Design of Transport Beams Arrangement in Target Area of SG-III Facility

In target area of Inertial Confinement Fusion (ICF) facility, the rectangular beams arrangement at the main amplifier (MA) output is mapped to the spherical-geometry beams configuration near the target chamber. The beams are imported into the final optical assemblies with special angles. In this paper, the transport beams arrangement design of SG-III facility is described. Firstly, the primary requirements of the transport beams arrangement in ICF target area system are given. Then the typical transport beam pathway from the MA output to the target chamber center is analyzed. The general layout, beams path length, and the parameters of transport mirrors are discussed for the transport beam arrangement.