Model Based 3D Reconstruction of MagIF stagnation Conditions
Abstract not provided.
Publications
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Jump to search filtersInvestigating the energy balance in MagLIF preheat experiments
Abstract not provided.
Tomographic reconstruction of MagLIF emission volumes from orthogonal projections
Abstract not provided.
Developing a platform to enable parameter scaling studies in Magnetized Liner Inertial Fusion experiments
Abstract not provided.
Increased preheat energy to MagLIF targets with cryogenic cooling
Abstract not provided.
An overview of magneto-inertial fusion on the Z Machine at Sandia National Laboratories
Abstract not provided.
An overview of magneto-inertial fusion on the Z Machine at Sandia National Laboratories
Abstract not provided.
IMPROVED PERFORMANCE OF MAGNETIZED LINER INERTIAL FUSION EXPERIMENTS WITH HIGH-ENERGY LOW-MIX LASER PREHEAT CONFIGURATIONS
Abstract not provided.
Upgrading Wolter Imagers for X-Ray Diagnostics in the Z Pulsed-Power Facility at Sandia National Laboratories
Abstract not provided.
High-resolution imaging of warm x-ray sources with a Wolter optic on the Z Machine
Abstract not provided.
Narrowband Self-Emission X-ray Imaging of MagLIF Targets on Z
Abstract not provided.
Phase contrast imaging of irradiated foils through Talbot Lau X ray Deflectometry on OMEGA EP
Abstract not provided.
Sedov-Taylor-like blast waves as an in-situ measure of energy transport in laboratory experiments
Abstract not provided.
Performance Scaling in Magnetized Liner Inertial Fusion Experiments
Physical Review Letters
We present experimental results from the first systematic study of performance scaling with drive parameters for a magnetoinertial fusion concept. In magnetized liner inertial fusion experiments, the burn-averaged ion temperature doubles to 3.1 keV and the primary deuterium-deuterium neutron yield increases by more than an order of magnitude to 1.1×1013 (2 kJ deuterium-tritium equivalent) through a simultaneous increase in the applied magnetic field (from 10.4 to 15.9 T), laser preheat energy (from 0.46 to 1.2 kJ), and current coupling (from 16 to 20 MA). Individual parametric scans of the initial magnetic field and laser preheat energy show the expected trends, demonstrating the importance of magnetic insulation and the impact of the Nernst effect for this concept. A drive-current scan shows that present experiments operate close to the point where implosion stability is a limiting factor in performance, demonstrating the need to raise fuel pressure as drive current is increased. Simulations that capture these experimental trends indicate that another order of magnitude increase in yield on the Z facility is possible with additional increases of input parameters.
Update on MagLIF preheat experiments
Abstract not provided.
Implementation of a Talbot-Lau X-ray deflectometer diagnostic platform for the OMEGA EP laser
Review of Scientific Instruments
A Talbot-Lau X-ray Deflectometer (TXD) was implemented in the OMEGA EP laser facility to characterize the evolution of an irradiated foil ablation front by mapping electron densities >1022 cm-3 by means of Moiré deflectometry. The experiment used a short-pulse laser (30-100 J, 10 ps) and a foil copper target as an X-ray backlighter source. In the first experimental tests performed to benchmark the diagnostic platform, grating survival was demonstrated and X-ray backlighter laser parameters that deliver Moiré images were described. The necessary modifications to accurately probe the ablation front through TXD using the EP-TXD diagnostic platform are discussed.
High-resolution imaging of warm x-ray sources with a Wolter optic on the Z Machine
Abstract not provided.
Energy Coupling and LPI Dependencies in MagLIF Pre-Heat
Abstract not provided.
Signatures of preheat performance in Magnetized Liner Inertial Fusion experiments from time-resolved stimulated Raman and Brillouin backscatter spectra
Abstract not provided.
The Impact on Mix of Different Preheat Protocols
Abstract not provided.
Progress in Implementing High-Energy Low-Mix Laser Preheat for MagLIF
Abstract not provided.
Towards Learning MagLIF Performance from Stagnation Morphology
Abstract not provided.
Development of a Wolter Imager to diagnose warm x-ray sources on the Z Machine
Abstract not provided.
Experimental Aspects of MagLIF Pre-Heat Studies: The Pecos Target Area
Abstract not provided.
Constraining preheat energy deposition in MagLIF experiments with multi-frame shadowgraphy
Physics of Plasmas
A multi-frame shadowgraphy diagnostic has been developed and applied to laser preheat experiments relevant to the Magnetized Liner Inertial Fusion (MagLIF) concept. The diagnostic views the plasma created by laser preheat in MagLIF-relevant gas cells immediately after the laser deposits energy as well as the resulting blast wave evolution later in time. The expansion of the blast wave is modeled with 1D radiation-hydrodynamic simulations that relate the boundary of the blast wave at a given time to the energy deposited into the fuel. This technique is applied to four different preheat protocols that have been used in integrated MagLIF experiments to infer the amount of energy deposited by the laser into the fuel. The results of the integrated MagLIF experiments are compared with those of two-dimensional LASNEX simulations. The best performing shots returned neutron yields ∼40-55% of the simulated predictions for three different preheat protocols.
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