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Photon Sciences Directorate at Brookhaven National Laboratory

About the Facilities


NSLS Aerial

  • Began operating in 1982
  • FY10 operating budget of $38.5 million
  • Over 2,000 scientists come each year to do experiments
  • 60 beamlines: 49 on X-Ray Ring and 11 on Vacuum Ultraviolet Ring
  • VUV Ring operating energy: 800 MeV
  • X-Ray Ring operating energy: 2.8 GeV
  • Runs 24 hours a day, seven days a week, more than 250 days a year
  • Injection system accelerates electrons to 99.99998 percent light speed



  • Will be 10,000 times brighter than NSLS, with 3 GeV ring energy and 500 mA stored current with top-off injection
  • At full capacity, will have more than 60 beamlines
  • Construction requires 2,900 tons of steel and 41,000 cubic yards of concrete
  • Will have 600,000 square feet of space total
  • Ring building, nearing completion, has outside circumference of 913 meters (just over half a mile)
  • When operating, will draw up to 20 megawatts of power
  • Will require 2,500 tons of mechanical refrigeration and 1,800 tons of cooling tower capacity