NSLS-II | |
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General information | |
Type | Research and Development Facility |
Town or city | Upton, New York |
Country | United States |
Coordinates | 40°51′55.38″N72°52′19.71″W / 40.8653833°N 72.8721417°W |
Construction started | 2009 |
Completed | 2015 [1] |
Cost | US$912 million |
Owner | United States Department of Energy |
Technical details | |
Floor area | 400,000 sq ft (37,000 m2) [2] |
Design and construction | |
Architecture firm | HDR, Inc. |
Main contractor | Torcon, Inc. [3] |
Website | |
BNL: National Synchrotron Light Source II (NSLS-II) |
The National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory (BNL) in Upton, New York is a national user research facility funded primarily by the U.S. Department of Energy's (DOE) Office of Science. NSLS-II is a synchrotron light source, designed to produce X-rays 10,000 times brighter than BNL's original light source, the National Synchrotron Light Source (NSLS). NSLS-II supports research in energy security, advanced materials synthesis and manufacturing, environment, and human health. [4]
In order to use the NSLS-II, researchers submit a peer-reviewed proposal. [5] In the first five months of 2023, NSLS-II served over 1,200 researchers from academic, industrial, and government laboratories worldwide. [6]
NSLS-II has partners with public and private institutions which joined effort to fund the construction and operation of some of its beamlines. Its partnerships include BNL's Center for Functional Nanomaterials and the National Institute of Standards and Technology.[ citation needed ]
NSLS-II currently has 29 beamlines (experimental stations) open for operations. [7] When the facility is complete, NSLS-II is expected to "be capable of supporting some 58 beamlines in total." [8]
The beamlines at NSLS-II are grouped into five science programs: hard X-ray scattering & spectroscopy, imaging and microscopy, structural biology, soft X-ray scattering and spectroscopy, and complex scattering. These programs group beamlines together that offer similar types of research techniques for studying the behavior and structure of matter.
NSLS-II is a medium energy (3.0 GeV) electron storage ring designed to deliver photons with high average spectral brightness exceeding 1021 ph/s in the 2–10 keV energy range and a flux density exceeding 1015 ph/s in all spectral ranges. This performance requires the storage ring to support a very high-current electron beam (up to 500 mA) with a very small horizontal (down to 0.5 nm-rad) and vertical (8 pm-rad) emittance. The electron beam is stable in its position (<10% of its size), angle (<10% of its divergence), dimensions (<10%), and intensity (±0.5% variation).
The NSLS-II storage ring lattice consists of 30 double-bend achromat (DBA) cells that can accommodate at least 58 beamlines for experiments, distributed by type of source as follows:
Continuing the tradition established by the NSLS, NSLS-II radiation sources span a very wide spectral range, from the far infrared (down to 0.1 eV) to the very hard X-ray region (>300 keV). This is achieved by a combination of bending magnets, three-pole wigglers, and insertion device (ID) sources. [9]
Construction of NSLS-II began in 2009 and was completed in 2014. NSLS-II saw first light in October 2014. The facility cost $912,000,000 to build, and the project received the DOE's Secretary's Award of Excellence. Torcon Inc., headquartered in New Jersey, was the general contractor selected by the DOE for the project. [10]
Brookhaven National Laboratory (BNL) is a United States Department of Energy national laboratory located in Upton, Long Island, a hamlet of the Town of Brookhaven. It was formally established in 1947 at the site of Camp Upton, a former U.S. Army base. Located approximately 60 miles east of New York City, it is managed by Stony Brook University and Battelle Memorial Institute.
A synchrotron light source is a source of electromagnetic radiation (EM) usually produced by a storage ring, for scientific and technical purposes. First observed in synchrotrons, synchrotron light is now produced by storage rings and other specialized particle accelerators, typically accelerating electrons. Once the high-energy electron beam has been generated, it is directed into auxiliary components such as bending magnets and insertion devices in storage rings and free electron lasers. These supply the strong magnetic fields perpendicular to the beam that are needed to stimulate the high energy electrons to emit photons.
A synchrotron is a particular type of cyclic particle accelerator, descended from the cyclotron, in which the accelerating particle beam travels around a fixed closed-loop path. The magnetic field which bends the particle beam into its closed path increases with time during the accelerating process, being synchronized to the increasing kinetic energy of the particles.
The Advanced Photon Source (APS) at Argonne National Laboratory is a storage-ring-based high-energy X-ray light source facility. It is one of five X-ray light sources owned and funded by the U.S. Department of Energy Office of Science. The APS began operation on March 26, 1995. It is operated as a user facility, meaning that it is open to the world’s scientific community, and more than 5,500 researchers make use of its resources each year.
The Stanford Synchrotron Radiation Lightsource, a division of SLAC National Accelerator Laboratory, is operated by Stanford University for the Department of Energy. SSRL is a National User Facility which provides synchrotron radiation, a name given to electromagnetic radiation in the x-ray, ultraviolet, visible and infrared realms produced by electrons circulating in a storage ring at nearly the speed of light. The extremely bright light that is produced can be used to investigate various forms of matter ranging from objects of atomic and molecular size to man-made materials with unusual properties. The obtained information and knowledge is of great value to society, with impact in areas such as the environment, future technologies, health, biology, basic research, and education.
The Cornell Laboratory for Accelerator-based ScienceS and Education (CLASSE) is a particle accelerator facility located in Wilson Laboratory on the Cornell University campus in Ithaca, New York. CLASSE was formed by merging the Cornell High-Energy Synchrotron Source (CHESS) and the Laboratory for Elementary-Particle Physics (LEPP) in July 2006. Nigel Lockyer is the Director of CLASSE in spring of 2023.
The National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory (BNL) in Upton, New York was a national user research facility funded by the U.S. Department of Energy (DOE). Built from 1978 through 1984, and officially shut down on September 30, 2014, the NSLS was considered a second-generation synchrotron.
ALBA is a 3 GeV, third-generation synchrotron light source facility located in the Barcelona Synchrotron Park in Cerdanyola del Vallès near Barcelona, in Catalonia (Spain). It was constructed and is operated by CELLS, and co-financed by the Spanish central administration and regional Catalan Government.
The Australian Synchrotron is a 3 GeV national synchrotron radiation facility located in Clayton, in the south-eastern suburbs of Melbourne, Victoria. The facility opened in 2007, and is operated by the Australian Nuclear Science and Technology Organisation.
The European X-Ray Free-Electron Laser Facility is an X-ray research laser facility commissioned during 2017. The first laser pulses were produced in May 2017 and the facility started user operation in September 2017. The international project with twelve participating countries; nine shareholders at the time of commissioning, later joined by three other partners, is located in the German federal states of Hamburg and Schleswig-Holstein. A free-electron laser generates high-intensity electromagnetic radiation by accelerating electrons to relativistic speeds and directing them through special magnetic structures. The European XFEL is constructed such that the electrons produce X-ray light in synchronisation, resulting in high-intensity X-ray pulses with the properties of laser light and at intensities much brighter than those produced by conventional synchrotron light sources.
Laser-based angle-resolved photoemission spectroscopy is a form of angle-resolved photoemission spectroscopy that uses a laser as the light source. Photoemission spectroscopy is a powerful and sensitive experimental technique to study surface physics. It is based on the photoelectric effect originally observed by Heinrich Hertz in 1887 and later explained by Albert Einstein in 1905 that when a material is shone by light, the electrons can absorb photons and escape from the material with the kinetic energy: , where is the incident photon energy, the work function of the material. Since the kinetic energy of ejected electrons are highly associated with the internal electronic structure, by analyzing the photoelectron spectroscopy one can realize the fundamental physical and chemical properties of the material, such as the type and arrangement of local bonding, electronic structure and chemical composition.
Resonant inelastic X-ray scattering (RIXS) is an advanced X-ray spectroscopy technique.
ANKA is a synchrotron light source facility at the Karlsruhe Institute of Technology (KIT) in Karlsruhe, Germany. The KIT runs ANKA as a national synchrotron light source and as a large scale user facility for the international science community. Being a large scale machine of the performance category LK II of the Helmholtz Association, ANKA is part of a national and European infrastructure offering research services to scientific and commercial users for their purposes in research and development. The facility was opened to external users in 2003.
An energy recovery linac (ERL) is a type of linear particle accelerator that provides a beam of electrons used to produce x-rays by synchrotron radiation. First proposed in 1965 the idea gained interest since the early 2000s.
The Canadian Synchrotron Radiation Facility (CSRF) was Canada's national synchrotron facility from 1983 to 2005. Eventually consisting of three beamlines at the Synchrotron Radiation Center at the University of Wisconsin–Madison, USA, it served the Canadian synchrotron community until the opening of the Canadian Light Source in Saskatoon, Saskatchewan, finally ceasing operations in 2008.
Energy-dispersive X-ray diffraction (EDXRD) is an analytical technique for characterizing materials. It differs from conventional X-ray diffraction by using polychromatic photons as the source and is usually operated at a fixed angle. With no need for a goniometer, EDXRD is able to collect full diffraction patterns very quickly. EDXRD is almost exclusively used with synchrotron radiation which allows for measurement within real engineering materials.
SOLARIS is a synchrotron light source in the city of Kraków in Poland. It is the only one facility of its kind in Central-Eastern Europe. Built in 2015, under the auspices of the Jagiellonian University, it is located on the Campus of the 600th Anniversary of the Jagiellonian University Revival, in the southern part of the city. It is the central facility of the National Synchrotron Radiation Centre SOLARIS.
X-ray emission spectroscopy (XES) is a form of X-ray spectroscopy in which a core electron is excited by an incident x-ray photon and then this excited state decays by emitting an x-ray photon to fill the core hole. The energy of the emitted photon is the energy difference between the involved electronic levels. The analysis of the energy dependence of the emitted photons is the aim of the X-ray emission spectroscopy.
The National User Facilities are a set of large-scale scientific facilities maintained by the U.S. Department of Energy, Office of Science, whose roles are to provide the scientific community with world-leading scientific instruments to enable research. These facilities are generally free to use, and are open to scientists from all over the world, usually through the submission and evaluation of research proposals.
Nano Angle-Resolved Photoemission Spectroscopy (Nano-ARPES), is a variant of the experimental technique ARPES. It has the ability to precisely determine the electronic band structure of materials in momentum space with submicron lateral resolution. Due to its demanding experimental setup, this technique is much less extended than ARPES, widely used in condensed matter physics to experimentally determine the electronic properties of a broad range of crystalline materials. Nano-ARPES can access the electronic structure of well-ordered monocrystalline solids with high energy, momentum, and lateral resolution, even if they are nanometric or heterogeneous mesoscopic samples. Nano-ARPES technique is also based on Einstein's photoelectric effect, being photon-in electron-out spectroscopy, which has converted into an essential tool in studying the electronic structure of nanomaterials, like quantum and low dimensional materials.