TUCD2

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URL	https://doi.org/10.18429/JACoW-IPAC2025-TUCD2
Title	Commissioning of the Advanced Photon Source upgrade - the first swap-out injection-based synchrotron light source
Authors	V. Sajaev, A. Brill, B. Yang, F. Rafael, G. Shen, H. Bui, H. Shang, J. Dooling, J. Carwardine, J. Calvey, K. Harkay, L. Emery, M. Borland, M. Kelly, N. Arnold, N. Kuklev, O. Mohsen, R. Soliday, R. Lindberg, T. Fors, T. Berenc, U. Wienands, W. Cheng, Y. Sun Argonne National Laboratory M. Smith Advanced Photon Source
Abstract	The Advanced Photon Source (APS) recently completed a transformative upgrade, replacing its 25-year-old storage ring with a state-of-the-art hybrid seven-bend achromat lattice with six additional reverse bends. The new design features a low natural emittance of 42 pm-rad, enabling productions of X-rays up to 500 times brighter than the original APS. The upgrade introduced a pioneering swap-out injection scheme, replacing entire depleted bunches rather than topping them up. This approach enables on-axis injection to accommodate for the reduced dynamic aperture resulting from strong focusing. The paper describes the commissioning process, operating experience with swap-out injection, and gives performance parameters of new systems such as the bunch-lengthening cavity.
Paper	download: TUCD2.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	16th International Particle Accelerator Conference
Series
Location	Taipei, Taiwan
Date	01-06 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	* Ming-Chyuan Lin - National Synchrotron Radiation Research Center * Yoichi Sato - KEK * Jui-Che Huang - National Synchrotron Radiation Research Center * David Button - Australian Nuclear Science and Technology Organisation * Ping-Shun Chuang - National Synchrotron Radiation Research Center
Online ISBN	978-3-95450-248-6
Online ISSN	2673-5490
Received	27 May 2025
Revised	04 June 2025
Accepted	04 June 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-TUCD2
Pages	915-918
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.