Optimization Methodology of Polar Direct-Drive Illumination for the National Ignition Facility
Year: 2024
Type: article
Abstract: Improved laser illumination uniformity drives shocks and implosions to create more extreme high energy density environments. Predominantly, the geometry of experiments that can be performed is dictated by the layout of beams at laser facilities, limiting interfacility and multiscale investigations. This Letter presents the first automated, algorithmic approach for generating illumination configurations for high energy density experiments. The method is demonstrated in comparison to a polar direct-drive solid target experiment at the National Ignition Facility. The new illumination configuration is simulated to create greater than ×3 higher peak pressure and almost ×2 higher density by maintaining better shock uniformity. The optimization process is performed with reduced computational expense and isotropic plasma profiles while accounting for the impact of cross-beam energy transfer.
Source: Physical Review Letters
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: U.S. Department of Energy, University of Rochester, EUROfusion, Royal Society, European Commission, Centre National de la Recherche Scientifique, Université de Bordeaux, Grand Équipement National De Calcul Intensif, National Nuclear Security Administration, Euratom Research and Training Programme
Awards: UNIVERSITY OF ROCHESTER
''NATIONAL INERTIAL CONFINEMENT FUSION PROGRAM''
*NEW AWARD, Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium, G2293481551, G2842968662, G3562821882, G5172252545, G5211475403, G5484809798, G55965810, G7838780494, G8614582586
OpenAlex ID: W4403683623