Diamond Light Source

Diamond Light Source
Name	Diamond Light Source
Caption	Aerial view of the Diamond Light Source facility
Coordinates	51, 34, 23, N...
Established	2007
Location	Harwell Science and Innovation Campus, Oxfordshire, United Kingdom
Type	Synchrotron light source
Energy	3 GeV
Circumference	561.6 m
Website	https://www.diamond.ac.uk

Diamond Light Source is the United Kingdom's national synchrotron science facility, located at the Harwell Science and Innovation Campus in Oxfordshire. Operating as a major Big Science project, it produces intense beams of light from the infrared to X-rays used by researchers across academic and industrial fields. The facility supports investigations in areas ranging from structural biology and chemistry to materials science and cultural heritage, enabling discoveries that address global challenges. Funded by the UK Research and Innovation through the Science and Technology Facilities Council and the Wellcome Trust, it is a cornerstone of the nation's scientific infrastructure.

Overview

The facility is a third-generation synchrotron where electrons, accelerated to near the speed of light, emit extremely bright light as they travel around a storage ring. This light is channelled into specialised laboratories known as beamlines, where experiments are conducted. The machine itself is housed in a distinctive doughnut-shaped building with a circumference of over 500 metres, situated on the historic Harwell Science and Innovation Campus, a site with a legacy in nuclear and energy research. As a user facility, it operates 24 hours a day, providing access to thousands of scientists from across the United Kingdom, Europe, and internationally each year, supporting a vast portfolio of research.

History and development

The project was conceived in the 1990s to replace the aging Synchrotron Radiation Source at the Daresbury Laboratory in Cheshire. A key milestone was the approval of funding in 2000, with construction beginning in 2003 on land provided by the United Kingdom Atomic Energy Authority. The facility was officially opened by Queen Elizabeth II in October 2007. The name "Diamond" was chosen to reflect both the carbon-based structure of the machine's insertion devices and the traditional association of diamonds with cutting-edge science and precision. Its development was a collaborative effort involving the Science and Technology Facilities Council, the Wellcome Trust, and the former Department for Trade and Industry.

Scientific capabilities and beamlines

The heart of the machine is the 3 GeV electron storage ring, which feeds over thirty operational beamlines, each tailored for specific experimental techniques. These include high-resolution X-ray diffraction for determining protein structures, X-ray absorption spectroscopy for analysing chemical states, and soft X-ray microscopy for imaging biological samples. Notable beamlines include I03 for macromolecular crystallography, I13 for imaging and coherence, and I18 for microfocus spectroscopy. The facility also houses the electron Bioimaging Centre, which integrates correlative imaging techniques. Continuous upgrades, such as the installation of new undulators and monochromator systems, ensure the beams remain at the forefront of brightness and stability.

Research applications

Research conducted here has contributed to significant advances across multiple disciplines. In the life sciences, it has been instrumental in determining the structures of proteins critical for understanding diseases like COVID-19 and Alzheimer's disease. In physical sciences, it aids in developing new battery materials, catalysts for clean energy, and advanced semiconductors. Studies in earth and environmental sciences analyse geological samples and pollutants, while work in cultural heritage has revealed hidden details in artifacts like the Mary Rose timbers and ancient papyrus scrolls. Industrial partners, including GlaxoSmithKline, Rolls-Royce, and Johnson Matthey, use the facility for proprietary research and development.

Organisation and operation

The facility is operated by Diamond Light Source Ltd, a joint venture between the Science and Technology Facilities Council and the Wellcome Trust. It is governed by a Board of Directors and receives strategic guidance from a Science Advisory Committee. Access to beamtime is granted through a competitive peer-review process managed by proposal review panels. The staff of over 500 includes scientists, engineers, and technical support personnel who maintain the accelerator complex, develop beamlines, and assist users. The facility collaborates closely with other major research centres, including the European Synchrotron Radiation Facility in Grenoble and the Advanced Photon Source in the United States.

Future developments

A major upgrade programme, known as Diamond-II, is underway to replace the existing storage ring with a new hybrid multi-bend achromat lattice. This will increase the brightness of the X-ray beams by up to 100 times and reduce beam size for enhanced resolution. The project also involves constructing new beamlines and upgrading existing ones, with full operation anticipated before 2030. This development will ensure the facility remains competitive with next-generation sources like the Extreme Light Infrastructure and the Advanced Light Source upgrade, securing the United Kingdom's position in global synchrotron science for decades to come.

Category:Research institutes in the United Kingdom Category:Synchrotron radiation facilities Category:Buildings and structures in Oxfordshire Category:Harwell Science and Innovation Campus