Hohlraum Symmetry Experiments with Multiple Beam Cones on the Omega Laser Facility

Symmetry experiments have been performed on the Omega laser facility using cylindrical hohlraum targets with as many as 40 beams arranged into multiple beam cones. These experiments constitute a first step in the development of ``beam phasing'' in which beams are arranged into multiple beam cones, forming multiple rings of beam spots on the inner surface of a cylindrical hohlraum, and demonstrate the ability to model hohlraums incorporating multiple beam cones and to tune the time-integrated capsule flux asymmetry by adjustment of the beam pointing.