The Photon Sciences Directorate operates the National
Synchrotron Light Source (NSLS) and is constructing the
National Synchrotron Light Source II (NSLS-II),
both funded by the Department of Energy Office of Science.
These facilities support a large community of scientists using photons (light) to carry out research in
energy and environmental sciences, physics, materials science, chemistry, biology and medicine.
One of ten national laboratories overseen and primarily funded by the Office of Science of the
U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical,
biomedical, and environmental sciences, as well as in energy technologies and national security.
Brookhaven Lab also builds and operates major scientific facilities available to university, industry
and government researchers. Brookhaven is operated and managed for DOE's Office of Science by Brookhaven
Science Associates, a limited-liability company founded by the Research Foundation for the State
University of New York on behalf of Stony Brook University, the largest academic user of Laboratory
facilities, and Battelle, a nonprofit applied science and technology organization.