General Information

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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 NSLS-II General User and Partner User proposal submission deadline is January 31, 2016.  |   Proposal Submission Details

NSLS-II Beamline Development Pre-Proposals

Next Deadline: January 31 | Submission procedure  | Questions? Contact Qun Shen

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.

Beamline Projects

When fully built out, National Synchrotron Light Source II will accommodate approximately 60 to 70 beamlines. Thirty beamlines are currently in various stages of development and will provide significant research capacity in early operations.

NSLS users please note: The original National Synchrotron Light Source has permanently ceased operations. All future synchrotron studies at Brookhaven National Lab will be carried out at NSLS-II. Transition information.

Full Calendar


  1. DEC



    NSLS-II Town Meeting

    "NSLS-II Town Meeting"

    1 pm, Large Conference Room, Bldg. 703

    Friday, December 4, 2015, 1:00 pm

See all

Conferences & Workshops

There are no conferences scheduled at this time.

User Administration 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.