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National Synchrotron Light Source II

NSLS-II is a state-of-the-art 3 GeV electron storage ring. The facility offers scientific and industrial researchers an array of beamlines with x-ray, ultraviolet, and infrared light to enable discoveries in clean and affordable energy, high-temperature superconductivity, molecular electronics, and more. Overview »


The next deadline for NSLS-II beam time proposals and beam time requests is May 31, 2019.  |   Submission Details

Become a Facility User

Beamlines at the National Synchrotron Light Source II are open to academic and industrial users for scientific research. All research proposals are subjected to peer review and ranked against competing proposals based on scientific merit.

NSLS-II Beamlines

NSLS-II’s beamlines and experimental stations offer unique, cutting-edge research tools for a wide variety of scientific areas. All beamlines are organized into six science programs, based on the research capabilities and expertise they offer.

Full Calendar


  1. FEB



    NSLS-II Friday Lunchtime Seminar

    "Formation and dynamics of organo-mineral associations in redoximorphic soils"

    Presented by Selina Tenzer, University of Hohenheim, Germany

    12 pm, NSLS-II Bldg. 743 Room 156

    Friday, February 22, 2019, 12:00 pm

    Hosted by: Ignace Jarrige

    Dissolved soil organic matter (SOM) hinders the crystal growth of Fe and Mn oxides but promotes the formation of metal-OM complexes. The strength of the interactions between SOM and the Fe(O,OH)6-octahedra depends, besides pH and ionic strength, on the available functional groups. We investigate the formation of oxides under alternating redox conditions in the presence of two isotopically labelled organic model substances: vanillin (lignin component with a reactive phenol group) and alanine (amino acid with a carboxyl and an amino group). Combining XRF, µXANES and µXRD at 5-ID will allow to identify Fe and Mn oxides, describe their crystallinity and estimate the importance of organic forms of Fe and Mn. Later, we will study the spatial distribution of vanillin and alanine across mineral surfaces by NanoSIMS.

  2. MAR



    NSLS-II Colloquium

    "Challenges of Future Very Short Wavelength X-ray Free-Electron Lasers"

    Presented by Bruce Eric Carlsten, Los Alamos National Laboratory

    4 pm, Large Seminar Room, Bldg. 510

    Thursday, March 14, 2019, 4:00 pm

    Hosted by: John Hill

    Future X-ray Free-Electron Lasers (XFELs) will produce coherent X-rays with energies greater than 20 keV, which will require electron beams with lower laboratory emittances and relative energy spreads than those in current XFELs such as LCLS or the European XFEL. To satisfy this requirement, electron beam energies will need to be higher than in current XFEL designs if conventional accelerator architectures are used, leading to increased construction and operation costs. To provide design margin for these future XFELs at the lowest possible electron beam energies, novel schemes may be employed to suppress or eliminate the present limitations in XFEL performance. This talk will describe the dominant electron-beam instabilities and other effects (coherent synchrotron radiation, undulator resistive wall wakes, microbunch instability, and intrabeam scattering) and will describe a novel accelerator architecture to suppress the worst effects from them. Design trades to improve performance at lower beam energies will also be described. The baseline parameters for the proposed XFEL at Los Alamos (the MaRIE XFEL, designed to have an X-ray energy of 42 keV) will be used to illustrate these effects.

  3. APR



    NSLS-II Colloquium

    "NASA's Mars 2020 Mission – First Steps towards Mars Sample Return"

    Presented by Kenneth Farley, Caltech

    4 pm, Large Seminar Room, Bldg. 510

    Thursday, April 11, 2019, 4:00 pm

    Hosted by: John Hill

    Scientists have advocated for the return of samples from Mars for decades. The quest has finally begun in earnest: the Jet Propulsion Laboratory is in the final stages of construction of the Mars 2020 mission. Mars 2020 builds on the highly successful design of the Mars Science Laboratory (Curiosity Rover) and is updated with new landing capabilities, scientific instruments, and a very sophisticated rock sample collection system. Mars 2020's chief goals are to unravel the geology of its landing site, seek evidence of potential Martian biosignatures, and prepare a cache of several dozen samples for possible return to Earth by a future element of a notional Mars Sample Return campaign. NASA recently selected the mission's destination: Jezero Crater. This crater once held a very deep lake comparable in size to Lake Tahoe. Key geologic targets at the site include ancient Martian bedrock, lake sediments and especially a remarkably preserved river delta, and unusual carbonate-bearing rocks possibly precipitated from lake-water. Mars 2020 will launch in the summer of 2020, land on February 18, 2021, and rove the surface for at least two years. I am Project Scientist for Mars 2020 and will describe the goals and development of this mission, and of Mars sample return.

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Conferences & Workshops

  1. JUN



    4th International Conference on Resonant Elastic X-ray Scattering (REXS 2019)

    June 17-21, 2019

  2. JUN



    11th International Conference on Inelastic X-ray Scattering (IXS2019)

    June 23-28, 2019

  3. JUL



    Teacher Training: Exploring Proteins with a New Light

    July 1-3, 2019

User Services Office

Brookhaven National Laboratory
743 Brookhaven Avenue
Building 743
Upton, NY 11973-5000

(631) 344-8737 | | website

Visiting NSLS-II

If you are a contractor or vendor coming to NSLS-II for the day, please work with your host to gain access to the Lab site. If you will be on site for more than one day, please contact the Guest, User, and Visitor Center for access and training requirements. See maps and directions for getting here.