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RIKEN SPring-8 Center AI-Assisted Beam Control Development Team

Team Leader: Hirokazu Maesaka (D.Sc.)

Research Summary

Hirokazu Maesaka

We are conducting the research on accelerator and beam control by applying state-of-the-art computing technologies, such as artificial intelligence. In particular, we are developing various algorithms to maximize the brilliance of synchrotron X-rays from the X-ray free-electron laser, SACLA, and the large synchrotron radiation facility, SPring-8, and to automatically operate the accelerators. We are exploring advanced methods to control accelerators by applying machine learning algorithms, such as Bayesian optimization, deep neural networks, and attention mechanisms, to beam data and computer simulation results.

Main Research Fields

  • Interdisciplinary Science & Engineering

Related Research Fields

  • Engineering
  • Informatics
  • Mathematical & Physical Sciences
  • Accelerators
  • Beam physics
  • Beam control

Keywords

  • X-ray free-electron laser
  • Synchrotron radiation
  • Machine Learning
  • Control system
  • Intelligent system

Selected Publications

  • 1. Iwai, E., Inoue, I., Maesaka, H., Inagaki, T., Yabashi, M., Hara, T., Tanaka, T.:
    "Spectral-brightness optimization of an X-ray free-electron laser by machine-learning-based tuning"
    Journal of Synchrotron Radiation 30, pp. 1048-1053 (2023).
  • 2. Masaki, M., Maesaka, H., Soutome, K., Takano, S., Watanabe, T., Kubota, K., Fujita, T., Dewa, H., Fukui, T., Sugimoto, T., Takeuchi, M., Tanaka, H.:
    "Adaptive feedforward control of closed orbit distortion caused by fast helicity-switching undulators"
    Journal of Synchrotron Radiation 28, pp. 1758-1768 (2021).
  • 3. Maesaka, H., Hara, T., Togawa, K., Inagaki, T., Tanaka, H.:
    "Brightness analysis of an electron beam with a complex profile",
    Physical Review Accelerators and Beams 21, p. 050703 (2018).

Lab Members

Principal investigator

Hirokazu Maesaka
Team Leader

Contact Information

Structural Biology Facility
1-1-1 Kouto, Sayo-cho
Sayo-gun, Hyogo
679-5148 Japan
Email: hirokazu.maesaka [at] riken.jp

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