Close-up of the connection between two magnets on one of the 200 modules that will make up the new APS storage ring. The vacuum system, which recreates the vacuum of deep space to keep the electron beam from coming in contact with the atmosphere, can be seen stretching between the two magnets. Image by Jason Creps, Argonne National Laboratory. 

A row of partially assembled modules for the new APS storage ring. Modules are assembled in a warehouse off of the Argonne site and will be transported to the APS for installation. Image by Jason Creps, Argonne National Laboratory. 

Group shot of the team assembling modules for the new APS storage ring, gathered around the 100th fully assembled module. The new ring will be made up of 200 of these modules, built at a warehouse off of the Argonne site. Other completed modules can be seen in the background. Image by Jason Creps, Argonne National Laboratory. 

Argonne Laboratory Director Paul Kearns, seated, starts the countdown that shuttered the APS beamlines for the final time before the year-long APS Upgrade removal and installation period. Leaders from Argonne, the APS and the U.S. Department of Energy joined the celebration in the APS main control room. Image by Jason Creps, Argonne National Laboratory. 

The newly constructed Long Beamline Building, which will house two of the new feature beamlines that will be built as part of the APS Upgrade. (Image by J.J. Starr, Argonne National Laboratory.)

Members of the APS Upgrade team work on the first fully assembled sector of the new electron storage ring at the heart of the upgraded APS. The 1,321 magnets that make up the new storage ring will be assembled into 200 modules, and those modules assembled into 40 full sectors for installation at the APS. (Image by Jason Creps, Argonne National Laboratory.)

Scientists inspect the new Resonant Inelastic X-ray Scattering (RIXS) spectrometer, the first APS Upgrade-funded beamline enhancement to become available to users. The new RIXS equipment has been installed at beamline 27-ID. (Image by Jason Creps, Argonne National Laboratory.)

Close-up of one of the 1,321 magnets that will make up the new APS electron storage ring. Magnets are being assembled into modules at an offsite location by the APS Upgrade team. (Image by Jason Creps, Argonne National Laboratory.)

View of a partially assembled magnet module for the APS Upgrade Project. The new electron storage ring will be made up of 1,321 magnets assembled into 200 modules, each aligned to within half the width of a human hair. (Image by Jason Creps, Argonne National Laboratory.)

More than 60 of the needed 200 magnet modules have been partially assembled and are in storage. Once they are fully assembled, these modules will be prepared for transport to the APS during the year-long installation period, scheduled to begin in April 2023. (Image by Jason Creps, Argonne National Laboratory.)