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Title: Implosion shape control of high-velocity, large case-to-capsule ratio beryllium ablators at the National Ignition Facility

Abstract

Experiments at the National Ignition Facility (NIF) show that the implosion shape of inertial confinement fusion ablators is a key factor limiting performance. To achieve more predictable, shape tunable implosions, we have designed and fielded a large 4.2 case-to-capsule ratio target at the NIF using 6.72 mm diameter Au hohlraums and 1.6 mm diameter Cu-doped Be capsules. Simulations show that at these dimensions during a 10 ns 3-shock laser pulse reaching 275 eV hohlraum temperatures, the plasma flow from the hohlraum wall and ablator is not significant enough to impede beam propagation. Experiments measuring the shock symmetry and in-flight shell symmetry closely matched the simulations. Most notably, in two experiments, we demonstrated symmetry control from negative to positive Legendre P2 space by varying the inner to total laser power cone fraction by 5% below and above the predicted symmetric value. In conclusion, some discrepancies found in 1st shock arrival times that could affect agreement in late time implosion symmetry suggest hohlraum and capsule modeling uncertainties do remain, but this target design reduces sensitivities to them.

Authors:
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+ Show Author Affiliations
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  5. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1463550
Alternate Identifier(s):
OSTI ID: 1461928
Report Number(s):
LA-UR-17-29075
Journal ID: ISSN 1070-664X; TRN: US1902315
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 7; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Loomis, E. N., Yi, Sunghwan A., Kyrala, George Amine, Kline, John L., Simakov, Andrei N., Ralph, Joseph, Millot, Marius, Dewald, Edouard, Zylstra, Alex, Rygg, J. R., Celliers, P., Goyon, C., Lahmann, B., Sio, H., MacLaren, Stephen, Masse, Laurent, Callahan, Debra, Hurricane, Omar, Wilson, Douglas Carl, Rice, Neal, Huang, Haibo, Kong, C., Bae, J., Nikroo, Abbas, and Batha, Steven H. Implosion shape control of high-velocity, large case-to-capsule ratio beryllium ablators at the National Ignition Facility. United States: N. p., 2018. Web. doi:10.1063/1.5040995.
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Loomis, E. N., Yi, Sunghwan A., Kyrala, George Amine, Kline, John L., Simakov, Andrei N., Ralph, Joseph, Millot, Marius, Dewald, Edouard, Zylstra, Alex, Rygg, J. R., Celliers, P., Goyon, C., Lahmann, B., Sio, H., MacLaren, Stephen, Masse, Laurent, Callahan, Debra, Hurricane, Omar, Wilson, Douglas Carl, Rice, Neal, Huang, Haibo, Kong, C., Bae, J., Nikroo, Abbas, & Batha, Steven H. Implosion shape control of high-velocity, large case-to-capsule ratio beryllium ablators at the National Ignition Facility. United States. doi:10.1063/1.5040995.
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Loomis, E. N., Yi, Sunghwan A., Kyrala, George Amine, Kline, John L., Simakov, Andrei N., Ralph, Joseph, Millot, Marius, Dewald, Edouard, Zylstra, Alex, Rygg, J. R., Celliers, P., Goyon, C., Lahmann, B., Sio, H., MacLaren, Stephen, Masse, Laurent, Callahan, Debra, Hurricane, Omar, Wilson, Douglas Carl, Rice, Neal, Huang, Haibo, Kong, C., Bae, J., Nikroo, Abbas, and Batha, Steven H. Sun . "Implosion shape control of high-velocity, large case-to-capsule ratio beryllium ablators at the National Ignition Facility". United States. doi:10.1063/1.5040995. https://www.osti.gov/servlets/purl/1463550.
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@article{osti_1463550,
title = {Implosion shape control of high-velocity, large case-to-capsule ratio beryllium ablators at the National Ignition Facility},
author = {Loomis, E. N. and Yi, Sunghwan A. and Kyrala, George Amine and Kline, John L. and Simakov, Andrei N. and Ralph, Joseph and Millot, Marius and Dewald, Edouard and Zylstra, Alex and Rygg, J. R. and Celliers, P. and Goyon, C. and Lahmann, B. and Sio, H. and MacLaren, Stephen and Masse, Laurent and Callahan, Debra and Hurricane, Omar and Wilson, Douglas Carl and Rice, Neal and Huang, Haibo and Kong, C. and Bae, J. and Nikroo, Abbas and Batha, Steven H.},
abstractNote = {Experiments at the National Ignition Facility (NIF) show that the implosion shape of inertial confinement fusion ablators is a key factor limiting performance. To achieve more predictable, shape tunable implosions, we have designed and fielded a large 4.2 case-to-capsule ratio target at the NIF using 6.72 mm diameter Au hohlraums and 1.6 mm diameter Cu-doped Be capsules. Simulations show that at these dimensions during a 10 ns 3-shock laser pulse reaching 275 eV hohlraum temperatures, the plasma flow from the hohlraum wall and ablator is not significant enough to impede beam propagation. Experiments measuring the shock symmetry and in-flight shell symmetry closely matched the simulations. Most notably, in two experiments, we demonstrated symmetry control from negative to positive Legendre P2 space by varying the inner to total laser power cone fraction by 5% below and above the predicted symmetric value. In conclusion, some discrepancies found in 1st shock arrival times that could affect agreement in late time implosion symmetry suggest hohlraum and capsule modeling uncertainties do remain, but this target design reduces sensitivities to them.},
doi = {10.1063/1.5040995},
journal = {Physics of Plasmas},
number = 7,
volume = 25,
place = {United States},
year = {2018},
month = {7}
}
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DOI:  10.1063/1.5040995
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Works referenced in this record:

Performance and Mix Measurements of Indirect Drive Cu-Doped Be Implosions
journal, May 2015

Exploring the limits of case-to-capsule ratio, pulse length, and picket energy for symmetric hohlraum drive on the National Ignition Facility Laser
journal, May 2018

  • Callahan, D. A.; Hurricane, O. A.; Ralph, J. E.
  • Physics of Plasmas, Vol. 25, Issue 5
  • DOI: 10.1063/1.5020057

Symmetry tuning of a near one-dimensional 2-shock platform for code validation at the National Ignition Facility
journal, April 2016

  • Khan, S. F.; MacLaren, S. A.; Salmonson, J. D.
  • Physics of Plasmas, Vol. 23, Issue 4
  • DOI: 10.1063/1.4947223

Symmetry tuning for ignition capsules via the symcap technique
journal, May 2011

  • Kyrala, G. A.; Kline, J. L.; Dixit, S.
  • Physics of Plasmas, Vol. 18, Issue 5
  • DOI: 10.1063/1.3574504

Extracting core shape from x-ray images at the National Ignition Facility
journal, October 2012

  • Glenn, S. M.; Benedetti, L. R.; Bradley, D. K.
  • Review of Scientific Instruments, Vol. 83, Issue 10
  • DOI: 10.1063/1.4731743

Optimized beryllium target design for indirectly driven inertial confinement fusion experiments on the National Ignition Facility
journal, February 2014

  • Simakov, Andrei N.; Wilson, Douglas C.; Yi, Sunghwan A.
  • Physics of Plasmas, Vol. 21, Issue 2
  • DOI: 10.1063/1.4864331

First beryllium capsule implosions on the National Ignition Facility
journal, May 2016

  • Kline, J. L.; Yi, S. A.; Simakov, A. N.
  • Physics of Plasmas, Vol. 23, Issue 5
  • DOI: 10.1063/1.4948277

A review of the ablative stabilization of the Rayleigh–Taylor instability in regimes relevant to inertial confinement fusion
journal, May 1994

  • Kilkenny, J. D.; Glendinning, S. G.; Haan, S. W.
  • Physics of Plasmas, Vol. 1, Issue 5
  • DOI: 10.1063/1.870688

Fuel gain exceeding unity in an inertially confined fusion implosion
journal, February 2014

  • Hurricane, O. A.; Callahan, D. A.; Casey, D. T.
  • Nature, Vol. 506, Issue 7488
  • DOI: 10.1038/nature13008

X-ray ablation rates in inertial confinement fusion capsule materials
journal, March 2011

  • Olson, R. E.; Rochau, G. A.; Landen, O. L.
  • Physics of Plasmas, Vol. 18, Issue 3
  • DOI: 10.1063/1.3566009

Tuning indirect-drive implosions using cone power balance
journal, July 2011

  • Kyrala, G. A.; Seifter, A.; Kline, J. L.
  • Physics of Plasmas, Vol. 18, Issue 7
  • DOI: 10.1063/1.3598179

Interplay of Laser-Plasma Interactions and Inertial Fusion Hydrodynamics
journal, January 2017

A high-resolution integrated model of the National Ignition Campaign cryogenic layered experiments
journal, May 2012

  • Jones, O. S.; Cerjan, C. J.; Marinak, M. M.
  • Physics of Plasmas, Vol. 19, Issue 5
  • DOI: 10.1063/1.4718595

Generation and Beaming of Early Hot Electrons onto the Capsule in Laser-Driven Ignition Hohlraums
journal, February 2016

Progress toward fabrication of graded doped beryllium and CH capsules for the National Ignition Facility
journal, May 2006

  • Nikroo, A.; Chen, K. C.; Hoppe, M. L.
  • Physics of Plasmas, Vol. 13, Issue 5
  • DOI: 10.1063/1.2179054

Prototypes of National Ignition Facility neutron time-of-flight detectors tested on OMEGA
journal, October 2004

  • Glebov, V. Yu.; Stoeckl, C.; Sangster, T. C.
  • Review of Scientific Instruments, Vol. 75, Issue 10
  • DOI: 10.1063/1.1788875

Status of the development of ignition capsules in the U.S. effort to achieve thermonuclear ignition on the national ignition facility
journal, October 2006

Precision Shock Tuning on the National Ignition Facility
journal, May 2012

The production spectrum in fusion plasmas
journal, February 2011

Metrics for long wavelength asymmetries in inertial confinement fusion implosions on the National Ignition Facility
journal, April 2014

  • Kritcher, A. L.; Town, R.; Bradley, D.
  • Physics of Plasmas, Vol. 21, Issue 4
  • DOI: 10.1063/1.4871718

The near vacuum hohlraum campaign at the NIF: A new approach
journal, May 2016

  • Le Pape, S.; Berzak Hopkins, L. F.; Divol, L.
  • Physics of Plasmas, Vol. 23, Issue 5
  • DOI: 10.1063/1.4950843

The effect of turbulent kinetic energy on inferred ion temperature from neutron spectra
journal, July 2014

2D X-Ray Radiography of Imploding Capsules at the National Ignition Facility
journal, May 2014

Tuning the Implosion Symmetry of ICF Targets via Controlled Crossed-Beam Energy Transfer
journal, January 2009

The effect of laser pulse shape variations on the adiabat of NIF capsule implosions
journal, May 2013

  • Robey, H. F.; MacGowan, B. J.; Landen, O. L.
  • Physics of Plasmas, Vol. 20, Issue 5
  • DOI: 10.1063/1.4807331

Cryogenic tritium-hydrogen-deuterium and deuterium-tritium layer implosions with high density carbon ablators in near-vacuum hohlraums
journal, June 2015

  • Meezan, N. B.; Berzak Hopkins, L. F.; Le Pape, S.
  • Physics of Plasmas, Vol. 22, Issue 6
  • DOI: 10.1063/1.4921947

Hydrodynamic instabilities in beryllium targets for the National Ignition Facility
journal, September 2014

  • Yi, S. A.; Simakov, A. N.; Wilson, D. C.
  • Physics of Plasmas, Vol. 21, Issue 9
  • DOI: 10.1063/1.4894112

Shock-Induced Transformation of Liquid Deuterium into a Metallic Fluid
journal, June 2000

Increasing robustness of indirect drive capsule designs against short wavelength hydrodynamic instabilities
journal, May 2005

  • Haan, S. W.; Herrmann, M. C.; Dittrich, T. R.
  • Physics of Plasmas, Vol. 12, Issue 5
  • DOI: 10.1063/1.1885003

Multiple-beam laser–plasma interactions in inertial confinement fusion
journal, May 2014

  • Myatt, J. F.; Zhang, J.; Short, R. W.
  • Physics of Plasmas, Vol. 21, Issue 5
  • DOI: 10.1063/1.4878623

The National Ignition Facility neutron time-of-flight system and its initial performance (invited)
journal, October 2010

  • Glebov, V. Yu.; Sangster, T. C.; Stoeckl, C.
  • Review of Scientific Instruments, Vol. 81, Issue 10
  • DOI: 10.1063/1.3492351

Performance of beryllium targets with full-scale capsules in low-fill 6.72-mm hohlraums on the National Ignition Facility
journal, May 2017

  • Simakov, A. N.; Wilson, D. C.; Yi, S. A.
  • Physics of Plasmas, Vol. 24, Issue 5
  • DOI: 10.1063/1.4983141

The development and advantages of beryllium capsules for the National Ignition Facility
journal, May 1998

  • Wilson, Douglas C.; Bradley, Paul A.; Hoffman, Nelson M.
  • Physics of Plasmas, Vol. 5, Issue 5
  • DOI: 10.1063/1.872865

Dynamic symmetry of indirectly driven inertial confinement fusion capsules on the National Ignition Facility
journal, May 2014

  • Town, R. P. J.; Bradley, D. K.; Kritcher, A.
  • Physics of Plasmas, Vol. 21, Issue 5
  • DOI: 10.1063/1.4876609

Near-vacuum hohlraums for driving fusion implosions with high density carbon ablatorsa)
journal, May 2015

  • Berzak Hopkins, L. F.; Le Pape, S.; Divol, L.
  • Physics of Plasmas, Vol. 22, Issue 5
  • DOI: 10.1063/1.4921151

Symmetry control of an indirectly driven high-density-carbon implosion at high convergence and high velocity
journal, May 2017

  • Divol, L.; Pak, A.; Berzak Hopkins, L. F.
  • Physics of Plasmas, Vol. 24, Issue 5
  • DOI: 10.1063/1.4982215

Nonlinear theory of power transfer between multiple crossed laser beams in a flowing plasma
journal, May 1998

  • Rose, Harvey A.; Ghosal, Sandip
  • Physics of Plasmas, Vol. 5, Issue 5
  • DOI: 10.1063/1.872804

Three-dimensional HYDRA simulations of National Ignition Facility targets
journal, May 2001

  • Marinak, M. M.; Kerbel, G. D.; Gentile, N. A.
  • Physics of Plasmas, Vol. 8, Issue 5
  • DOI: 10.1063/1.1356740

Examining the radiation drive asymmetries present in the high foot series of implosion experiments at the National Ignition Facility
journal, May 2017

  • Pak, A.; Divol, L.; Kritcher, A. L.
  • Physics of Plasmas, Vol. 24, Issue 5
  • DOI: 10.1063/1.4979192
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    Works referencing / citing this record:

    Beryllium capsule implosions at a case-to-capsule ratio of 3.7 on the National Ignition Facility
    journal, October 2018

    • Zylstra, A. B.; Yi, S. A.; MacLaren, S.
    • Physics of Plasmas, Vol. 25, Issue 10
    • DOI: 10.1063/1.5041285

    Progress toward a self-consistent set of 1D ignition capsule metrics in ICF
    journal, December 2018

    • Lindl, J. D.; Haan, S. W.; Landen, O. L.
    • Physics of Plasmas, Vol. 25, Issue 12
    • DOI: 10.1063/1.5049595

    Improved inertial confinement fusion gamma reaction history 12 C gamma-ray signal by direct subtraction
    journal, November 2019

    • Meaney, K. D.; Kim, Y. H.; Herrmann, H. W.
    • Review of Scientific Instruments, Vol. 90, Issue 11
    • DOI: 10.1063/1.5092501

    Implosion performance of subscale beryllium capsules on the NIF
    journal, May 2019

    • Zylstra, A. B.; MacLaren, S.; Yi, S. A.
    • Physics of Plasmas, Vol. 26, Issue 5
    • DOI: 10.1063/1.5098319

    Progress of indirect drive inertial confinement fusion in the United States
    journal, July 2019

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