The Advanced Photon Source (APS)

THE APS UPGRADE: BUILDING A BRIGHTER FUTURE

The future of the Advanced Photon Source is about to get brighter. The APS is undergoing a massive upgrade that will replace the current electron storage ring with a new, more powerful model.

THE APS UPGRADE: BUILDING A BRIGHTER FUTURE

The future of the Advanced Photon Source is about to get brighter. The APS is undergoing a massive upgrade that will replace the current electron storage ring with a new, more powerful model.

THE APS UPGRADE: BUILDING A BRIGHTER FUTURE

The future of the Advanced Photon Source is about to get brighter. The APS is undergoing a massive upgrade that will replace the current electron storage ring with a new, more powerful model.

BEAMLINE COMMISSIONING IS UNDERWAY

The new Advanced Photon Source storage ring is complete and the facility’s beamlines are in the process of returning to scientific operation. Every APS beamline will undergo operational, technical and scientific commissioning before restarting its general user program. Initial operations will be at a reduced current and availability as the machine is tuned up.

Click here to see the current beamline progress chart. Updated July 21, 2025

Featured Photo

Users Junyoung Kwon and Jimin Kwak, center, with Argonne physicists Mary Upton, left, and Jung Ho Kim, right, at the newly upgraded beamline 27-ID. Image by Mark Lopez, Argonne National Laboratory.

Click here to see more photos from the APS Upgrade.