There is world-wide interest in diffraction-limited storage rings, with projects under development in Europe, Asia, South America and the United States to deploy this fourth-generation storage ring technology for the x-ray sciences. Plans are underway at Argonne National Laboratory to upgrade the Advanced Photon Source storage ring with a multi-bend achromat lattice to reduce the beam emittance by more than a factor of 50 relative to that achieved in present operation. Coupled with superconducting insertion devices, an upgraded APS will deliver hard x-ray brightness and coherent flux levels that are two to three orders of magnitude greater than that which can be achieved today. The APS Upgrade Project (APS-U) includes a new storage ring, optimized insertion devices, and a suite of best-in-class beamlines. The conceptual design for APS-U will be described as will the present status of the Project.

Argonne Physics Division Colloquium Schedule