ESRF-EBS

ESRF-EBS The ESRF-EBS is the upgraded storage ring of the European Synchrotron Radiation Facility situated in Grenoble, combining ultrabright X-ray production with advanced accelerator technology to serve scientists across Europe and worldwide. The facility enables research spanning structural biology, materials science, chemistry, geology and cultural heritage by delivering high-brilliance X-ray beams for imaging, spectroscopy and diffraction experiments. It operates within broader European research networks and partnerships involving national laboratories, universities and international consortia.

Overview

The ESRF-EBS upgrade transformed a third-generation facility into an ultralow-emittance storage ring, positioning the installation alongside other major infrastructures such as CERN, ESRF (original institution), Diamond Light Source, Advanced Photon Source, MAX IV Laboratory, SOLEIL, PETRA III, Spring-8, NSLS-II, European XFEL, ITER, Horizon 2020 projects and numerous European Commission initiatives. It serves users from institutions like CNRS, CEA, University of Grenoble Alpes, Imperial College London, Max Planck Society, European Molecular Biology Laboratory, CERN collaborations and national facilities across France, United Kingdom, Germany, Italy and beyond. The project interacts with funding and policy actors including ERC, European Investment Bank, Agence Nationale de la Recherche and regional authorities in Auvergne-Rhône-Alpes.

History and Upgrade to EBS

The original storage ring, built by an international team involving France, Germany, United Kingdom, Italy and other member states, began operations in 1988 following design efforts by accelerator physicists affiliated with CERN, DESY, INFN and academic groups at University of Oxford, University of Cambridge and École Normale Supérieure. Planning for a major upgrade accelerated in the 2000s with contributions from instrumentation groups at Max Planck Institute, Paul Scherrer Institute and Lawrence Berkeley National Laboratory, culminating in the Extremely Brilliant Source (EBS) project. The upgrade timeline intersected with procurement, civil engineering and commissioning phases involving contractors and partners such as Thales Group, Air Liquide, Bouygues and international consortia. Key milestones included magnet lattice redesign inspired by MAX IV multibend achromat concepts, installation of new insertion devices from manufacturers linked to Bruker and FMB Oxford, and beam commissioning drawing on expertise from SLAC National Accelerator Laboratory and Diamond Light Source.

Technical Specifications

The EBS lattice employs a multibend achromat design developed in dialogue with teams from MAX IV Laboratory and theoreticians from CERN and DESY, achieving ultralow horizontal emittance comparable to fourth-generation facilities like European XFEL and NSLS-II. The storage ring energy, RF systems and vacuum technology reflect engineering standards used at APS, PETRA III and Spring-8, with superconducting components and room-temperature magnets supplied by specialist firms linked to Siemens and ABB. Key technical parameters include lattice functions optimized for insertion devices produced by vendors with histories linked to FMB Oxford and Elettra Sincrotrone Trieste, radiofrequency cavities inspired by designs from KEK and cryogenic cooling systems influenced by CERN cryogenics development. Beam stability and feedback systems were implemented using diagnostics technologies pioneered at SLAC and Paul Scherrer Institute, while detector development drew on collaborations with European XFEL, DESY, Institut Laue-Langevin and industrial partners such as Dectris and DECTRIS-affiliated teams.

Scientific Applications and Research Highlights

EBS-enabled research spans macromolecular crystallography for groups including European Molecular Biology Laboratory, structural studies relevant to Wellcome Trust-funded consortia and pharmaceutical partners like Roche and Novartis; materials research linked to BMWK-supported projects and collaborations with Siemens and BASF; and high-pressure geoscience interacting with teams from University of Cambridge, ETH Zurich and Columbia University. Imaging and tomography at EBS benefits researchers from Max Planck Society, CNRS laboratories, Natural History Museum, London, Louvre Museum conservation scientists and archaeometry groups collaborating with UNESCO frameworks. Highlights include submicron coherent diffraction imaging studies by groups connected to University of Oxford and Imperial College London, operando battery research involving teams from Argonne National Laboratory and Lawrence Berkeley National Laboratory, and time-resolved experiments coordinated with investigators at University of California, Berkeley and Harvard University.

Facility Layout and Beamlines

The upgraded ring feeds more than thirty beamlines and experimental stations, following beamline architectures similar to those at Diamond Light Source and APS beamlines named for techniques such as macromolecular crystallography, X-ray absorption spectroscopy and coherent imaging. Beamline projects involved partnerships with academic consortia from University College London, University of Manchester, TU Munich and Politecnico di Milano, and instrumentation groups from ESRF member states. Sample environments and end-station developments engaged specialized suppliers with histories tied to Oxford Instruments, Janis Research and MTS Systems Corporation. The beamline layout integrates user support facilities, logistics handled with regional infrastructure stakeholders including Grenoble Alpes Metropole and campus partners like Université Grenoble Alpes.

Operations, Access, and User Program

Operational management follows governance practices involving the ESRF Council, user committees with representatives from CERN, European Commission research directorates, national funding agencies such as ANR, DFG, UKRI and international user organisations including IUCr-affiliated groups. Access is granted through peer-reviewed proposals assessed by scientific panels with members from Max Planck Society, European Molecular Biology Laboratory, Imperial College London and leading universities. Training and outreach programs collaborate with academic partners like École Polytechnique, ETH Zurich and Sorbonne University and industry liaison engages companies including Sanofi, GlaxoSmithKline and TotalEnergies.