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English Caption: 

The National Synchrotron Light Source II (NSLS-II) at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory achieved "first light" on October 23, 2014, when operators opened the shutter to begin commissioning the first experimental station (called a beamline), allowing powerful x-rays to travel to a phosphor detector and capture the facility's first photons.

Here, a crowd gathers on the experimental floor of the National Synchrotron Light Source II to witness "first light," when the x-ray beam entered a beamline for the first time at the facility.

For more information, see the press release National Synchrotron Light Source II Achieves 'First Light.'

Image courtesy Brookhaven National Laboratory.