Journal ArticleDOI
Shock timing experiments on the National Ignition Facility: Initial results and comparison with simulation
Harry Robey,T. R. Boehly,Peter M. Celliers,Jon Eggert,Damien Hicks,Raymond F. Smith,R. Collins,Mark W. Bowers,K. G. Krauter,P. Datte,D. H. Munro,Jose Milovich,O. S. Jones,Pierre Michel,Cliff Thomas,R. E. Olson,S. M. Pollaine,Richard Town,S. W. Haan,Debra Callahan,David C. Clark,J. Edwards,John Kline,S. N. Dixit,Marilyn Schneider,E. L. Dewald,Klaus Widmann,J. D. Moody,Tilo Döppner,Harry B. Radousky,A Throop,Daniel H. Kalantar,P. DiNicola,A. Nikroo,Jeremy Kroll,A. V. Hamza,J. B. Horner,Suhas Bhandarkar,E. G. Dzenitis,E T Alger,E. M. Giraldez,Carlos E. Castro,K. A. Moreno,C. A. Haynam,K. N. LaFortune,C. C. Widmayer,M. J. Shaw,Kenneth S. Jancaitis,T. G. Parham,D. M. Holunga,C. F. Walters,B. Haid,Evan Mapoles,J. D. Sater,C. R. Gibson,T. N. Malsbury,James E. Fair,D. Trummer,K. R. Coffee,B. Burr,L. V. Berzins,C. Choate,S. J. Brereton,S. Azevedo,H. Chandrasekaran,David C. Eder,N. Masters,Aaron Fisher,P. A. Sterne,B. K. Young,Otto Landen,B. M. Van Wonterghem,B. J. MacGowan,J. Atherton,J. D. Lindl,D. D. Meyerhofer,Edward I. Moses +76 more
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Lindl et al. as mentioned in this paper measured the strength and relative timing of deuterium-tritium (DT) implosions on the National Ignition Facility (NIF) in a specially designed target platform known as the keyhole target.Abstract:
Capsule implosions on the National Ignition Facility (NIF) [Lindl et al., Phys. Plasmas 11, 339 (2004)] are underway with the goal of compressing deuterium-tritium (DT) fuel to a sufficiently high areal density (ρR) to sustain a self-propagating burn wave required for fusion power gain greater than unity. These implosions are driven with a carefully tailored sequence of four shock waves that must be timed to very high precision in order to keep the DT fuel on a low adiabat. Initial experiments to measure the strength and relative timing of these shocks have been conducted on NIF in a specially designed surrogate target platform known as the keyhole target. This target geometry and the associated diagnostics are described in detail. The initial data are presented and compared with numerical simulations. As the primary goal of these experiments is to assess and minimize the adiabat in related DT implosions, a methodology is described for quantifying the adiabat from the shock velocity measurements. Results are contrasted between early experiments that exhibited very poor shock timing and subsequent experiments where a modified target geometry demonstrated significant improvement.read more
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Journal ArticleDOI
Review of the National Ignition Campaign 2009-2012
TL;DR: The National Ignition Campaign (NIC) as mentioned in this paper was a multi-institution effort established under the National Nuclear Security Administration of DOE in 2005, prior to the completion of the NIF in 2009.
Journal ArticleDOI
Direct-drive inertial confinement fusion: A review
R. S. Craxton,Karen S. Anderson,T. R. Boehly,Valeri Goncharov,D. R. Harding,J. P. Knauer,R. L. McCrory,P. W. McKenty,D. D. Meyerhofer,J.F. Myatt,Andrew J. Schmitt,John D. Sethian,R. W. Short,S. Skupsky,W. Theobald,William L. Kruer,Kazuo Tanaka,Riccardo Betti,Tim Collins,J. A. Delettrez,Suxing Hu,J. A. Marozas,A. V. Maximov,D. T. Michel,P. B. Radha,Sean Regan,T. C. Sangster,W. Seka,A. A. Solodov,J. M. Soures,Christian Stoeckl,Jonathan D. Zuegel +31 more
TL;DR: The direct-drive, laser-based approach to inertial confinement fusion (ICF) is reviewed from its inception following the demonstration of the first laser to its implementation on the present generation of high-power lasers as mentioned in this paper.
Journal ArticleDOI
Three-dimensional simulations of low foot and high foot implosion experiments on the National Ignition Facility
Daniel S. Clark,C. R. Weber,Jose Milovich,Jay D. Salmonson,Andrea Kritcher,S. W. Haan,B. A. Hammel,D. E. Hinkel,Omar Hurricane,O. S. Jones,M. M. Marinak,P. K. Patel,Harry Robey,S. M. Sepke,M. J. Edwards +14 more
TL;DR: Moses et al. as discussed by the authors described the current state of progress of 3D capsule-only simulations of NIF implosions aimed at accurately describing the performance of specific NIF experiments, including the effects of hohlraum radiation asymmetries, capsule surface defects, the capsule support tent and fill tube.
Journal ArticleDOI
The high-foot implosion campaign on the National Ignition Facilitya)
Omar Hurricane,Debra Callahan,D. T. Casey,E. L. Dewald,T. R. Dittrich,Tilo Döppner,M. A. Barrios Garcia,Denise Hinkel,L. F. Berzak Hopkins,P. Kervin,John Kline,S. Le Pape,Tammy Ma,Andrew MacPhee,Jose Milovich,J. D. Moody,Arthur Pak,P. K. Patel,H.-S. Park,Bruce Remington,Harry Robey,Jay D. Salmonson,P. T. Springer,R. Tommasini,Laura Robin Benedetti,J. A. Caggiano,Peter M. Celliers,C. J. Cerjan,Rebecca Dylla-Spears,D. H. Edgell,Melissa Edwards,David N. Fittinghoff,Gary Grim,N. Guler,N. Izumi,J. A. Frenje,M. Gatu Johnson,S. W. Haan,Robert Hatarik,Hans W. Herrmann,S. Khan,J. P. Knauer,B. J. Kozioziemski,A. L. Kritcher,George A. Kyrala,Steve MacLaren,Frank E. Merrill,Pierre Michel,J. E. Ralph,James Ross,J. R. Rygg,Marilyn Schneider,Brian Spears,Klaus Widmann,C. B. Yeamans +54 more
TL;DR: The High-Foot platform as discussed by the authors manipulates the laser pulse-shape coming from the National Ignition Facility laser to create an indirect drive 3-shock implosion that is significantly more robust against instability growth involving the ablator and also modestly reduces implosion convergence ratio.
Journal ArticleDOI
Metrics for long wavelength asymmetries in inertial confinement fusion implosions on the National Ignition Facility
Andrea Kritcher,Richard Town,D. K. Bradley,David E. Clark,Brian Spears,O. S. Jones,S. W. Haan,P. T. Springer,J. D. Lindl,Robbie Scott,Debra Callahan,M. J. Edwards,Otto Landen +12 more
TL;DR: In this article, the authors investigated yield degradation due to applied low mode P2 and P4 asymmetries in layered inertial confinement fusion implosions and developed a metric, which is a function of the hot spot shape, fuel ρR shape, and residual kinetic energy at peak compression.
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