented. The 15-instrument suite consists of two small-angle instruments, two reflectometers, an imaging beamline, two single-crystal diffractometers; one for macromolecular crystallography and one for magnetism, two powder diffractometers, and an engineering diffractometer, as well as an array of five inelastic instruments comprising two chopper spectrometers, an inverse-geometry single-crystal excitations spectrometer, an instrument for vibrational spectroscopy and a high-resolution backscattering spectrometer. The conceptual design, performance and scientific drivers of each of these instruments are described. All of the instruments are designed to provide breakthrough new scientific capability, not currently available at existing facilities, building on the inherent strengths of the ESS long-pulse neutron source of high flux, flexible resolution and large bandwidth. Each of them is predicted to provide world-leading performance at an accelerator power of 2 MW. This technical capability translates into a very broad range of scientific capabilities. The composition of the instrument suite has been chosen to maximise the breadth and depth of the scientific impact o

Neutron Science in Europe Strengthening world-class research and innovation delivering economic and societal impact: Strengthening world-class research and innovation delivering economic and societal impact

International audienceFor many years Europe has had a powerful ecosystem of small, medium and large neutron facilities that was the envy of the world; supporting an expert community of 5000 researchers, and delivering science, innovation and competitive advantage through economic impact for European society.• Closures of a number of European facilities are reducing capacity and capability, which is limiting scientific discoveries and innovation at the same time as there is increasing competition from North America and Asia-Oceania. • There are opportunities to sustain European capability through bringing the European Spallation Source into operation, development and expansion of existing major facilities, and demonstrating the potential of High Current Accelerator-driven Neutron Sources.• A multi-institution ‘European Laboratory for Neutron Science’ could help to coordinate pan-European funding decisions, ensure efficient delivery and maximise economic impact.• Neutron research in Europe will continue to deliver competitive advantage and be a key contributor in addressing current and future societal challenges.Depuis de nombreuses années, l’Europe dispose d’un puissant écosystème d’installations neutroniques de petite, moyenne et grande taille qui faisait l’envie du monde entier ;soutenir une communauté d'experts de 5 000 chercheurs et offrir de la science, de l'innovation et un avantage concurrentiel grâce à l'économie.impact sur la société européenne.• Les fermetures d'un certain nombre d'installations européennes réduisent la capacité et les capacités, ce qui limite les découvertes scientifiques et l'innovation au niveau mondial.parallèlement à une concurrence croissante de l’Amérique du Nord et de l’Asie-Océanie.• Il existe des opportunités de maintenir la capacité européenne en mettant en service, en développant et en mettant en service la source européenne de spallation.l'expansion des principales installations existantes et la démonstration du potentiel des sources de neutrons pilotées par des accélérateurs à courant élevé.• Un « Laboratoire européen pour la science neutronique » multi-institutionnel pourrait aider à coordonner les décisions de financement paneuropéennes, à garantir deslivraison et maximiser l’impact économique.• La recherche sur les neutrons en Europe continuera à offrir un avantage concurrentiel et à contribuer de manière importante aux enjeux sociétaux actuels et futurs.défis

UCANS-8 in Paris Eighth International Meeting of the Union for Compact Accelerator-Driven Neutron Sources

International audienc