Dear SEES Users,

As many of you know, the Advanced Photon Source (APS) is currently undergoing a major upgrade (APS-U) that will dramatically enhance the brightness and coherence of the X-ray source. This upgrade is well underway, with most of the new magnets installed and the commissioning of the new storage ring projected to start in early 2024. You can read more about APS-U here: https://www.aps.anl.gov/APS-Upgrade.

During the APS-U “dark period”, SEES personnel are working hard to ensure that the SEES-supported beamlines will come back better than ever after the upgrade is complete. Based on current projections from the APS, we anticipate commissioning beamlines during the summer of 2024, with a phased return to user operations in fall 2024 through winter 2025. For more details, please visit https://millenia.cars.aps.anl.gov/sees/aps-upgrade_status/.  We plan to update this page periodically, so please check back regularly for updates.

Regards,

Mark Rivers

SEES Chief Technology Officer