Scaling of High Energy Density Physics experiments

Two laser facilities with a large difference in laser energy is a capability in the US that offers a unique opportunity to evaluate physics scaling in the HED regime. Based on observations, typical experiments do not scale from the Omega laser facility to the National Ignition Facility even though the targets only vary by a factor of 2-3x in size. While differences in the laser energy deposition do play a role, the variation in experimental parameters change significantly enough to modify the importance of various physics models in simulation codes. Understanding the differences and designing experiments across these scales provide a unique opportunity for model validation, as well as applying uncertainty quantification to evaluate confidence in models outside the domain where data exists. In this presentation, we will discuss challenges and opportunities for scaling from Omega to NIF and how this can be applied for both model validation and uncertainty quantification.