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Physics > Accelerator Physics

arXiv:2401.14739 (physics)
[Submitted on 26 Jan 2024]

Title:Machine-learning approach for operating electron beam at KEK $e^-/e^+$ injector Linac

Authors:Gaku Mitsuka, Shinnosuke Kato, Naoko Iida, Takuya Natsui, Masanori Satoh
View a PDF of the paper titled Machine-learning approach for operating electron beam at KEK $e^-/e^+$ injector Linac, by Gaku Mitsuka and 4 other authors
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Abstract:In current accelerators, numerous parameters and monitored values are to be adjusted and evaluated, respectively. In addition, fine adjustments are required to achieve the target performance. Therefore, the conventional accelerator-operation method, in which experts manually adjust the parameters, is reaching its limits. We are currently investigating the use of machine learning for accelerator tuning as an alternative to expert-based tuning. In recent years, machine-learning algorithms have progressed significantly in terms of speed, sensitivity, and application range. In addition, various libraries are available from different vendors and are relatively easy to use. Herein, we report the results of electron-beam tuning experiments using Bayesian optimization, a tree-structured Parzen estimator, and a covariance matrix-adaptation evolution strategy. Beam-tuning experiments are performed at the KEK $e^-$/$e^+$ injector Linac to maximize the electron-beam charge and reduce the energy-dispersion function. In each case, the performance achieved is comparable to that of a skilled expert.
Subjects: Accelerator Physics (physics.acc-ph)
Cite as: arXiv:2401.14739 [physics.acc-ph]
  (or arXiv:2401.14739v1 [physics.acc-ph] for this version)
  https://doi.org/10.48550/arXiv.2401.14739
arXiv-issued DOI via DataCite

Submission history

From: Gaku Mitsuka [view email]
[v1] Fri, 26 Jan 2024 10:02:51 UTC (471 KB)
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