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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.

Beamlines are organized into six scientific programs, based on the research techniques they offer.

Hard X-ray Spectroscopy

Complex Scattering

Diffraction & In-Situ Scattering

Imaging and Microscopy

Soft X-ray Scattering & Spectroscopy

Structural Biology

Full Calendar


  1. 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. MAY



    2019 NSLS-II & CFN Joint Users' Meeting

    May 20-22, 2019

  2. JUN



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

    June 17-21, 2019

  3. JUN



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

    June 23-28, 2019

  4. 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.