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Pulsed-power driven inertial confinement fusion development at Sandia National Laboratories

Proposed for publication in 5th Special Issue of the IEEE Transactions on Plasma Science Z-Pinch Plasmas.

Cuneo, M.E.; Mazarakis, Michael G.; Lamppa, Derek C.; Kaye, Ronald J.; Nakhleh, Charles N.; Bailey, James E.; Hansen, Stephanie B.; McBride, Ryan D.; Herrmann, Mark H.; Lopez, A.; Peterson, Kyle J.; Ampleford, David A.; Jones, Michael J.; Savage, Mark E.; Jennings, Christopher A.; Martin, Matthew; Slutz, Stephen A.; Lemke, Raymond W.; Christenson, Peggy J.; Sweeney, Mary A.; Jones, Brent M.; Yu, Edmund Y.; McPherson, Leroy A.; Harding, Eric H.; Knapp, Patrick K.; Gomez, Matthew R.; Awe, Thomas J.; Stygar, William A.; Leeper, Ramon J.; Ruiz, Carlos L.; Chandler, Gordon A.; Mckenney, John M.; Owen, Albert C.; McKee, George R.; Matzen, M.K.; Leifeste, Gordon T.; Atherton, B.W.; Vesey, Roger A.; Smith, Ian C.; Geissel, Matthias G.; Rambo, Patrick K.; Sinars, Daniel S.; Sefkow, Adam B.; Rovang, Dean C.; Rochau, G.A.

Abstract not provided.

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TYPE Journal Article YEAR 2012
OSTIDOI

Z-Backlighter facility upgrades: A path to short/long pulse, multi-frame, multi-color x-ray backlighting at the Z-Accelerator

Proceedings of SPIE - The International Society for Optical Engineering

Schwarz, Jens S.; Rambo, Patrick K.; Geissel, Matthias G.; Kimmel, Mark W.; Schollmeier, Marius; Smith, Ian C.; Bellum, John; Kletecka, Damon; Sefkow, Adam; Smith, Douglas; Athertona, Briggs

We discuss upgrades and development currently underway at the Z-Backlighter facility. Among them are a new optical parametric chirped pulse amplifier (OPCPA) front end, 94 cm × 42 cm multi layer dielectric (MLD) gratings, dichroic laser beam transport studies, 25 keV x-ray source development, and a major target area expansion. These upgrades will pave the way for short/long pulse, multi-frame, multi-color x-ray backlighting at the Z-Accelerator. © 2011 SPIE.

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TYPE Conference YEAR 2011
ScopusOSTI

Above-60-MeV proton acceleration with a 150 TW laser system

Schollmeier, Marius; Geissel, Matthias G.; Sefkow, Adam B.; Rambo, Patrick K.; Schwarz, Jens S.; Atherton, B.W.

Laser-accelerated proton beams can be used in a variety of applications, e.g. ultrafast radiography of dense objects or strong electromagnetic fields. Therefore high energies of tens of MeV are required. We report on proton-acceleration experiments with a 150 TW laser system using mm-sized thin foils and mass-reduced targets of various thicknesses. Thin- foil targets yielded maximum energies of 50 MeV. A further reduction of the target dimensions from mm-size to 250 x 250 x 25 microns increased the maximum proton energy to >65 MeV, which is comparable to proton energies measured only at higher-energy, Petawatt-class laser systems. The dependence of the maximum energy on target dimensions was investigated, and differences between mm-sized thin foils and mass-reduced targets will be reported.

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TYPE Conference YEAR 2010
OSTI

Ultrafast 25 keV backlighting for experiments on Z

Geissel, Matthias G.; Schollmeier, Marius; Kimmel, Mark W.; Pitts, Todd A.; Rambo, Patrick K.; Schwarz, Jens S.; Sefkow, Adam B.; Atherton, B.W.

To extend the backlighting capabilities for Sandia's Z-Accelerator, Z-Petawatt, a laser which can provide laser pulses of 500 fs length and up to 120 J (100TW target area) or up to 450 J (Z / Petawatt target area) has been built over the last years. The main mission of this facility focuses on the generation of high energy X-rays, such as tin Ka at 25 keV in ultra-short bursts. Achieving 25 keV radiographs with decent resolution and contrast required addressing multiple problems such as blocking of hot electrons, minimization of the source, development of suitable filters, and optimization of laser intensity. Due to the violent environment inside of Z, an additional very challenging task is finding massive debris and radiation protection measures without losing the functionality of the backlighting system. We will present the first experiments on 25 keV backlighting including an analysis of image quality and X-ray efficiency.

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TYPE Conference YEAR 2010
OSTI

Ultrafast 25 keV backlighting for experiments on Z

Geissel, Matthias G.; Atherton, B.W.; Pitts, Todd A.; Schollmeier, Marius; Headley, Daniel I.; Kimmel, Mark W.; Rambo, Patrick K.; Robertson, Grafton K.; Sefkow, Adam B.; Schwarz, Jens S.; Speas, Christopher S.

To extend the backlighting capabilities for Sandia's Z-Accelerator, Z-Petawatt, a laser which can provide laser pulses of 500 fs length and up to 120 J (100TW target area) or up to 450 J (Z/Petawatt target area) has been built over the last years. The main mission of this facility focuses on the generation of high energy X-rays, such as tin K{alpha} at 25 keV in ultra-short bursts. Achieving 25 keV radiographs with decent resolution and contrast required addressing multiple problems such as blocking of hot electrons, minimization of the source, development of suitable filters, and optimization of laser intensity. Due to the violent environment inside of Z, an additional very challenging task is finding massive debris and radiation protection measures without losing the functionality of the backlighting system. We will present the first experiments on 25 keV backlighting including an analysis of image quality and X-ray efficiency.

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TYPE Conference YEAR 2010
OSTI

Proton acceleration experiments with Z-Petawatt

Schollmeier, Marius; Geissel, Matthias G.; Sefkow, Adam B.; Kimmel, Mark W.; Rambo, Patrick K.; Schwarz, Jens S.; Atherton, B.W.

The outline of this presentation: (1) Proton acceleration with high-power lasers - Target Normal Sheath Acceleration concept; (2) Proton acceleration with mass-reduced targets - Breaking the 60 MeV threshold; (3) Proton beam divergence control - Novel focusing target geometry; and (4) New experimental capability development - Proton radiography on Z.

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TYPE Conference YEAR 2010
OSTI
Results 151–175 of 212
Results 151–175 of 212