Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility
Abstract
Recent progress on indirectly-driven inertial confinement fusion (ICF) work at the National Ignition Facility (NIF) is briefly reviewed. An analytic criteria for an ICF burning plasma is given and compared to recent ICF implosion data from the NIF. Scaling of key hot-spot performance metrics is derived from simple physics considerations, including some speculative impacts of asymmetry on the assembly and disassembly of an ICF implosion. A steepest descent solution for the nonlinear equation for hot-spot pressure at peak compression, with the full effects of alpha-heating, is also given. To test if the scalings derived in this paper have some merit, they are compared to data from a variety of recent implosion campaigns on NIF and good agreement is observed. Given the implications of the scalings and existing data, a strategy for injecting more energy into the hot-spot of NIF indirectly driven ICF implosions is defined and the principles of the strategy is discussed. The importance of implosion velocity, late-time ablation pressure, and implosion scale with good symmetry in obtaining the goal of ~50% more hot-spot energy are highlighted along with the limitations of trying to leverage low fuel-adiabat.
- Authors:
-
more »
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1524748
- Report Number(s):
- LLNL-JRNL-756923
Journal ID: ISSN 0741-3335; 944627
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Physics and Controlled Fusion
- Additional Journal Information:
- Journal Volume: 61; Journal Issue: 1; Journal ID: ISSN 0741-3335
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Hurricane, O. A., Callahan, D. A., Springer, P. T., Edwards, M. J., Patel, P., Baker, K., Casey, D. T., Divol, L., Döppner, T., Hinkel, D. E., Berzak Hopkins, L. F., Kritcher, A., Le Pape, S., Maclaren, S., Masse, L., Pak, A., Pickworth, L., Ralph, J., Thomas, C., Yi, A., and Zylstra, A. Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility. United States: N. p., 2018.
Web. doi:10.1088/1361-6587/aaed71.
Hurricane, O. A., Callahan, D. A., Springer, P. T., Edwards, M. J., Patel, P., Baker, K., Casey, D. T., Divol, L., Döppner, T., Hinkel, D. E., Berzak Hopkins, L. F., Kritcher, A., Le Pape, S., Maclaren, S., Masse, L., Pak, A., Pickworth, L., Ralph, J., Thomas, C., Yi, A., & Zylstra, A. Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility. United States. https://doi.org/10.1088/1361-6587/aaed71
Hurricane, O. A., Callahan, D. A., Springer, P. T., Edwards, M. J., Patel, P., Baker, K., Casey, D. T., Divol, L., Döppner, T., Hinkel, D. E., Berzak Hopkins, L. F., Kritcher, A., Le Pape, S., Maclaren, S., Masse, L., Pak, A., Pickworth, L., Ralph, J., Thomas, C., Yi, A., and Zylstra, A. Thu .
"Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility". United States. https://doi.org/10.1088/1361-6587/aaed71. https://www.osti.gov/servlets/purl/1524748.
@article{osti_1524748,
title = {Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility},
author = {Hurricane, O. A. and Callahan, D. A. and Springer, P. T. and Edwards, M. J. and Patel, P. and Baker, K. and Casey, D. T. and Divol, L. and Döppner, T. and Hinkel, D. E. and Berzak Hopkins, L. F. and Kritcher, A. and Le Pape, S. and Maclaren, S. and Masse, L. and Pak, A. and Pickworth, L. and Ralph, J. and Thomas, C. and Yi, A. and Zylstra, A.},
abstractNote = {Recent progress on indirectly-driven inertial confinement fusion (ICF) work at the National Ignition Facility (NIF) is briefly reviewed. An analytic criteria for an ICF burning plasma is given and compared to recent ICF implosion data from the NIF. Scaling of key hot-spot performance metrics is derived from simple physics considerations, including some speculative impacts of asymmetry on the assembly and disassembly of an ICF implosion. A steepest descent solution for the nonlinear equation for hot-spot pressure at peak compression, with the full effects of alpha-heating, is also given. To test if the scalings derived in this paper have some merit, they are compared to data from a variety of recent implosion campaigns on NIF and good agreement is observed. Given the implications of the scalings and existing data, a strategy for injecting more energy into the hot-spot of NIF indirectly driven ICF implosions is defined and the principles of the strategy is discussed. The importance of implosion velocity, late-time ablation pressure, and implosion scale with good symmetry in obtaining the goal of ~50% more hot-spot energy are highlighted along with the limitations of trying to leverage low fuel-adiabat.},
doi = {10.1088/1361-6587/aaed71},
journal = {Plasma Physics and Controlled Fusion},
number = 1,
volume = 61,
place = {United States},
year = {Thu Nov 01 00:00:00 EDT 2018},
month = {Thu Nov 01 00:00:00 EDT 2018}
}
Web of Science
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Works referencing / citing this record:
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