Speaker
Description
The proposed energy upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) incorporates Fixed-Field Alternating-gradient (FFA) arcs utilizing permanent magnet technology. Given the radiation environment within the CEBAF tunnel enclosure, validating the long-term magnetic stability of these materials is a critical step for the project's technical feasibility. This contribution presents an overview of the ongoing permanent magnet radiation resiliency program at Jefferson Lab, which has expanded into one of the largest and most comprehensive in-situ studies of its type ever performed in an accelerator environment. We briefly review the experimental methodology used to monitor demagnetization and summarize the operational experience from the initial data-taking campaign. Furthermore, we discuss the upgrades implemented for the second exposure campaign, currently underway, which aims to refine dose correlation and reduce systematic uncertainties. We report on the latest results from the program and the roadmap for certifying permanent magnet optics for the proposed upgrade energies.
Footnotes
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contract No. 89243126CSC000213 . The research described in this work was conducted under the Laboratory Directed Research and Development Program at Thomas Jefferson National Accelerator Facility for the U.S. Department of Energy.
Funding Agency
This material is based upon work supported by the U.S. Department of Energy, Office of Scien The research described in this work was conducted under the Laboratory Directed Research and Development Pr
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