High-brightness and high-repetition-rate thermionic electron gun for upgrade of a Japanese x-ray free-electron laser facility SACLA
SACLA is a Japanese x-ray free-electron laser (XFEL) facility that has been operating for academic and industrial users. A pulsed high-voltage electron gun equipped with a thermionic cathode made of a single-crystal CeB6 has been used to deliver high-brightness electron beams required for XFEL operation. Recently, an upgrade plan for SACLA based on electron-source technologies was proposed. This plan emphasizes not only upgrading the repetition rate but also improving XFEL light quality. The strategy and progress toward developing an ultimate thermionic electron gun for the SACLA upgrade are described in this paper.
Authors
- Takafumi Ishida (ORCID: https://orcid.org/0000-0002-0141-3961)
- Vitaliy Goryashko (ORCID: https://orcid.org/0000-0002-8217-1174)
- Tamotsu Magome (ORCID: https://orcid.org/0000-0002-7661-1786)
- Daisuke Satoh (ORCID: https://orcid.org/0000-0003-4120-8062)
- Makoto Kuwahara (ORCID: https://orcid.org/0000-0003-0046-5716)
- Yasutaka Tsuda (ORCID: https://orcid.org/0000-0003-4992-6237)
- Shuichi Ogawa (ORCID: https://orcid.org/0000-0002-6625-7904)
- Satoshi Yamamoto (ORCID: https://orcid.org/0000-0002-9865-0970)
- Akitaka Yoshigoe (ORCID: https://orcid.org/0000-0002-6332-7743)
- Anatoliy Opanasenko (ORCID: https://orcid.org/0000-0002-6301-2936)
- Kazuaki Togawa (ORCID: https://orcid.org/0000-0001-7339-1733)
- Hitoshi Sugawara
Institutions
- Nihon University (JP)
- Japan Atomic Energy Agency (JP)
- Uppsala University (SE)
- SPring-8 (JP)
- Japan Synchrotron Radiation Research Institute (JP)
- Nagoya University (JP)
- Kobe University (JP)
- National Institute of Advanced Industrial Science and Technology (JP)
Publication Details
- Journal
- Journal of Vacuum Science & Technology B Nanotechnology and Microelectronics Materials Processing Measurement and Phenomena
- Published
- 2026-11-06
- DOI
- https://doi.org/10.1116/6.0005845
- Primary Topic
- Particle Accelerators and Free-Electron Lasers
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- RIKEN