The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform
Adam B Sefkow - One of the best experts on this subject based on the ideXlab platform.
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Laser-driven magnetized liner Inertial Fusion on OMEGA
Physics of Plasmas, 2017Co-Authors: D. H. Barnak, E. M. Campbell, J. R. Davies, Riccardo Betti, M. J. Bonino, V. Yu. Glebov, D. R. Harding, J. P. Knauer, S. P. Regan, Adam B SefkowAbstract:Magneto-Inertial Fusion (MIF) combines the compression of Fusion fuel, a hallmark of Inertial confinement Fusion (ICF), with strongly magnetized plasmas that suppress electron heat losses, a hallmark of magnetic Fusion. It can reduce the traditional velocity, pressure, and convergence ratio requirements of ICF. The magnetized liner Inertial Fusion (MagLIF) concept being studied at the Z Pulsed-Power Facility is a key target concept in the U.S. ICF Program. Laser-driven MagLIF is being developed on OMEGA to test the scaling of MagLIF over a range of absorbed energy of the order of 1 kJ on OMEGA to 500 kJ on Z. It is also valuable as a platform for studying the key physics of MIF. An energy-scaled point design has been developed for OMEGA that is roughly 10 × smaller in linear dimensions than Z MagLIF targets. A 0.6-mm-outer-diameter plastic cylinder filled with 2.4 mg/cm3 of D2 is placed in a ∼10-T axial magnetic field, generated by a Magneto-Inertial Fusion electrical discharge system, the cylinder is com...
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Laser-driven magnetized liner Inertial Fusion
Physics of Plasmas, 2017Co-Authors: J. R. Davies, E. M. Campbell, Daniel Sinars, D. H. Barnak, Riccardo Betti, Adam B Sefkow, Po-yu Chang, Kyle J. Peterson, M. R. WeisAbstract:A laser-driven, magnetized liner Inertial Fusion (MagLIF) experiment is designed for the OMEGA Laser System by scaling down the Z point design to provide the first experimental data on MagLIF scaling. OMEGA delivers roughly 1000× less energy than Z, so target linear dimensions are reduced by factors of ∼10. Magneto-Inertial Fusion electrical discharge system could provide an axial magnetic field of 10 T. Two-dimensional hydrocode modeling indicates that a single OMEGA beam can preheat the fuel to a mean temperature of ∼200 eV, limited by mix caused by heat flow into the wall. One-dimensional magnetohydrodynamic (MHD) modeling is used to determine the pulse duration and fuel density that optimize neutron yield at a fuel convergence ratio of roughly 25 or less, matching the Z point design, for a range of shell thicknesses. A relatively thinner shell, giving a higher implosion velocity, is required to give adequate fuel heating on OMEGA compared to Z because of the increase in thermal losses in smaller targe...
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The Role of Magnetized Liner Inertial Fusion as a Pathway to Fusion Energy
Journal of Fusion Energy, 2015Co-Authors: Daniel Sinars, Kyle J. Peterson, Edward Campbell, M. E. Cuneo, Christopher A. Jennings, Adam B SefkowAbstract:We discuss the possible impacts of a new magnetized liner Inertial Fusion concept on magneto-Inertial Fusion approaches to Fusion energy. Experiments in the last 1.5 years have already shown direct evidence of magnetic flux compression, a highly magnetized fusing fuel, significant compressional heating, a compressed cylindrical fusing plasma, and significant Fusion yield. While these exciting results demonstrate several key principles behind magneto-Inertial Fusion, more work in the coming years will be needed to demonstrate that such targets can scale to ignition and high yield. We argue that justifying significant investment in pulsed Inertial Fusion energy beyond target development should require well-understood, significant Fusion yields to be demonstrated in single-shot experiments. We also caution that even once target ideas and Fusion power plants have been demonstrated, historical trends suggest it would still be decades before Fusion could materially impact worldwide energy production.
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design of magnetized liner Inertial Fusion experiments using the z facilitya
Physics of Plasmas, 2014Co-Authors: Adam B Sefkow, Kyle J. Peterson, S A Slutz, J M Koning, M M Marinak, D B Sinars, R A VeseyAbstract:The magnetized liner Inertial Fusion concept has been presented as a path toward obtaining substantial thermonuclear Fusion yields using the Z accelerator [S. A. Slutz et al., Phys. Plasmas 17, 056303 (2010)]. We present the first integrated magnetohydrodynamic simulations of the Inertial Fusion targets, which self-consistently include laser preheating of the fuel, the presence of electrodes, and end loss effects. These numerical simulations provided the design for the first thermonuclear Fusion neutron-producing experiments on Z using capabilities that presently exist: peak currents of Imax = 18–20 MA, pre-seeded axial magnetic fields of Bz0=10 T, laser preheat energies of about Elas = 2 kJ delivered in 2 ns, DD fuel, and an aspect ratio 6 solid Be liner imploded to 70 km/s. Specific design details and observables for both near-term and future experiments are discussed, including sensitivity to laser timing and absorbed preheat energy. The initial experiments measured stagnation radii rstag<75 μm, temper...
M. R. Weis - One of the best experts on this subject based on the ideXlab platform.
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Origins and effects of mix on magnetized liner Inertial Fusion target performance
Physics of Plasmas, 2019Co-Authors: Patrick Knapp, M. R. Weis, Christopher A. Jennings, M.r. Gomez, Eric Harding, Stephanie B. Hansen, S A Slutz, Michael E. Glinsky, Kelly Hahn, M. EvansAbstract:In magneto-Inertial-Fusion experiments, energy losses such as a radiation need to be well controlled in order to maximize the compressional work done on the fuel and achieve thermonuclear conditions. One possible cause for high radiation losses is high-Z material mixing from the target components into the fuel. In this work, we analyze the effects of mix on target performance in Magnetized Liner Inertial Fusion (MagLIF) experiments at Sandia National Laboratories. Our results show that mix is likely produced from a variety of sources, approximately half of which originates during the laser heating phase and the remainder near stagnation, likely from the liner deceleration. By changing the “cushion” component of MagLIF targets from Al to Be, we achieved a 10× increase in neutron yield, a 60% increase in ion temperature, and an ∼50% increase in fuel energy at stagnation.
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Laser-driven magnetized liner Inertial Fusion
Physics of Plasmas, 2017Co-Authors: J. R. Davies, E. M. Campbell, Daniel Sinars, D. H. Barnak, Riccardo Betti, Adam B Sefkow, Po-yu Chang, Kyle J. Peterson, M. R. WeisAbstract:A laser-driven, magnetized liner Inertial Fusion (MagLIF) experiment is designed for the OMEGA Laser System by scaling down the Z point design to provide the first experimental data on MagLIF scaling. OMEGA delivers roughly 1000× less energy than Z, so target linear dimensions are reduced by factors of ∼10. Magneto-Inertial Fusion electrical discharge system could provide an axial magnetic field of 10 T. Two-dimensional hydrocode modeling indicates that a single OMEGA beam can preheat the fuel to a mean temperature of ∼200 eV, limited by mix caused by heat flow into the wall. One-dimensional magnetohydrodynamic (MHD) modeling is used to determine the pulse duration and fuel density that optimize neutron yield at a fuel convergence ratio of roughly 25 or less, matching the Z point design, for a range of shell thicknesses. A relatively thinner shell, giving a higher implosion velocity, is required to give adequate fuel heating on OMEGA compared to Z because of the increase in thermal losses in smaller targe...
Kyle J. Peterson - One of the best experts on this subject based on the ideXlab platform.
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Laser-driven magnetized liner Inertial Fusion
Physics of Plasmas, 2017Co-Authors: J. R. Davies, E. M. Campbell, Daniel Sinars, D. H. Barnak, Riccardo Betti, Adam B Sefkow, Po-yu Chang, Kyle J. Peterson, M. R. WeisAbstract:A laser-driven, magnetized liner Inertial Fusion (MagLIF) experiment is designed for the OMEGA Laser System by scaling down the Z point design to provide the first experimental data on MagLIF scaling. OMEGA delivers roughly 1000× less energy than Z, so target linear dimensions are reduced by factors of ∼10. Magneto-Inertial Fusion electrical discharge system could provide an axial magnetic field of 10 T. Two-dimensional hydrocode modeling indicates that a single OMEGA beam can preheat the fuel to a mean temperature of ∼200 eV, limited by mix caused by heat flow into the wall. One-dimensional magnetohydrodynamic (MHD) modeling is used to determine the pulse duration and fuel density that optimize neutron yield at a fuel convergence ratio of roughly 25 or less, matching the Z point design, for a range of shell thicknesses. A relatively thinner shell, giving a higher implosion velocity, is required to give adequate fuel heating on OMEGA compared to Z because of the increase in thermal losses in smaller targe...
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Increasing Load Current in Magnetized Liner Inertial Fusion Experiments
2017 IEEE International Conference on Plasma Science (ICOPS), 2017Co-Authors: M.r. Gomez, Kyle J. Peterson, M. E. Cuneo, Christopher A. Jennings, B. T. Hutsel, Matthew Martin, M. H. Hess, George Laity, Derek C. Lamppa, G. A. RochauAbstract:Magnetized Liner Inertial Fusion is a magneto-Inertial Fusion concept in which a metal cylindrical shell containing deuterium gas is axially magnetized, the fuel is heated with a laser, and the metal cylinder is imploded by the current of the Z Machine. In previous experiments, the axial magnetic field was 9-10 T, the laser energy absorbed in the fuel was less than 1 kJ, and the peak current flowing through the target was about 17 MA. These experiments produced Fusion-relevant temperatures and densities at stagnation, up to 3e12 primary DD neutrons, and a magnetic field in the fuel sufficient to trap a sizable fraction of the Fusion-produced tritons.
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The Role of Magnetized Liner Inertial Fusion as a Pathway to Fusion Energy
Journal of Fusion Energy, 2015Co-Authors: Daniel Sinars, Kyle J. Peterson, Edward Campbell, M. E. Cuneo, Christopher A. Jennings, Adam B SefkowAbstract:We discuss the possible impacts of a new magnetized liner Inertial Fusion concept on magneto-Inertial Fusion approaches to Fusion energy. Experiments in the last 1.5 years have already shown direct evidence of magnetic flux compression, a highly magnetized fusing fuel, significant compressional heating, a compressed cylindrical fusing plasma, and significant Fusion yield. While these exciting results demonstrate several key principles behind magneto-Inertial Fusion, more work in the coming years will be needed to demonstrate that such targets can scale to ignition and high yield. We argue that justifying significant investment in pulsed Inertial Fusion energy beyond target development should require well-understood, significant Fusion yields to be demonstrated in single-shot experiments. We also caution that even once target ideas and Fusion power plants have been demonstrated, historical trends suggest it would still be decades before Fusion could materially impact worldwide energy production.
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design of magnetized liner Inertial Fusion experiments using the z facilitya
Physics of Plasmas, 2014Co-Authors: Adam B Sefkow, Kyle J. Peterson, S A Slutz, J M Koning, M M Marinak, D B Sinars, R A VeseyAbstract:The magnetized liner Inertial Fusion concept has been presented as a path toward obtaining substantial thermonuclear Fusion yields using the Z accelerator [S. A. Slutz et al., Phys. Plasmas 17, 056303 (2010)]. We present the first integrated magnetohydrodynamic simulations of the Inertial Fusion targets, which self-consistently include laser preheating of the fuel, the presence of electrodes, and end loss effects. These numerical simulations provided the design for the first thermonuclear Fusion neutron-producing experiments on Z using capabilities that presently exist: peak currents of Imax = 18–20 MA, pre-seeded axial magnetic fields of Bz0=10 T, laser preheat energies of about Elas = 2 kJ delivered in 2 ns, DD fuel, and an aspect ratio 6 solid Be liner imploded to 70 km/s. Specific design details and observables for both near-term and future experiments are discussed, including sensitivity to laser timing and absorbed preheat energy. The initial experiments measured stagnation radii rstag<75 μm, temper...
J. R. Davies - One of the best experts on this subject based on the ideXlab platform.
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Laser-driven magnetized liner Inertial Fusion on OMEGA
Physics of Plasmas, 2017Co-Authors: D. H. Barnak, E. M. Campbell, J. R. Davies, Riccardo Betti, M. J. Bonino, V. Yu. Glebov, D. R. Harding, J. P. Knauer, S. P. Regan, Adam B SefkowAbstract:Magneto-Inertial Fusion (MIF) combines the compression of Fusion fuel, a hallmark of Inertial confinement Fusion (ICF), with strongly magnetized plasmas that suppress electron heat losses, a hallmark of magnetic Fusion. It can reduce the traditional velocity, pressure, and convergence ratio requirements of ICF. The magnetized liner Inertial Fusion (MagLIF) concept being studied at the Z Pulsed-Power Facility is a key target concept in the U.S. ICF Program. Laser-driven MagLIF is being developed on OMEGA to test the scaling of MagLIF over a range of absorbed energy of the order of 1 kJ on OMEGA to 500 kJ on Z. It is also valuable as a platform for studying the key physics of MIF. An energy-scaled point design has been developed for OMEGA that is roughly 10 × smaller in linear dimensions than Z MagLIF targets. A 0.6-mm-outer-diameter plastic cylinder filled with 2.4 mg/cm3 of D2 is placed in a ∼10-T axial magnetic field, generated by a Magneto-Inertial Fusion electrical discharge system, the cylinder is com...
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Laser-driven magnetized liner Inertial Fusion
Physics of Plasmas, 2017Co-Authors: J. R. Davies, E. M. Campbell, Daniel Sinars, D. H. Barnak, Riccardo Betti, Adam B Sefkow, Po-yu Chang, Kyle J. Peterson, M. R. WeisAbstract:A laser-driven, magnetized liner Inertial Fusion (MagLIF) experiment is designed for the OMEGA Laser System by scaling down the Z point design to provide the first experimental data on MagLIF scaling. OMEGA delivers roughly 1000× less energy than Z, so target linear dimensions are reduced by factors of ∼10. Magneto-Inertial Fusion electrical discharge system could provide an axial magnetic field of 10 T. Two-dimensional hydrocode modeling indicates that a single OMEGA beam can preheat the fuel to a mean temperature of ∼200 eV, limited by mix caused by heat flow into the wall. One-dimensional magnetohydrodynamic (MHD) modeling is used to determine the pulse duration and fuel density that optimize neutron yield at a fuel convergence ratio of roughly 25 or less, matching the Z point design, for a range of shell thicknesses. A relatively thinner shell, giving a higher implosion velocity, is required to give adequate fuel heating on OMEGA compared to Z because of the increase in thermal losses in smaller targe...
D. H. Barnak - One of the best experts on this subject based on the ideXlab platform.
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Laser-driven magnetized liner Inertial Fusion on OMEGA
Physics of Plasmas, 2017Co-Authors: D. H. Barnak, E. M. Campbell, J. R. Davies, Riccardo Betti, M. J. Bonino, V. Yu. Glebov, D. R. Harding, J. P. Knauer, S. P. Regan, Adam B SefkowAbstract:Magneto-Inertial Fusion (MIF) combines the compression of Fusion fuel, a hallmark of Inertial confinement Fusion (ICF), with strongly magnetized plasmas that suppress electron heat losses, a hallmark of magnetic Fusion. It can reduce the traditional velocity, pressure, and convergence ratio requirements of ICF. The magnetized liner Inertial Fusion (MagLIF) concept being studied at the Z Pulsed-Power Facility is a key target concept in the U.S. ICF Program. Laser-driven MagLIF is being developed on OMEGA to test the scaling of MagLIF over a range of absorbed energy of the order of 1 kJ on OMEGA to 500 kJ on Z. It is also valuable as a platform for studying the key physics of MIF. An energy-scaled point design has been developed for OMEGA that is roughly 10 × smaller in linear dimensions than Z MagLIF targets. A 0.6-mm-outer-diameter plastic cylinder filled with 2.4 mg/cm3 of D2 is placed in a ∼10-T axial magnetic field, generated by a Magneto-Inertial Fusion electrical discharge system, the cylinder is com...
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Laser-driven magnetized liner Inertial Fusion
Physics of Plasmas, 2017Co-Authors: J. R. Davies, E. M. Campbell, Daniel Sinars, D. H. Barnak, Riccardo Betti, Adam B Sefkow, Po-yu Chang, Kyle J. Peterson, M. R. WeisAbstract:A laser-driven, magnetized liner Inertial Fusion (MagLIF) experiment is designed for the OMEGA Laser System by scaling down the Z point design to provide the first experimental data on MagLIF scaling. OMEGA delivers roughly 1000× less energy than Z, so target linear dimensions are reduced by factors of ∼10. Magneto-Inertial Fusion electrical discharge system could provide an axial magnetic field of 10 T. Two-dimensional hydrocode modeling indicates that a single OMEGA beam can preheat the fuel to a mean temperature of ∼200 eV, limited by mix caused by heat flow into the wall. One-dimensional magnetohydrodynamic (MHD) modeling is used to determine the pulse duration and fuel density that optimize neutron yield at a fuel convergence ratio of roughly 25 or less, matching the Z point design, for a range of shell thicknesses. A relatively thinner shell, giving a higher implosion velocity, is required to give adequate fuel heating on OMEGA compared to Z because of the increase in thermal losses in smaller targe...