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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.

This image shows inside the beamline enclosure, where a phosphor detector (the rectangle at right) captured the first x-rays (in white) which hit the mark dead center.

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

Image courtesy Brookhaven National Laboratory.