Advanced Photon Source

Advanced Photon Source (APS)

External view of the APS
General properties
Accelerator type	Storage ring
Beam type	Electron
Target type	Light source
Beam properties
Maximum energy	7 GeV
Maximum current	100 mA
Maximum brightness	6×1019 ph./s/0.1%/mm2/mrad2
Physical properties
Circumference	1,100 metres (3,600 ft)
Location	Lemont, Illinois
Institution	US-DoE
Dates of operation	1995 – present

The Advanced Photon Source (APS) at Argonne National Laboratory (in Lemont, Illinois) is a storage-ring-based high-energy X-ray light source facility. It is one of five X-ray light sources owned and funded by the U.S. Department of Energy Office of Science. The APS began operation on March 26, 1995. It is operated as a user facility, meaning that it is open to the world’s scientific community, and more than 5,500 researchers make use of its resources each year.