Vacuum system of the RAON

The vacuum requirements of the rare isotope accelerator complex for ON-line experiments (RAON) heavy ion accelerator was determined from beam optics calculations. The vacuum system was designed to meet vacuum requirements by using the 3D Molflow+ code with realistic outgassing values for the vacuum chambers, cavities, and beam pipes. This paper presents the specifications and configuration of the vacuum system, including pumps, gate valves, and vacuum gauges, of the superconducting LINAC 3 (SCL3) and beam transfer line to the low-energy experimental facility. In addition, we will discuss the results of the 3D Molflow+ calculations and the vacuum levels achieved after the installation of the vacuum system. The operational outcomes of the vacuum system demonstrate that the vacuum requirements are met for all sections.