The RAON accelerator is currently under construction to generate and accelerate stable ions and rare isotopes for various kinds of scientific programs, and it will be completed by the end of 2021. In the RAON accelerator, the beams generated by using ion sources such as electron cyclotron resonance ion source and isotope separation on-line can be used in high energy experiments such as a beam irradiation system and a muon spin rotation/relaxation/resonance system after having been accelerated by low energy and high energy superconducting linacs. After the high energy superconducting linac, the beam passes through the high energy beamline and then collides with the target. In 2015, the lattices of the high energy beamlines were designed achromatically to minimize the emittance growth. However, as the specification of magnets in the beamline was changed after first lattice design, a beam dynamics simulation has been performed newly, and beam loss studies have also been conducted. Here, we will present the simulation results for the beam dynamics and describe the beam loss studies performed on the high energy beamlines of the RAON accelerator.

中文翻译：

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RAON 加速器高能光束线的光束损失研究

RAON加速器目前正在建设中，用于产生和加速各种科学项目的稳定离子和稀有同位素，将于2021年底完成。 在RAON加速器中，利用电子回旋加速器等离子源产生的束流在线共振离子源和同位素分离，经低能高能超导直线加速器加速后，可用于束辐照系统和μ子自旋旋转/弛豫/共振系统等高能实验。经过高能超导直线加速器后，光束通过高能光束线与目标发生碰撞。2015 年，高能光束线的晶格被设计为消色差，以最大限度地减少发射率增长。然而，由于第一次晶格设计后光束线中的磁铁规格发生了变化，因此新进行了光束动力学模拟，并且还进行了光束损耗研究。在这里，我们将展示光束动力学的模拟结果，并描述对 RAON 加速器的高能光束线进行的光束损失研究。