DOE OSTI · 3399518
Multi-Fidelity Bayesian Optimization with Gaussian Processes for Double Shell Inertial Confinement Fusion Target Design
Abstract
Reliable, secure access to energy is a major focus for national security efforts. One potential route to such energy is through fusion reactions in inertial confinement fusion (ICF) experiments. Such experiments are carried out at facilities such as the National Ignition Facility (NIF) in Livermore, California, where high powered lasers are used to compress a DT fuel-containing target to the necessary high temperature, high pressure conditions. These experiments are limited in number, which creates a heavy dependence on high fidelity predictive physics simulations and analysis performed “pre shot,” or before the experiment occurs. Many of these simulations in higher dimensions (2D and 3D) are computationally expensive, so finding optimal simulation-based designs presents its own challenges. In this work, we present our multi-fidelity Bayesian optimization with Gaussian processes (GPs) for ICF double shell targets, where a 1D surrogate model is used to help find a 2D surrogate model, enabling us to find optimal targets in the higher fidelity (2D), while saving computational cost.
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Vazirani, Nomita Nirmal [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000302079704), Sacks, Ryan Foster [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000199711846), Haines, Brian Michael [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000238897074), Stark, David James [College of William and Mary, Williamsburg, VA (United States)] (ORCID:0000000203642733), Bradley, Paul Andrew [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000162296677), Loomis, Eric Nicholas [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000320951383), Merritt, Elizabeth Catherine [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000290260070), Robey III, Harry F. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000151698283). 2026-05-15. Multi-Fidelity Bayesian Optimization with Gaussian Processes for Double Shell Inertial Confinement Fusion Target Design. https://doi.org/10.1080/26941899.2026.2672238
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