Document Type

Article

Publication Date

2024

DOI

10.1103/PhysRevAccelBeams.27.084802

Publication Title

Physical Review Accelerators and Beams

Volume

27

Issue

8

Pages

084802 (1-63)

Abstract

This review paper describes the energy-upgraded Continuous Electron Beam Accelerator Facility (CEBAF) accelerator. This superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containing 88 superconducting cavities that have operated cw at an average accelerating gradient of 20 MV/m. After reviewing the attributes and performance of the previous 6 GeV CEBAF accelerator, we discuss the upgraded CEBAF accelerator system in detail with particular attention paid to the new beam acceleration systems. In addition to doubling the acceleration in each linac, the upgrade included improving the beam recirculation magnets, adding more helium cooling capacity to allow the newly installed modules to run cold, adding a new experimental hall, and improving numerous other accelerator components. We review several of the techniques deployed to operate and analyze the accelerator performance and document system operating experience and performance. In the final portion of the document, we present much of the current planning regarding projects to improve accelerator performance and enhance operating margins, and our plans for ensuring CEBAF operates reliably into the future. For the benefit of potential users of CEBAF, the performance and quality measures for the beam delivered to each of the experimental halls are summarized in the Appendix.

Rights

© 2024 The Authors.

Published under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Original Publication Citation

Adderley, P. A., Ahmed, S., Allison, T., Bachimanchi, R., Baggett, K., Bastaninejad, M., Bevins, B., Bevins, M., Bickley, M., Bodenstein, R. M., Bogacz, S. A., Bruker, M., Burrill, A., Cardman, L., Creel, J., Chao, Y. C., Cheng, G., Ciovati, G., Chattopadhyay, S., . . . Zhang, Y. (2024). The Continuous Electron Beam Accelerator Facility at 12 GeV. Physical Review Accelerators and Beams, 27(8), Article 084802. https://doi.org/10.1103/PhysRevAccelBeams.27.084802

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