Validation of Z-pinch double-ended hohlraum energetics and capsule coupling models using Z data

Abstract
The pulsed-power driven double-ended vacuum hohlraum allows highly symmetric capsule implosions, aided by the separation of the capsule from the z-pinch and its associated instabilities, spatial variations, and non-thermal spectral components. Experiments on Sandia National Laboratories' Z facility in a single-sided power feed configuration have been limited thus far to capsule drive temperatures of 75 eV or less. Nonetheless, these experiments have validated the hohlraum energetics, hohlraum coupling, and capsule coupling properties of this configuration. Implosion capsules and symmetry diagnostic capsules have provided a wealth of capsule energetics data in the form of implosion trajectories for comparison to simulation. These measurements have been compared to detailed two-dimensional Lasnex hohlraum simulations, which model the hohlraum radiation transport including the effects of z-pinch source motion as well as hohlraum absorption/re-emission and wall plasma motion.