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The Rayleigh-Taylor (RT) instability affects a vast range of High EnergyDensity (HED) length scales, spanning from supernova explosions (10$^{13}$ m)to inertial confinement fusion (10$^{-6}$ m). In inertial confinement fusion,the RT instability is known to induce mixing or turbulent transition, which inturn cools the hot spot and hinders ignition. The fine-scale features of the RTinstability, which are difficult to image in HED physics, may help determine ifthe system is mixing or is transitioning to turbulence. Earlier diagnosticslacked the spatial and temporal resolution necessary to diagnose the dynamicsthat occur along the RT structure. A recently developed diagnostic, the CrystalBacklighter Imager (CBI), \cite{Hall:2019, DoZonePlate} can now produce anx-ray radiograph capable of resolving the fine-scale features expected in theseRT unstable systems. This paper describes an experimental design that adapts awell-characterized National Ignition Facility (NIF) platform to accommodate theCBI diagnostic. Simulations and synthetic radiographs highlight the resolutioncapabilities of the CBI in comparison to previous diagnostics. The improvedresolution of the system can provide new observations to study the RTinstability's involvement in mixing and the transition to turbulence in the HEDregime.

Design of a High-Resolution Rayleigh-Taylor Experiment with the Crystal Backlighter Imager on the National Ignition Facility