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Results of on-line orbit correction at the medium energy beam transport section of the RAON accelerator

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Abstract

As the first stage of the RAON accelerator project will be completed in early 2023, the beam commissioning of the low-energy superconducting accelerator section is in progress. The beam generated from an ECR ion source passes through the medium energy beam transport (MEBT) section for the beam matching in transverse and longitudinal directions before entering the low-energy superconducting accelerator section. For this purpose, quadrupole magnets and re-buncher cavities are installed in the MEBT section. However, machine errors of these devices affect the beam trajectory, and it can cause unexpected beam loss in the MEBT section or the subsequent superconducting accelerator section. In order to prevent this effect, steering magnets and beam position monitors are installed in the MEBT section, and the orbit correction is necessary to stabilize the trajectory of the beam using these devices. In this paper, we will explain the results of beam dynamics simulations with machine errors and describe the experiment results of on-line orbit correction at the MEBT section of the RAON accelerator.

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Acknowledgements

We thank colleagues who participated in the injector beam commissioning. This work was supported by the Rare Isotope Science Project of Institute for Basic Science funded by Ministry of Science, ICT and NRF of Korea (2013M7A1A1075764).

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Authors and Affiliations

  1. Rare Isotope Science Project, Institute for Basic Science, Daejeon, 34000, Korea

    Hyunchang Jin, Dong-O. Jeon & Ji-Ho Jang

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  1. Hyunchang Jin
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  2. Dong-O. Jeon
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  3. Ji-Ho Jang
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Correspondence to Hyunchang Jin.

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Jin, H., Jeon, DO. & Jang, JH. Results of on-line orbit correction at the medium energy beam transport section of the RAON accelerator. J. Korean Phys. Soc. 83, 854–861 (2023). https://doi.org/10.1007/s40042-023-00919-2

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  • DOI: https://doi.org/10.1007/s40042-023-00919-2

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