APS upgrade: Commissioning the world’s first light source based on swap-out injection
Year: 2026
Type: conference-paper
Abstract: The Advanced Photon Source (APS) has recently completed a major upgrade, replacing its 25-year-old storage ring with a cutting-edge hybrid seven-bend achromat lattice enhanced by six additional reverse bends. The new design achieves a natural emittance of 42 pm-rad, enabling the production of X-rays up to 500 times brighter than those generated by the original APS. A key innovation of the upgrade is the implementation of a swap-out injection scheme, which replaces entire depleted bunches instead of performing traditional top-up injection. This approach enables on-axis injection to accommodate for the reduced dynamic aperture resulting from strong focusing. This paper outlines the commissioning process, shares initial operating experience with swap-out injection, and presents performance data for new systems such as the bunch-lengthening cavity.
Source: JACOW
Authors: Sajaev,Vadim, Brill,Adam, Yang,Bingxin, Rafael,Fernando, Shen,Guobao, Bui,Hahn, Shang,Hairong, Dooling,Jeffrey, Carwardine,John, Calvey,Joseph, Harkay,Katherine, Emery,Louis, Smith,Martin, Borland,Michael, Kelly,Michael, Arnold,Ned, Kuklev,Nikita, Mohsen,Osama, Soliday,Robert, Lindberg,Ryan, Fors,Thomas, Berenc,Tim, Wienands,Uli, Cheng,Weixing, Sun,Yine
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7126041542
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