Commissioning of the APS-Upgrade storage ring vacuum system

THP14
18 Sept 2025, 16:40
1h
The Loop

The Loop

Lund, Sweden
Poster Presentation Vacuum Thursday Poster Session

Speaker

Jason Carter (Argonne National Laboratory)

Description

The APS-Upgrade Project (APS-U) built a new electron 1100 meter circumference storage ring within the original APS tunnel. APS-U’s new storage ring vacuum system is a complex assembly of over 2500 custom vacuum chambers. The vacuum pumping system is a hybrid combination of NEG-coated vacuum chambers, ion pumps, and uncoated chambers with NEG strip pumping. APS-U began operations in April 2024 and by early 2025 has successfully commissioned the vacuum system to achieve low UHV operating pressures which helped the machine reach key performance parameters and allows for reliable delivery of beam to the users with minimal downtime. The commissioning performance of the machine indicates the NEG coated chambers are performing reliably even with a relatively minimal bakeout and activation. This presentation will share results and analysis of the vacuum system commissioning and performance along with lessons learned from the installation and operations phases.

Funding Agency

Work supported by U. S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.

Author

Jason Carter (Argonne National Laboratory)

Co-author

Tim Clute (Advanced Photon Source)

Presentation materials

There are no materials yet.