Modules of the new APS storage ring installed in the tunnel. Photo by Mike Edelen, Argonne National Laboratory. 

Argonne Laboratory Director Paul Kearns visits the APS to see the progress of the new storage ring. Photo by Elmie Peoples-Evans, Argonne National Laboratory.

Two of the first modules of the upgraded APS electron storage ring, installed in sector 24 of the APS facility. Photo by Jim Kerby, Argonne National Laboratory. 

Completed modules of the new Advanced Photon Source storage ring ready to be transported and installed. Photo courtesy Aleksander Stankovik, Argonne National Laboratory. 

Argonne scientists Ali Mashayekhi, Peter Kenesei and Leighanne Gallington, from left, stand inside the newly constructed experiment enclosure for the High-Energy X-ray Microscope (HEXM). Image by Jon Almer, Argonne National Laboratory. 

The final girder of magnets to be removed from the Advanced Photon Source facility, surrounded by the team of contractors who completed the removal. Image by J.J. Starr, Argonne National Laboratory.

The final girder of magnets is removed from the APS storage ring facility. Image by J.J. Starr, Argonne National Laboratory.

The first removed module of the original APS storage ring, strapped to a truck for transport. The original modules will be removed one by one and taken to a storage area on the Argonne site. The upgraded APS storage ring will then be installed. Image by J.J. Starr, Argonne National Laboratory.

Workers remove the first module of the original APS storage ring. The original ring will be completely cleared out to make room for the new one, which will be transported module by module to the APS facility and installed. Image by J.J. Starr, Argonne National Laboratory.

A fully assembled module for the new APS storage ring. The new ring will be made up of 200 of these modules, combining precisely aligned electromagnets with a complex vacuum system and specially designed power systems. Image by Jason Creps, Argonne National Laboratory.