Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: The near vacuum hohlraum campaign at the NIF: A new approach

Abstract

Here, the near vacuum campaign on the National Ignition Facility has concentrated its efforts over the last year on finding the optimum target geometry to drive a symmetric implosion at high convergence ratio (30). As the hohlraum walls are not tamped with gas, the hohlraum is filling with gold plasma and the challenge resides in depositing enough energy in the hohlraum before it fills up. Hohlraum filling is believed to cause symmetry swings late in the pulse that are detrimental to the symmetry of the hot spot at high convergence. This paper describes a series of experiments carried out to examine the effect of increasing the distance between the hohlraum wall and the capsule (case to capsule ratio) on the symmetry of the hot spot. These experiments have shown that smaller Case to Capsule Ratio (CCR of 2.87 and 3.1) resulted in oblate implosions that could not be tuned round. Larger CCR (3.4) led to a prolate implosion at convergence 30 implying that inner beam propagation at large CCR is not impeded by the expanding hohlraum plasma. A Case to Capsule ratio of 3.4 is a promising geometry to design a round implosion but in a smaller hohlraum where themore » hohlraum losses are lower, enabling a wider cone fraction range to adjust symmetry.« less

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [1] more »; ORCiD logo [1]; ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [3];  [1]; ORCiD logo [1];  [4];  [4];  [4]; ORCiD logo [4]; ORCiD logo [5];  [1];  [1];  [1];  [1] « less
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. General Atomics, San Diego, CA (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1260965
Alternate Identifier(s):
OSTI ID: 1254368; OSTI ID: 1260966; OSTI ID: 1260967
Grant/Contract Number:  
NA0002726; AC52-07NA27344; NA0001857; NA0002949
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 5; 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; hohlraum; x-ray imaging; gold; neutrons; plasma temperature

Citation Formats

Le Pape, S., Berzak Hopkins, L. F., Divol, L., Meezan, N., Turnbull, D., Mackinnon, A. J., Ho, D., Ross, J. S., Khan, S., Pak, A., Dewald, E., Benedetti, L. R., Nagel, S., Biener, J., Callahan, D. A., Yeamans, C., Michel, P., Schneider, M., Kozioziemski, B., Ma, T., Macphee, A. G., Haan, S., Izumi, N., Hatarik, R., Sterne, P., Celliers, P., Ralph, J., Rygg, R., Strozzi, D., Kilkenny, J., Rosenberg, M., Rinderknecht, H., Sio, H., Gatu-Johnson, M., Frenje, J., Petrasso, R., Zylstra, A., Town, R., Hurricane, O., Nikroo, A., and Edwards, M. J. The near vacuum hohlraum campaign at the NIF: A new approach. United States: N. p., 2016. Web. doi:10.1063/1.4950843.
Copy to clipboard
Le Pape, S., Berzak Hopkins, L. F., Divol, L., Meezan, N., Turnbull, D., Mackinnon, A. J., Ho, D., Ross, J. S., Khan, S., Pak, A., Dewald, E., Benedetti, L. R., Nagel, S., Biener, J., Callahan, D. A., Yeamans, C., Michel, P., Schneider, M., Kozioziemski, B., Ma, T., Macphee, A. G., Haan, S., Izumi, N., Hatarik, R., Sterne, P., Celliers, P., Ralph, J., Rygg, R., Strozzi, D., Kilkenny, J., Rosenberg, M., Rinderknecht, H., Sio, H., Gatu-Johnson, M., Frenje, J., Petrasso, R., Zylstra, A., Town, R., Hurricane, O., Nikroo, A., & Edwards, M. J. The near vacuum hohlraum campaign at the NIF: A new approach. United States. https://doi.org/10.1063/1.4950843
Copy to clipboard
Le Pape, S., Berzak Hopkins, L. F., Divol, L., Meezan, N., Turnbull, D., Mackinnon, A. J., Ho, D., Ross, J. S., Khan, S., Pak, A., Dewald, E., Benedetti, L. R., Nagel, S., Biener, J., Callahan, D. A., Yeamans, C., Michel, P., Schneider, M., Kozioziemski, B., Ma, T., Macphee, A. G., Haan, S., Izumi, N., Hatarik, R., Sterne, P., Celliers, P., Ralph, J., Rygg, R., Strozzi, D., Kilkenny, J., Rosenberg, M., Rinderknecht, H., Sio, H., Gatu-Johnson, M., Frenje, J., Petrasso, R., Zylstra, A., Town, R., Hurricane, O., Nikroo, A., and Edwards, M. J. Wed . "The near vacuum hohlraum campaign at the NIF: A new approach". United States. https://doi.org/10.1063/1.4950843. https://www.osti.gov/servlets/purl/1260965.
Copy to clipboard
@article{osti_1260965,
title = {The near vacuum hohlraum campaign at the NIF: A new approach},
author = {Le Pape, S. and Berzak Hopkins, L. F. and Divol, L. and Meezan, N. and Turnbull, D. and Mackinnon, A. J. and Ho, D. and Ross, J. S. and Khan, S. and Pak, A. and Dewald, E. and Benedetti, L. R. and Nagel, S. and Biener, J. and Callahan, D. A. and Yeamans, C. and Michel, P. and Schneider, M. and Kozioziemski, B. and Ma, T. and Macphee, A. G. and Haan, S. and Izumi, N. and Hatarik, R. and Sterne, P. and Celliers, P. and Ralph, J. and Rygg, R. and Strozzi, D. and Kilkenny, J. and Rosenberg, M. and Rinderknecht, H. and Sio, H. and Gatu-Johnson, M. and Frenje, J. and Petrasso, R. and Zylstra, A. and Town, R. and Hurricane, O. and Nikroo, A. and Edwards, M. J.},
abstractNote = {Here, the near vacuum campaign on the National Ignition Facility has concentrated its efforts over the last year on finding the optimum target geometry to drive a symmetric implosion at high convergence ratio (30). As the hohlraum walls are not tamped with gas, the hohlraum is filling with gold plasma and the challenge resides in depositing enough energy in the hohlraum before it fills up. Hohlraum filling is believed to cause symmetry swings late in the pulse that are detrimental to the symmetry of the hot spot at high convergence. This paper describes a series of experiments carried out to examine the effect of increasing the distance between the hohlraum wall and the capsule (case to capsule ratio) on the symmetry of the hot spot. These experiments have shown that smaller Case to Capsule Ratio (CCR of 2.87 and 3.1) resulted in oblate implosions that could not be tuned round. Larger CCR (3.4) led to a prolate implosion at convergence 30 implying that inner beam propagation at large CCR is not impeded by the expanding hohlraum plasma. A Case to Capsule ratio of 3.4 is a promising geometry to design a round implosion but in a smaller hohlraum where the hohlraum losses are lower, enabling a wider cone fraction range to adjust symmetry.},
doi = {10.1063/1.4950843},
journal = {Physics of Plasmas},
number = 5,
volume = 23,
place = {United States},
year = {Wed May 25 00:00:00 EDT 2016},
month = {Wed May 25 00:00:00 EDT 2016}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1063/1.4950843
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

The physics basis for ignition using indirect-drive targets on the National Ignition Facility
journal, February 2004

  • Lindl, John D.; Amendt, Peter; Berger, Richard L.
  • Physics of Plasmas, Vol. 11, Issue 2
  • DOI: 10.1063/1.1578638

The National Ignition Facility: Ushering in a new age for high energy density science
journal, April 2009

  • Moses, E. I.; Boyd, R. N.; Remington, B. A.
  • Physics of Plasmas, Vol. 16, Issue 4
  • DOI: 10.1063/1.3116505

Design of a High-Foot High-Adiabat ICF Capsule for the National Ignition Facility
journal, February 2014

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

Progress towards ignition on the National Ignition Facility
journal, July 2013

  • Edwards, M. J.; Patel, P. K.; Lindl, J. D.
  • Physics of Plasmas, Vol. 20, Issue 7
  • DOI: 10.1063/1.4816115

Diamond spheres for inertial confinement fusion
journal, September 2009

High-density carbon capsule experiments on the national ignition facility
journal, February 2015

High-density carbon ablator experiments on the National Ignition Facility
journal, May 2014

  • MacKinnon, A. J.; Meezan, N. B.; Ross, J. S.
  • Physics of Plasmas, Vol. 21, Issue 5
  • DOI: 10.1063/1.4876611

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

Review of the National Ignition Campaign 2009-2012
journal, February 2014

  • Lindl, John; Landen, Otto; Edwards, John
  • Physics of Plasmas, Vol. 21, Issue 2
  • DOI: 10.1063/1.4865400

X-ray conversion efficiency in vacuum hohlraum experiments at the National Ignition Facility
journal, May 2012

  • Olson, R. E.; Suter, L. J.; Kline, J. L.
  • Physics of Plasmas, Vol. 19, Issue 5
  • DOI: 10.1063/1.4704795

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

First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum
journal, April 2015

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

Symmetry tuning via controlled crossed-beam energy transfer on the National Ignition Facility
journal, May 2010

  • Michel, P.; Glenzer, S. H.; Divol, L.
  • Physics of Plasmas, Vol. 17, Issue 5
  • DOI: 10.1063/1.3325733

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

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

Cryogenic thermonuclear fuel implosions on the National Ignition Facility
journal, May 2012

  • Glenzer, S. H.; Callahan, D. A.; MacKinnon, A. J.
  • Physics of Plasmas, Vol. 19, Issue 5
  • DOI: 10.1063/1.4719686

Quantitative characterization of inertial confinement fusion capsules using phase contrast enhanced x-ray imaging
journal, March 2005

  • Kozioziemski, B. J.; Koch, J. A.; Barty, A.
  • Journal of Applied Physics, Vol. 97, Issue 6
  • DOI: 10.1063/1.1862764

Measuring symmetry of implosions in cryogenic Hohlraums at the NIF using gated x-ray detectors (invited)
journal, October 2010

  • Kyrala, G. A.; Dixit, S.; Glenzer, S.
  • Review of Scientific Instruments, Vol. 81, Issue 10
  • DOI: 10.1063/1.3481028

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

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

Hohlraum energetics scaling to 520 TW on the National Ignition Facility
journal, May 2013

  • Kline, J. L.; Callahan, D. A.; Glenzer, S. H.
  • Physics of Plasmas, Vol. 20, Issue 5
  • DOI: 10.1063/1.4803907
    Sort by:
    [ × clear filter / sort ]

    Works referencing / citing this record:

    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

    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 effects of convergence ratio on the implosion behavior of DT layered inertial confinement fusion capsules
    journal, July 2017

    • Haines, Brian M.; Yi, S. A.; Olson, R. E.
    • Physics of Plasmas, Vol. 24, Issue 7
    • DOI: 10.1063/1.4993065

    Hollow wall to stabilize and enhance ignition hohlraums
    journal, January 2018

    • Vandenboomgaerde, M.; Grisollet, A.; Bonnefille, M.
    • Physics of Plasmas, Vol. 25, Issue 1
    • DOI: 10.1063/1.5008669

    Comparison of plastic, high density carbon, and beryllium as indirect drive NIF ablators
    journal, May 2018

    • Kritcher, A. L.; Clark, D.; Haan, S.
    • Physics of Plasmas, Vol. 25, Issue 5
    • DOI: 10.1063/1.5018000

    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

    Mitigation of X-ray shadow seeding of hydrodynamic instabilities on inertial confinement fusion capsules using a reduced diameter fuel fill-tube
    journal, May 2018

    • MacPhee, A. G.; Smalyuk, V. A.; Landen, O. L.
    • Physics of Plasmas, Vol. 25, Issue 5
    • DOI: 10.1063/1.5025183

    Increasing stagnation pressure and thermonuclear performance of inertial confinement fusion capsules by the introduction of a high-Z dopant
    journal, August 2018

    • Berzak Hopkins, L.; Divol, L.; Weber, C.
    • Physics of Plasmas, Vol. 25, Issue 8
    • DOI: 10.1063/1.5033459

    Hydrodynamic instabilities seeded by the X-ray shadow of ICF capsule fill-tubes
    journal, August 2018

    • MacPhee, A. G.; Smalyuk, V. A.; Landen, O. L.
    • Physics of Plasmas, Vol. 25, Issue 8
    • DOI: 10.1063/1.5037816

    First demonstration of improved capsule implosions by reducing radiation preheat in uranium vs gold hohlraums
    journal, September 2018

    • Dewald, E. L.; Tommasini, R.; Meezan, N. B.
    • Physics of Plasmas, Vol. 25, Issue 9
    • DOI: 10.1063/1.5039385

    Implosion shape control of high-velocity, large case-to-capsule ratio beryllium ablators at the National Ignition Facility
    journal, July 2018

    • Loomis, E. N.; Yi, S. A.; Kyrala, G. A.
    • Physics of Plasmas, Vol. 25, Issue 7
    • DOI: 10.1063/1.5040995

    Kinetic effects on neutron generation in moderately collisional interpenetrating plasma flows
    journal, January 2019

    • Higginson, D. P.; Ross, J. S.; Ryutov, D. D.
    • Physics of Plasmas, Vol. 26, Issue 1
    • DOI: 10.1063/1.5048386

    Hybrid particle-in-cell simulations of laser-driven plasma interpenetration, heating, and entrainment
    journal, November 2019

    • Higginson, D. P.; Amendt, P.; Meezan, N.
    • Physics of Plasmas, Vol. 26, Issue 11
    • DOI: 10.1063/1.5110512

    Maintaining low-mode symmetry control with extended pulse shapes for lower-adiabat Bigfoot implosions on the National Ignition Facility
    journal, November 2019

    • Hohenberger, M.; Casey, D. T.; Thomas, C. A.
    • Physics of Plasmas, Vol. 26, Issue 11
    • DOI: 10.1063/1.5121435

    Indirect drive ignition at the National Ignition Facility
    journal, October 2016

    Toward a burning plasma state using diamond ablator inertially confined fusion (ICF) implosions on the National Ignition Facility (NIF)
    journal, November 2018

    • Hopkins, L. Berzak; LePape, S.; Divol, L.
    • Plasma Physics and Controlled Fusion, Vol. 61, Issue 1
    • DOI: 10.1088/1361-6587/aad97e

    Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility
    journal, November 2018

    • Hurricane, O. A.; Callahan, D. A.; Springer, P. T.
    • Plasma Physics and Controlled Fusion, Vol. 61, Issue 1
    • DOI: 10.1088/1361-6587/aaed71

    Preliminary study on a tetrahedral hohlraum with four half-cylindrical cavities for indirectly driven inertial confinement fusion
    journal, March 2017

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

      Sort by:
      [ × clear filter / sort ]

      Similar Records in DOE PAGES and OSTI.GOV collections: