National Synchrotron Light Source II

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NSLS-II
NSLS-II Aerial.jpg
An aerial view of the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory
National Synchrotron Light Source II
General information
TypeResearch and Development Facility
Location Upton, New York, United States
Coordinates 40°51′55.38″N72°52′19.71″W / 40.8653833°N 72.8721417°W / 40.8653833; -72.8721417
Construction started2009
Completed2015 [1]
CostUS$912 million
Owner United States Department of Energy
Technical details
Floor area400,000 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]

Contents

Exterior of National Synchrotron Light Source II facility, taken 22 July 2012 during Brookhaven National Laboratory "Summer Sundays" public tour. National Synchrotron Light Source II.jpg
Exterior of National Synchrotron Light Source II facility, taken 22 July 2012 during Brookhaven National Laboratory "Summer Sundays" public tour.

Users and partners

Users

In order to use the NSLS-II, researchers submit a peer-reviewed proposal. [5] In 2023, NSLS-II served over 1,885 unique researchers from academic, industrial, and government laboratories worldwide. [6]

Partners

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 ]

Beamlines

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 seven science programs: hard X-ray methods, spectroscopy, imaging and microscopy, bioimaging, structural biology, electronic structure techniques, and complex scattering. These programs group beamlines together that offer similar types of research techniques for studying the behavior and structure of matter.

Hard X-ray methods

Spectroscopy

Imaging and microscopy

Structural biology

Bioimaging

Soft X-ray scattering & spectroscopy

Complex scattering

Storage ring parameters

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).

Storage ring lattice

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:

Radiation sources

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]

History

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] John Hill served as director of NSLS-II from 2015-2023 before becoming Deputy Director for Science and Technology at Brookhaven. [11] Erik Johnson served as interim NSLS-II director [12] for one year from August 2023. The current NSLS-II director, Elke Arenholz, assumed the position effective August 2024. [13] The facility celebrated 10 years of operations in October 2024, with more than 15,000 beam time requests, 6,000 users, and 3,200 publications from the first nine years of operations. [6] [14]

References

  1. ↑ "National Synchrotron Light Source II Celebrates Two Years of User Operations". hpcwire.com. Retrieved 6 September 2017.
  2. ↑ "First Concrete Poured for NSLS-II Ring Building". bnl.gov. Retrieved 28 March 2011.
  3. ↑ "NSLS-II Contract Will Mean Hundreds of Jobs for Long Island". bnl.gov. Retrieved 28 March 2011.
  4. ↑ "BNL Photon Sciences | About NSLS-II". www.bnl.gov. Retrieved 2017-11-21.
  5. ↑ "BNL | NSLS-II User Guide | Guide to Proposal Types". www.bnl.gov. Retrieved 2024-04-26.
  6. 1 2 "NSLS-II Celebrates 10 Years of Operations in 2024". Brookhaven National Laboratory. Retrieved 2025-10-18.
  7. ↑ "BNL | Photon Sciences | Beamline Directory". www.bnl.gov. Retrieved 2021-03-28.
  8. ↑ "New Tools for New Light Source at Brookhaven Lab". Brookhaven National Laboratory. Retrieved 2024-06-10.
  9. ↑ "BNL | NSLS-II Accelerator Parameters". www.bnl.gov. Retrieved 2025-10-18.
  10. ↑ "Brookhaven National Laboratories | Construction bim | Torcon". www.torcon.com.
  11. ↑ "John Hill Named Brookhaven Lab's Deputy Director for Science and Technology". Brookhaven National Laboratory. Retrieved 2025-10-18.
  12. ↑ "Erik Johnson Named Interim Director of NSLS-II". Brookhaven National Laboratory. Retrieved 2025-10-18.
  13. ↑ "Elke Arenholz Named Director of the National Synchrotron Light Source II at Brookhaven Lab". Brookhaven National Laboratory. Retrieved 2025-10-18.
  14. ↑ "BNL | National Synchrotron Light Source II | First Light 10th Anniversary". www.bnl.gov. Retrieved 2025-10-18.

40°51′55.38″N72°52′19.71″W / 40.8653833°N 72.8721417°W / 40.8653833; -72.8721417 (NSLS-II)

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