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<p>The RAON (Rare Isotope Accelerator complex for ON-line experiments) facility in Korea is entering a new era of precision nuclear physics including studies of exotic nuclei near the neutron drip line. In this work, we demonstrate how large-scale simulations performed on national supercomputing systems directly support RAON experiments. Using the KISTI-5 supercomputer (Nurion, 25.7 PFLOPS), we carried out Geant4-based heavy-ion beam simulations and ab initio nuclear-structure calculations that contributed to the determination of nuclear charge radii for neutron-deficient sodium isotopes. The forthcoming GPU-accelerated KISTI-6 supercomputer (600 PFLOPS) will significantly extend these capabilities enabling larger Nmax calculations, nuclear lattice effective field theory simulations for heavy nuclei, and systematic uncertainty quantification. The synergy between RAON experiments and KISTI-6 supercomputer establishes an integrated framework connecting theory, high-performance computing, and accelerator measurements.</p>

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Prospects for RAON experiments with the KISTI-6 supercomputer

  • 期刊论文

  • 发表日期：

    2026年3月24日

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  • Kihyeon Cho

摘要

The RAON (Rare Isotope Accelerator complex for ON-line experiments) facility in Korea is entering a new era of precision nuclear physics including studies of exotic nuclei near the neutron drip line. In this work, we demonstrate how large-scale simulations performed on national supercomputing systems directly support RAON experiments. Using the KISTI-5 supercomputer (Nurion, 25.7 PFLOPS), we carried out Geant4-based heavy-ion beam simulations and ab initio nuclear-structure calculations that contributed to the determination of nuclear charge radii for neutron-deficient sodium isotopes. The forthcoming GPU-accelerated KISTI-6 supercomputer (600 PFLOPS) will significantly extend these capabilities enabling larger Nmax calculations, nuclear lattice effective field theory simulations for heavy nuclei, and systematic uncertainty quantification. The synergy between RAON experiments and KISTI-6 supercomputer establishes an integrated framework connecting theory, high-performance computing, and accelerator measurements.