European Synchrotron Radiation Facility

The European Synchrotron Radiation Facility (ESRF) is a joint research facility situated in Grenoble, France, and supported by 22 countries (13 member countries: France, Germany, Italy, UK, Spain, Switzerland, Belgium, The Netherlands, Denmark, Finland, Norway, Sweden, Russia and 9 associate countries: Austria, Portugal, Israel, Poland, Czech Republic, Hungary, Slovakia, India and South Africa).[1]

European Synchrotron
Radiation Facility
Installation européenne
de rayonnement synchrotron
ESRF site
FormationSeptember 30, 1994 (1994-09-30)
HeadquartersGrenoble, France
Official languages
English and French
LeaderFrancesco Sette
Websitewww.esrf.eu

Some 8,000 scientists visit this particle accelerator each year, conducting upwards of 2,000 experiments and producing around 1,800 scientific publications.[2]

History

Inaugurated in September 1994, it has an annual budget of around 100 million euros,[3] employs over 630 people and is host to more than 7,000 visiting scientists each year.

In 2009, the ESRF began a first major improvement in its capacities. With the creation of the new ultra-stable experimental hall of 8,000 m² in 2015, its X-rays are 100 times more powerful, with a power of 100 billion times that of hospital radiography devices.[4]

The second improvement to its facilities takes place between 2018 and 2020 and again improves its X-ray power by a factor of 100,[5] or 10,000 billion more powerful than X-rays used in the medical field. It becomes the first fourth generation high energy synchrotron in the world.[6]

The first electron beam tests begin on January 30, 2020.[5] The machine should be fully operational in summer 2020.[5]

General description
Top view of the ring

The ESRF physical plant consists of two main buildings: the experiment hall, containing the 844 metre circumference ring and forty tangential beamlines; and a block of laboratories, preparation suites, and offices connected to the ring by a pedestrian bridge. The linear accelerator electron gun and smaller booster ring used to bring the beam to an operating energy of 6 GeV are constructed within the main ring. Until recently bicycles were provided for use indoors in the ring's circumferential corridor. Unfortunately they have been removed after some minor accidents. But even before this it was not possible to cycle continuously all the way around, since some of the beamlines exit the hall.

Research at the ESRF focuses, in large part, on the use of X-ray radiation in fields as diverse as protein crystallography, earth science, paleontology, materials science, chemistry and physics. Facilities such as the ESRF offer a flux, energy range and resolution unachievable with conventional (laboratory) radiation sources.

Study results

In 2014, ancient books destroyed by the eruption of Mount Vesuvius in 79 are read for the first time in the ESRF. These 1840 fragments were reduced to the status of charred cylinders.[7][8]

In 2015, scientists from the University of Sheffield have used the ESRF's X-rays to study the blue and white feathers of the Jay and have found that birds use well-controlled changes to the nanostructure of their feathers to create the vivid colours of their plumage. This research opens new possibilities for creating non-fading, synthetic colours for paints and clothing.[9]

In July 2016, a team of South Africa researchers scans a complete fossilized skeleton of a small dinosaur discovered in 2005 in South Africa and older than 200 million years. The dentition of heterodontosauridae scanned revealed palate bones of less than a millimeter thick.[10][11]

On December 6, 2017, the journal Nature unveils the discovery at the European synchrotron of a new species of dinosaur with surprising characteristics and living about 72 million years ago. It is a biped, mix between a velociraptor, an ostrich and a swan with a crocodile muzzle and penguin wings. With a height of about 1.2 meters (4 ft) and with killer claws, he could hunt his prey on the ground or hunt by swimming in the water, which is a novelty for scientists in the study of dinosaurs.[12]

Access

The ESRF site forms part of the "Polygone Scientifique", lying at the confluence of the rivers Drac and Isère about 1.5 km from the centre of Grenoble. It is served by Grenoble tramway system and local bus lines of Semitag (C6, 22 and 54). It is served by Grenoble–Isère Airport and Lyon–Saint-Exupéry Airport.

The ESRF shares its site with several other institutions including the Institut Laue-Langevin (ILL), the European Molecular Biology Laboratory (EMBL) and the LNCMI. The Centre national de la recherche scientifique (CNRS) has an institute just across the road.

See also

References
  1. "Members and associates". ESRF.
  2. nature.com 29 March 2016, 24 hours at the X-ray factory.
  3. "Facts and figures". ESRF.
  4. dpaonthenet.net, World's brightest X-ray source shuts down for next-gen 100x more powerful.
  5. (in French) france3-regions.francetvinfo.fr, Grenoble : le premier faisceau de rayons X observé dans le synchrotron nouvelle génération.
  6. ESRF-EBS, The first high-energy fourth-generation synchrotron.
  7. "Ancient books destroyed by the eruption of Mount Vesuvius 'read' for the very first time".
  8. "Des papyrus antiques carbonisés déchiffrés à la lumière des rayons X". Le Monde (in French). 2015-01-20.
  9. "Nature's unique way of controlling colour explains why birds never go grey". sheffield.ac.uk.
  10. htxt.co.za Tiny Karoo fossil scanned by world’s largest X-ray machine.
  11. bbc.com Paul Rincon, X-rays reveal complete dino skeleton.
  12. www.eurekalert.org, Synchrotron sheds light on the amphibious lifestyle of a new raptorial dinosaur.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.