Status of survey network and alignment

The rare isotope accelerator complex for on-line experiments (RAON) set up a survey network based on the rectangular coordinate system to ensure the installation and alignment of the accelerator and beamlines. Mounting monuments were installed at regular intervals on the floor and walls of the accelerator building to establish the survey network. That network was constructed by measuring the position of the monuments in the building, and the reference point of the RAON accelerator was determined. In areas where the beamline was obstructed by walls, the survey network was connected by establishing alignment through-holes to ensure accurate measurement. All accelerator devices used for initial-beam commissioning had been installed based on the survey network within the required alignment tolerances. This paper describes the status of RAON’s survey network and accelerator alignment.