The Continuous Electron Beam Accelerator Facility at 12 GeV

arXiv - PHYS - Accelerator Physics Pub Date : 2024-08-29 DOI:arxiv-2408.16880

P. A. Adderley, S. Ahmed, T. Allison, R. Bachimanchi, K. Baggett, M. BastaniNejad, B. Bevins, M. Bevins, M. Bickley, R. M. Bodenstein, S. A. Bogacz, M. Bruker, A. Burrill, L. Cardman, J. Creel, Y. -C. Chao, G. Cheng, G. Ciovati, S. Chattopadhyay, J. Clark, W. A. Clemens, G. Croke, E. Daly, G. K. Davis, J. Delayen, S. U. De Silva, R. Dickson, M. Diaz, M. Drury, L. Doolittle, D. Douglas, E. Feldl, J. Fischer, A. Freyberger, V. Ganni, R. L. Geng, C. Ginsburg, J. Gomez, J. Grames, J. Gubeli, J. Guo, F. Hannon, J. Hansknecht, L. Harwood, J. Henry, C. Hernandez-Garcia, S. Higgins, D. Higinbotham, A. S. Hofler, T. Hiatt, J. Hogan, C. Hovater, A. Hutton, C. Jones, K. Jordan, M. Joyce, R. Kazimi, M. Keesee, M. J. Kelley, C. Keppel, A. Kimber, L. King, P. Kjeldsen, P. Kneisel, J. Koval, G. A. Krafft, G. Lahti, T. Larrieu, R. Lauze, C. Leemann, R. Legg, R. Li, F. Lin, D. Machie, J. Mammosser, K. Macha, K. Mahoney, F. Marhauser, B. Mastracci, J. Matalevich, J. McCarter, M. McCaughan, L. Merminga, R. Michaud, V. Morozov, C. Mounts, J. Musson, R. Nelson, W. Oren, R. B. Overton, G. Palacios-Serrano, H. -K. Park, L. Phillips, S. Philip, F. Pilat, T. Plawski, M. Poelker, P. Powers, T. Powers, J. Preble, T. Reilly, R. Rimmer, C. Reece, H. Robertson, Y. Roblin, C. Rode, T. Satogata, D. J. Seidman, A. Seryi, A. Shabalina, I. Shin, R. Slominski, C. Slominski, M. Spata, D. Spell, J. Spradlin, M. Stirbet, M. L. Stutzman, S. Suhring, K. Surles-Law, R. Suleiman, C. Tennant, H. Tian, D. Turner, M. Tiefenback, O. Trofimova, A. -M. Valente, H. Wang, Y. Wang, K. White, C. Whitlatch, T. Whitlatch, M. Wiseman, M. J. Wissman, G. Wu, S. Yang, B. Yunn, S. Zhang, Y. Zhang

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Abstract

This review paper describes the energy-upgraded CEBAF accelerator. This superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containing eighty-eight 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 beam delivered to each of the experimental halls is summarized in the appendix.

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12 GeV 连续电子束加速器设施

这篇综述论文介绍了能量升级后的 CEBAF 加速器。这台超导直线加速器通过增加11个新的高性能低温模块，实现了12 GeV的束流能量，这些低温模块包含88个超导腔，在20 MV/m的平均加速梯度下连续工作。在回顾了之前 6 GeV CEBAF 加速器的属性和性能之后，我们详细讨论了升级后的 CEBAF 加速器系统，并特别关注了新的束流加速系统。除了将每个直线加速器的加速度提高一倍之外，升级还包括改进束流再循环磁铁、增加氦冷却能力以允许新安装的模块在低温下运行、增加一个新的实验大厅以及改进加速器的许多其他组件。我们回顾了用于运行和分析加速器性能的几种技术，并记录了系统运行经验和性能。在本文件的最后部分，我们介绍了目前有关提高加速器性能和运营利润的项目规划，以及确保 CEBAF 在未来可靠运行的计划。附录中总结了向每个实验大厅输送的光束的性能和质量指标，供 CEBAF 的潜在用户参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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arXiv - PHYS - Accelerator Physics

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