The Advanced Photon Source, the largest synchrotron in the U.S., is aiming for an upgrade at the Argonne National Laboratory in Illinois. Scientists hope to turn it into an electron accelerator that uses specialized magnets to produce tightly focused X-ray beams. "There's a new technology that has come along and it's pretty revolutionary," said Brian Stephenson, director of APS. The Department of Energy still needs to approve the plan.
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