THPB093

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URL	https://doi.org/10.18429/JACoW-IPAC2025-THPB093
Title	Current status of permanent magnet radiation resiliency studies at CEBAF
Authors	R. Bodenstein, B. Gamage, B. Mosbrucker, C. Decker, D. Hamlette, E. Nissen, J. Samari, J. Gubeli, J. Meyers, K. Deitrick, M. Janak, M. Smith, N. Wilson, S. Shriner Thomas Jefferson National Accelerator Facility B. Shepherd Science and Technology Facilities Council L. Nevay European Organization for Nuclear Research S. Brooks Brookhaven National Laboratory S. Boogert Cockcroft Institute W. Shields Royal Holloway University of London
Abstract	One possible future for Jefferson Lab’s Continuous Electron Beam Accelerator Facility (CEBAF) lies in upgrading its maximum nominal energy using Fixed-Field Alternating-gradient (FFA) technology for its recirculating arcs. The current proposal aims to use permanent magnets to supply the fixed fields. One concern among reviewers is the degradation of these permanent magnets during operation due to the radiation environment in which they will be present. This work, funded by a Laboratory Directed R&D grant, aims to measure the magnet degradation in the CEBAF tunnel enclosure, and extrapolate to the energies expected from the upgrade. We present the latest results of this study, as well as plans moving forward.
Paper	download: THPB093.pdf
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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	30 May 2025
Accepted	31 May 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-THPB093
Pages	2664-2667
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.