AVS 65th International Symposium & Exhibition
    Vacuum Technology Division Tuesday Sessions
       Session VT-TuM

Paper VT-TuM3
Vacuum System Design for Advanced Light Source Upgrade (ALS-U)

Tuesday, October 23, 2018, 8:40 am, Room 203B

Session: Large Vacuum Systems and Accelerator Vacuum Technology
Presenter: Sol Omolayo, Lawrence Berkeley Lab, University of California, Berkeley
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A project is underway to upgrade the existing Advanced Light Source (ALS) synchrotron. The goal of the project is to lower the horizontal emmitance to <75pm resulting in a 2 orders of magnitude increase in soft x-ray brightness. The design utilizes a multi-bend achromat (MBA) lattice which requires a small magnetic aperture of about 24mm. Consequently the vacuum aperture is very small down to 6mm in some areas. This narrow posses a challenge to the vacuum design due to the conductance limitation and space constraints for vacuum chambers. We present the conceptual vacuum design for the ALS-U.