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<p>The Korea 4GSR requires a highly precise arrangement of electromagnets, undulators, vacuum chambers, and monitoring devices. These 4th generation accelerators demand micro-level electron beam control with exceptional precision. Specifically, Korea 4GSR is designed to achieve a narrow beam profile, with a target beam size of sub 4.5&#xa0;μm. To ensure this precision, developing a stable girder system capable of reliably supporting high-accuracy accelerator components is essential. The girder system must be stable enough to span an extensive circumference of approximately 800&#xa0;m, accommodate mechanical loads without deformation and respond effectively to dynamic conditions associated with the accelerator’s operating energy of 4&#xa0;GeV. Furthermore, the system should mitigate ground irregularities and ensure assembly stability during installation. This study aims to contribute to the stable beam operation of Korea 4GSR by developing a system capable of displacement control and vibration suppression within 10% of the beam size, a mechanical stability target required for next-generation synchrotron radiation facilities, based on a girder system with ensured stiffness.</p>

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Mechanical behavior of storage ring girders in Korea-4GSR under gravity and vibration loads

  • 期刊论文

  • 发表日期：

    2025年5月13日

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  • Gwang-Wook Hong,
  • Hong-Gi Lee,
  • Gyeongsu Jang,
  • Seungha Shin,
  • Taekyun Ha

摘要

The Korea 4GSR requires a highly precise arrangement of electromagnets, undulators, vacuum chambers, and monitoring devices. These 4th generation accelerators demand micro-level electron beam control with exceptional precision. Specifically, Korea 4GSR is designed to achieve a narrow beam profile, with a target beam size of sub 4.5 μm. To ensure this precision, developing a stable girder system capable of reliably supporting high-accuracy accelerator components is essential. The girder system must be stable enough to span an extensive circumference of approximately 800 m, accommodate mechanical loads without deformation and respond effectively to dynamic conditions associated with the accelerator’s operating energy of 4 GeV. Furthermore, the system should mitigate ground irregularities and ensure assembly stability during installation. This study aims to contribute to the stable beam operation of Korea 4GSR by developing a system capable of displacement control and vibration suppression within 10% of the beam size, a mechanical stability target required for next-generation synchrotron radiation facilities, based on a girder system with ensured stiffness.