Explanipedia

A multi-Physics Experiment for Low-Yield Nuclear Explosion Monitoring Open

Stephen C. Myers, George C. Abbott, T. Alexander, E T Alger, A. Pazos Álvarez , et al. · 2024

A series of multi-physics experiments, referred to as Physics Experiment 1 (PE1) is underway at the United States’ Nevada National Security Site (NNSS). The PE1 series includes detonations of three underground chemical explosions in P-tunn…

Complex Loading of CeO2 Powder Open

Travis Voorhees, M. S. Freeman, David Fredenburg, C. L. Rousculp, J. R. Griego , et al. · 2024

PHELIX for flux compression studies Open

P.J. Turchi, C. L. Rousculp, R.E. Reinovsky, W.A. Reass, J. R. Griego , et al. · 2024

PHELIX (Precision High Energy-density Liner Implosion eXperiment) is a concept for studying electromagnetic implosions using proton radiography. This approach requires a portable pulsed power and liner implosion apparatus that can be opera…

Renewed experimentation with ranchero flux compression generators Open

J.H. Goforth, Dennis Herrera, David Torres Torres, Ross K Meyer, W.L. Atchison , et al. · 2024

Tera-pascal shock physics experiment using pulsed power driver Open

C. L. Rousculp, Jeffery H Peterson, D. B. Holtkamp, David Oro, J. R. Griego , et al. · 2024

ALT-3 (Advanced Liner Technology) is a collaborative experiment between VNIIEF and LANL that aims to conduct high velocity material experiments and measure shockvelocities at pressures near 1 TPa. The DEMG (Disk Explosive Magnetic Generato…

Achieving high pressure shock Hugoniot measurements in cylindrical geometry using a high-explosive pulsed power drive Open

Jeffrey H. Peterson, C. L. Rousculp, D. B. Holtkamp, David Oro, J. R. Griego , et al. · 2024

The PHELIX portable pulsed power machine: Hydrodynamics experiments and beyond Open

R.E. Reinovsky, C. L. Rousculp, P.J. Turchi, W.A. Reass, D. Oró , et al. · 2024

Liner/target/CMU cassette design and fabrication Open

J. R. Griego · 2024

As part of an ongoing collaboration in pulsed power technology and condensed matter shock physics with RFNCNNIIEF, the initial design for the target and central measuring unit (CMU) for a high-pressure, high-precision ({approx}1 %), Hugoni…

The quest for TPa Hugoniot data: using the DEMG in high velocity pulsed power experiments Open

Jeff H Peterson, C. L. Rousculp, D. B. Holtkamp, David Oro, J. R. Griego , et al. · 2024

ALT-3 is an experiment being designed in collaboration between Russian VNIIEF scientists and LANL that aims to conduct high velocity material experiments to measure shock velocities at pressures near 1 TPa. The DEMG (Disk Explosive Magneti…

Renewed experimentation with Ranchero flux compression genereators Open

J.H. Goforth, Dennis Herrera, Douglas Tasker, David Torres Torres, W.L. Atchison , et al. · 2024

In the late 1990s, Los Alamos pursued a coaxial flux compression generator (FCG) concept that was described in several publications under the name 'Ranchero.' These FCGs were designed to be cost effective high current generators, and a var…

Status of LDRD-DR 20070518 development of a magnetically driven target for thermo-nuclear burn studies (u) Open

R. G. Watt, W.L. Atchison, Stirling A. Colgate, J. Gofoeth, J. R. Griego , et al. · 2024

This project is developing a magnetically driven cylindrical confinement system for the creation of a small region of material existing under extreme conditions. Using a Ranchero High Explosive Pulsed Power generator (HEPP) with maximum cu…

(U) PRAD0697 & PRAD0698: Complex Loading of CeO₂ Powder Open

Travis Voorhees, David Fredenburg, C. L. Rousculp, M. S. Freeman, J. R. Griego , et al. · 2020

Cerium(IV) oxide (CeO₂) powder is shock compressed using the Precision High Energy-density Liner Implosion eXperiment (PHELIX) platform. Experimental results are compared against several modeling approaches. Compaction behavior is best cap…

Compaction model validation under non-planar shock wave loading conditions Open

Travis Voorhees, M. S. Freeman, C. L. Rousculp, David Fredenburg, T. C. Carney , et al. · 2020

Three continuum compaction models are calibrated to planar impact data for CeO2 powder and used to predict the shock compaction behavior of CeO2 powder under cylindrically converging shock wave loading. All experiments and computations are…

MHD Modeling of Shock Physics Experiments with the Phelix Portable High Magnetic Field Drive Open

C. L. Rousculp, M. S. Freeman, Travis Voorhees, David Fredenburg, J. R. Griego , et al. · 2019

The PHELIX portable pulsed power driver has recently completed a set of experiments examining the response of granular material to convergent shock loading. Here a nearly 4 MA peak current is delivered to a Z-pinch load with a quarter wave…

(U) Pre-shot Report: Complex Loading of CeO<sub>2</sub> Powder Open

Travis Voorhees, David Fredenburg, C. L. Rousculp, J. R. Griego, David Oro · 2018

A cylindrically converging shock compaction experiment is designed utilizing the Precision High Energy-density Liner Implosion eXperiment (PHELIX) platform to dynamically load CeO₂ powder. Parametric analyses investigating the e…

The spikes from Richtmyer-Meshkov instabilities in pulsed power cylindrical experiments Open

M. S. Freeman, Chris Rousculp, David Oro, Seth Kreher, Baolian Cheng , et al. · 2018

The LANL PHELIX pulsed-power driven liner implosion apparatus is fielded to measure the growth of Richtmyer-Meshkov instabilities (RMIs) in a cylindrical geometry under the conditions of liquid (Cren-1), mixed-state (Cren-2), and solid (Cr…

Fielding the LANL Gas Cherenkov Detector (GCD-3) at the National Ignition Facility: The engineering challenges of designing, analyzing, fabricating, testing, and commissioning the next-generation GCD detector and WellDIM3.9m insertion manipulator for use at NIF Open

F. E. Lopez, H. W. Herrmann, R. J. Leeper, Steve Batha, J. A. Oertel , et al. · 2017

We report that fielding the LANL third-generation Gas Cherenkov Detector (GCD-3) at the National Ignition Facility (NIF) revealed an array of complex engineering challenges. Fielding the GCD-3 Detector in a 3.9 meter re-entrant Well on the…

PHELIX Crenulation 2 and 3 Flash Report Open

C. L. Rousculp, David Oro, J. R. Griego, Austin Patten, Levi P. Neukirch , et al. · 2017

This report documents the execution of the PHELIX driven Crenulation 2 and 3 at LANSCE proton radiography experiments in FY17 in support of the LANL Science Campaign-1 L2 Milestone (#5721). It should be noted that LANL Science Campaign 3 a…

Next generation gamma-ray Cherenkov detectors for the National Ignition Facility Open

H. W. Herrmann, Y. H. Kim, A. M. McEvoy, A. B. Zylstra, C. S. Young , et al. · 2016

The newest generation of Gas Cherenkov Detector (GCD-3) employed in Inertial Confinement Fusion experiments at the Omega Laser Facility has provided improved performance over previous generations. Comparison of reaction histories measured …

Design and fabrication of a window for the gas Cherenkov detector 3 Open

V. E. Fatherley, Derek Bingham, M. D. Cartelli, Richard DiDomizio, J. R. Griego , et al. · 2016

The gas Cherenkov detector 3 was designed at Los Alamos National Laboratory for use in inertial confinement fusion experiments at both the Omega Laser Facility and the National Ignition Facility. This instrument uses a low-Z gamma-to-elect…

Crenulation-1 Flash Report Open

C. L. Rousculp, David Oro, J. Bradley, J. R. Griego, M. S. Freeman , et al. · 2016

We briefly report on the first of PHELIX driven Crenulation experiments diagnosed with proton radiography. PHELIX is a 300 kJ capacitor bank located at the LANL LANSCE pRad facility. It is capable of delivering a 4 MA, 10 us current pulse …

Investigation of Surface Phenomena in Shocked Tin in Converging Geometry Open

C. L. Rousculp, David Oro, J. R. Griego, P.J. Turchi, R.E. Reinovsky , et al. · 2016

There is a great interest in RMI as source of ejecta from metal shells. Previous experiments have explored wavelength amplitude (kA) variation but they have a small range of drive pressures and are in planer geometry. Simulations, both MD …

Investigation of Surface Phenomena in Shocked Tin in Converging Geometry Open

C. L. Rousculp, David Oro, J. R. Griego, P.J. Turchi, R.E. Reinovsky , et al. · 2016

There is great interest in the behavior of the free surface of tin under shock loading. While it is known that meso-scale surface imperfections can seed the Richtmyer- Meshkov Instability (RMI) for a surface that is melted on release, much…

Cren(ulation)-1,2 Preshot Report Open

C. L. Rousculp, David Oro, J. R. Griego, J. Bradley, Brian Hollander , et al. · 2015

There is great interest in the behavior of the free surface of tin under shock loading. While it is known that meso-scale surface imperfections can seed the RichtmyerMeshkov Instability (RMI) for a surface that is melted on release, much l…

Investigation of Surface Phenomena in Shocked Tin in Converging Geometry Open

C. L. Rousculp, David Oro, L.G. Margolin, J. R. Griego, R.E. Reinovsky , et al. · 2015

adjacent to either vacuum or an inert receiver gas. Most of these previous driver/target configurations have been nominal planer geometry. With modern HE it has been straightforward to shock tin into melt on release. However it has been ch…

Damaged Surface Hydrodynamics (DSH) Flash Report Open

C. L. Rousculp, David Oro, C. L. Morris, A. Saunders, W.A. Reass , et al. · 2015

In an effort to understand the complex hydrodynamic flow present when a non-ideal (or damaged) surface between a dense, solid-state metal impinges on a light, gas in converging geometry, two DSH experiments have been conducted at the LANL …

Update on the MiniCLEAN Dark Matter Experiment | NIST Open

Kevin J. Coakley, K. Rielage, Michael Akashi-Ronquest, M. Bodmer, R.F. Bourque , et al. · 2015

Investigation of Surface Phenomena in Shocked Tin in Converging Geometry Open

C. L. Rousculp, David Oro, L.G. Margolin, J. R. Griego, R.E. Reinovsky , et al. · 2015

There is great interest in the behavior of the free surface of tin under shock loading. While it is known that meso-scale surface imperfections can seed the Richtmyer-Meshkov Instability (RMI) for a surface that is melted on release, much …

Update on the MiniCLEAN Dark Matter Experiment Open

K. Rielage, Michael Akashi-Ronquest, M. Bodmer, R.F. Bourque, B. Buck , et al. · 2015

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