Fusion Gain and Triple Product for the Sheared-Flow-Stabilized
            <i>Z</i>
            Pinch

Shumlak, U.; Meier, E. T.; Levitt, B.

doi:10.1080/15361055.2023.2198049

Cited by 5 publications

(3 citation statements)

References 63 publications

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“…The plasma load is calculated as a voltage drop measured along the insulator of the device between the cathode (inner electrode) and anode (outer electrode). The gap voltage is measured upstream of the insulator ahead of a 70 nH region of inductance (see figure 1 in [19] reproduced from figure 3 in [1]), so to compare with experiment, it is calculated as…”

Section: Problem Setupmentioning

confidence: 99%

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Whole device modeling of the fuze sheared-flow-stabilized Z pinch

Datta,

Meier,

Shumlak

2024

Nucl. Fusion

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The FuZE sheared-flow-stabilized Z pinch at Zap Energy is simulated using whole-device modeling employing an axisymmetric resistive magnetohydrodynamic formulation implemented within the discontinuous Galerkin WARPXM framework. Simulations show formation of Z pinches with densities of approximately 10\textsuperscript{22} m\textsuperscript{-3} and total DD fusion neutron rate of 10\textsuperscript{7} per $\mu$s for approximately 2 $\mu$s. Simulation-derived synthetic diagnostics show peak currents and voltages within 10\% and total yield within approximately 30\% of experiment for similar plasma mass. The simulations provide insight into the plasma dynamics in the experiment and enable a predictive capability for exploring design changes on devices built at Zap Energy.

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Section: Problem Setupmentioning

confidence: 99%

“…The plasma affects the time-varying circuit current by acting as a load given by the voltage drop in equation (19) in the RLC circuit. Simultaneously, this circuit current acts as a boundary condition on the plasma, which when converted to the azimuthal magnetic field using Ampere's law at the insulator boundary at…”

Section: Problem Setupmentioning

confidence: 99%

Whole device modeling of the fuze sheared-flow-stabilized Z pinch

Datta,

Meier,

Shumlak

2024

Nucl. Fusion

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“…In the existing technological concepts, the fusion reaction occurs in plasma at a very high temperature (10 8 • C), which is needed to overcome the repulsive forces between the nuclei [3,4]. Impurities (atoms of different natures) in the plasma impede the process, thus, the reaction should take place in a vacuum vessel, which is an essential component in the fusion power plant [5][6][7]. Plasma-facing components (PFCs) suffer from helium bombardment and highly energetic neutrons, which can result in the following.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Crystal Orientation and Thermal State of a Pure Cu on the Formation of Helium Blisters

Shtuckmeyster,

Maman,

Vaknin

et al. 2024

Metals

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The factors that influence the formation of helium blisters in copper were studied, including crystallographic grain orientation and thermomechanical conditions. Helium implantation experiments were conducted at 40 KeV with a dose of 5 × 1017 ions/cm2, and the samples were then subjected to post-implantation heat treatments at 450 °C for different holding times. A scanning electron microscope (SEM) equipped with an electron backscatter diffraction (EBSD) detector was used to analyze the samples, revealing that the degree of blistering erosion and its evolution with time varied with the crystallographic plane of the free surface in different ways in annealed and cold rolled copper. Out of the investigated states, rolled copper with a (111) free surface had superior helium blistering durability. This is explained by the consideration of the multivariable situation, including the role of dislocations and vacancies. For future plasma-facing component (PFC) candidate material, similar research should be conducted in order to find the optimal combination of material properties for helium blistering durability. In the case of Cu selection as a PFC, the two practical approaches to obtain the preferred (111) orientation are cold rolling and thin layer technologies.

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The Zap Energy approach to commercial fusion

Levitt,

Meier,

Umstattd

et al. 2023

Physics of Plasmas

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Zap Energy is a private fusion energy company developing the sheared-flow-stabilized (SFS) Z-pinch concept for commercial energy production. Spun out from the University of Washington, these experimental and computational efforts have resulted in devices with quasi-steady DD fusion yields above 109 per pulse. These devices support scaling toward energy breakeven on existing devices as well as beyond to commercially relevant engineering fusion gains. This article discusses the strategy behind Zap's development path, which is derived directly from the engineering and scientific elegance of the confinement method. Without need for external confinement or heating technologies, the SFS Z pinch relies on plasma self-organization. This compact magnetic confinement technology could, in turn, provide the basis for a cost-effective fusion power plant, vastly reduced in complexity from its competitors.

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Fusion Gain and Triple Product for the Sheared-Flow-Stabilized Z Pinch

Cited by 5 publications

References 63 publications

Whole device modeling of the fuze sheared-flow-stabilized Z pinch

Whole device modeling of the fuze sheared-flow-stabilized Z pinch

The Influence of Crystal Orientation and Thermal State of a Pure Cu on the Formation of Helium Blisters

The Zap Energy approach to commercial fusion

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