Publications

Results 76–100 of 351

Search results

Jump to search filters

Progress in Implementing High-Energy Low-Mix Laser Preheat for MagLIF

Harvey-Thompson, Adam J.; Geissel, Matthias G.; Jennings, Christopher A.; Weis, Matthew R.; Ampleford, David A.; Bliss, David E.; Chandler, Gordon A.; Fein, Jeffrey R.; Galloway, B.R.; Glinsky, Michael E.; Gomez, Matthew R.; Hahn, K.D.; Hansen, Stephanie B.; Harding, Eric H.; Kimmel, Mark W.; Knapp, Patrick K.; Perea, L.; Peterson, Kara J.; Porter, John L.; Rambo, Patrick K.; Robertson, Grafton K.; Rochau, G.A.; Ruiz, Daniel E.; Schwarz, Jens S.; Shores, Jonathon S.; Sinars, Daniel S.; Slutz, Stephen A.; Smith, Ian C.; Speas, Christopher S.; Whittemore, K.; Woodbury, Daniel; Smith, G.E.

Abstract not provided.

More Details
TYPE Conference Poster YEAR 2019
OSTI

The Impact on Mix of Different Preheat Protocols

Harvey-Thompson, Adam J.; Geissel, Matthias G.; Jennings, Christopher A.; Weis, Matthew R.; Ampleford, David A.; Bliss, David E.; Chandler, Gordon A.; Fein, Jeffrey R.; Galloway, B.R.; Glinsky, Michael E.; Gomez, Matthew R.; Hahn, K.D.; Hansen, Stephanie B.; Harding, Eric H.; Kimmel, Mark W.; Knapp, Patrick K.; Perea, L.; Peterson, Kara J.; Porter, John L.; Rambo, Patrick K.; Robertson, Grafton K.; Rochau, G.A.; Ruiz, Daniel E.; Schwarz, Jens S.; Shores, Jonathon S.; Sinars, Daniel S.; Slutz, Stephen A.; Smith, Ian C.; Speas, Christopher S.; Whittemore, K.; Woodbury, Daniel; Smith, G.E.

Abstract not provided.

More Details
TYPE Conference Poster YEAR 2019
OSTI

Z Line-VISAR: A Spatially Resolved Load Current Diagnostic at the Z Pulsed Power Facility

Bliss, David E.; Myers, Clayton E.; Jones, Michael J.; Baker, J.L.; Austin, Kevin N.; Bettnecourt, R.; Bliss, E.; Celeste, J.; Celliers, P.M.; Clancy, T.; Cohen, S.; Crosley, M.; Datte, P.; Erskine, D.; Fratanduono, D.; Frieders, G.; Galbraith, J.; Hammer, J.; Hess, Mark H.; Jackson, J.; Jennings, Christopher A.; Johnson, Drew J.; Koen, D.; Lusk, J.; Martinez, A.; Massey, W.; Mccarville, T.; Mcdonald, R.; Mclean, H.; Raman, K.S.; Rodriguez, S.; Spencer, Decker C.; Springer, P.; De Dios, G.V.; Wong, J.

Abstract not provided.

More Details
TYPE Conference Poster YEAR 2019
OSTI

Stagnation performance scaling of Magnetized Liner Inertial Fusion

Gomez, Matthew R.; Yager-Elorriaga, David A.; Myers, Clayton E.; Slutz, Stephen A.; Weis, Matthew R.; Jennings, Christopher A.; Lamppa, Derek C.; Harvey-Thompson, Adam J.; Geissel, Matthias G.; Knapp, Patrick K.; Harding, Eric H.; Hansen, Stephanie B.; Mangan, Michael M.; Ruiz, Carlos L.; Chandler, Gordon A.; Webb, Timothy J.; Moore, Thomas M.; Laity, George R.; Ampleford, David A.; Peterson, Kyle J.; Rochau, G.A.; Sinars, Daniel S.

Abstract not provided.

More Details
TYPE Conference Poster YEAR 2019
OSTI

Implosion of auto-magnetizing helical liners on the Z facility

Physics of Plasmas

Shipley, Gabriel A.; Awe, Thomas J.; Hutsel, Brian T.; Greenly, John B.; Jennings, Christopher A.; Slutz, Stephen A.

In the first auto-magnetizing liner implosion experiments on the Z Facility, precompressed internal axial fields near 150 T were measured and 7.2-keV radiography indicated a high level of cylindrical uniformity of the imploding liner's inner surface. An auto-magnetizing (AutoMag) liner is made of discrete metallic helical conductors encapsulated in insulating material. Here, the liner generates internal axial magnetic field as a 1–2 MA, 100–200 ns current prepulse flows through the helical conductors. After the prepulse, the fast-rising main current pulse causes the insulating material between the metallic helices to break down ceasing axial field production. After breakdown, the helical liner, nonuniform in both density and electrical conductivity, implodes in 100 ns. In-flight radiography data demonstrate that while the inner wall maintains cylindrical uniformity, multiple new helically oriented structures are self-generated within the outer liner material layers during the implosion; this was not predicted by simulations. Furthermore, liner stagnation was delayed compared to simulation predictions. An analytical implosion model is compared with experimental data and preshot simulations to explore how changes in the premagnetization field strength and drive current affect the liner implosion trajectory. Both the measurement of >100 T internal axial field production and the demonstration of cylindrical uniformity of the imploding liner's inner wall are encouraging for promoting the use of AutoMag liners in future MagLIF experiments.

More Details
TYPE Journal Article YEAR 2019
DOIOSTI

Constraining preheat energy deposition in MagLIF experiments with multi-frame shadowgraphy

Physics of Plasmas

Harvey-Thompson, Adam J.; Geissel, Matthias G.; Jennings, Christopher A.; Weis, Matthew R.; Laros, James H.; Fein, Jeffrey R.; Ampleford, David A.; Chandler, Gordon A.; Glinsky, Michael E.; Hahn, K.D.; Hansen, Stephanie B.; Harding, Eric H.; Knapp, Patrick K.; Paguio, R.R.; Perea, L.; Peterson, Kyle J.; Porter, John L.; Rambo, Patrick K.; Robertson, Grafton K.; Rochau, G.A.; Schwarz, Jens S.; Shores, Jonathon S.; Sinars, Daniel S.; Slutz, Stephen A.; Smith, Gary L.; Smith, Ian C.; Speas, Christopher S.; Whittemore, K.; Woodbury, D.

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.

More Details
TYPE Journal Article YEAR 2019
DOIOSTIScopus

Stagnation Performance Scaling of Magnetized Liner Inertial Fusion

Gomez, Matthew R.; Yager-Elorriaga, David A.; Myers, Clayton E.; Slutz, Stephen A.; Weis, Matthew R.; Jennings, Christopher A.; Lamppa, Derek C.; Harvey-Thompson, Adam J.; Geissel, Matthias G.; Knapp, Patrick K.; Harding, Eric H.; Hansen, Stephanie B.; Mangan, Michael M.; Ruiz, Carlos L.; Chandler, Gordon A.; Hahn, Kelly D.; Webb, Timothy J.; Moore, Thomas M.; Laity, George R.; Ampleford, David A.; Peterson, Kyle J.; Rochau, G.A.; Sinars, Daniel S.

Abstract not provided.

More Details
TYPE Conference Poster YEAR 2019
OSTI

MagLIF laser preheat update

Harvey-Thompson, Adam J.; Geissel, Matthias G.; Weis, Matthew R.; Jennings, Christopher A.; Glinsky, Michael E.; Peterson, Kyle J.; Awe, Thomas J.; Bliss, David E.; Gomez, Matthew R.; Harding, Eric H.; Hansen, Stephanie B.; Kimmel, Mark W.; Knapp, Patrick K.; Lewis, Sean M.; Schollmeier, Marius; Schwarz, Jens S.; Sefkow, Adam B.; Shores, Jonathon S.; Slutz, Stephen A.; Sinars, Daniel S.; Smith, Ian C.; Speas, Christopher S.; Wei, M.S.; Vesey, Roger A.; Porter, John L.

Abstract not provided.

More Details
TYPE Conference Poster YEAR 2019
OSTI

Designing And Testing New MagLIF Preheat Protocols

Harvey-Thompson, Adam J.; Geissel, Matthias G.; Weis, Matthew R.; Jennings, Christopher A.; Glinsky, Michael E.; Peterson, Kyle J.; Awe, Thomas J.; Bliss, David E.; Gomez, Matthew R.; Harding, Eric H.; Hansen, Stephanie B.; Kimmel, Mark W.; Knapp, Patrick K.; Lewis, Sean M.; Porter, John L.; Rambo, Patrick K.; Rochau, G.A.; Schollmeier, Marius; Schwarz, Jens S.; Shores, Jonathon S.; Slutz, Stephen A.; Sinars, Daniel S.; Smith, Ian C.; Speas, Christopher S.

Abstract not provided.

More Details
TYPE Conference Poster YEAR 2019
OSTI
Results 76–100 of 351
Results 76–100 of 351