A near one-dimensional indirectly driven implosion at convergence ratio 30
Abstract
Inertial confinement fusion cryogenic-layered implosions at the National Ignition Facility, while successfully demonstrating self-heating due to alpha-particle deposition, have fallen short of the performance predicted by one-dimensional (1D) multi-physics implosion simulations. The current understanding, from experimental evidence as well as simulations, suggests that engineering features such as the capsule tent and fill tube, as well as time-dependent low-mode asymmetry, are to blame for the lack of agreement. A short series of experiments designed specifically to avoid these degradations to the implosion are described here in order to understand if, once they are removed, a high-convergence cryogenic-layered deuterium-tritium implosion can achieve the 1D simulated performance. The result is a cryogenic layered implosion, round at stagnation, that matches closely the performance predicted by 1D simulations. This agreement can then be exploited to examine the sensitivity of approximations in the model to the constraints imposed by the data.
- Authors:
-
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- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- General Atomics, La Jolla, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1566011
- Alternate Identifier(s):
- OSTI ID: 1433564
- Report Number(s):
- LLNL-JRNL-742393
Journal ID: ISSN 1070-664X; 897058; TRN: US2000956
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; 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
Citation Formats
MacLaren, S. A., Masse, L. P., Czajka, C. E., Khan, S. F., Kyrala, G. A., Ma, T., Ralph, J. E., Salmonson, J. D., Bachmann, B., Benedetti, L. R., Bhandarkar, S. D., Bradley, P. A., Hatarik, R., Herrmann, H. W., Mariscal, D. A., Millot, M., Patel, P. K., Pino, J. E., Ratledge, M., Rice, N. G., Tipton, R. E., Tommasini, R., and Yeamans, C. B. A near one-dimensional indirectly driven implosion at convergence ratio 30. United States: N. p., 2018.
Web. doi:10.1063/1.5017976.
MacLaren, S. A., Masse, L. P., Czajka, C. E., Khan, S. F., Kyrala, G. A., Ma, T., Ralph, J. E., Salmonson, J. D., Bachmann, B., Benedetti, L. R., Bhandarkar, S. D., Bradley, P. A., Hatarik, R., Herrmann, H. W., Mariscal, D. A., Millot, M., Patel, P. K., Pino, J. E., Ratledge, M., Rice, N. G., Tipton, R. E., Tommasini, R., & Yeamans, C. B. A near one-dimensional indirectly driven implosion at convergence ratio 30. United States. https://doi.org/10.1063/1.5017976
MacLaren, S. A., Masse, L. P., Czajka, C. E., Khan, S. F., Kyrala, G. A., Ma, T., Ralph, J. E., Salmonson, J. D., Bachmann, B., Benedetti, L. R., Bhandarkar, S. D., Bradley, P. A., Hatarik, R., Herrmann, H. W., Mariscal, D. A., Millot, M., Patel, P. K., Pino, J. E., Ratledge, M., Rice, N. G., Tipton, R. E., Tommasini, R., and Yeamans, C. B. Wed .
"A near one-dimensional indirectly driven implosion at convergence ratio 30". United States. https://doi.org/10.1063/1.5017976. https://www.osti.gov/servlets/purl/1566011.
@article{osti_1566011,
title = {A near one-dimensional indirectly driven implosion at convergence ratio 30},
author = {MacLaren, S. A. and Masse, L. P. and Czajka, C. E. and Khan, S. F. and Kyrala, G. A. and Ma, T. and Ralph, J. E. and Salmonson, J. D. and Bachmann, B. and Benedetti, L. R. and Bhandarkar, S. D. and Bradley, P. A. and Hatarik, R. and Herrmann, H. W. and Mariscal, D. A. and Millot, M. and Patel, P. K. and Pino, J. E. and Ratledge, M. and Rice, N. G. and Tipton, R. E. and Tommasini, R. and Yeamans, C. B.},
abstractNote = {Inertial confinement fusion cryogenic-layered implosions at the National Ignition Facility, while successfully demonstrating self-heating due to alpha-particle deposition, have fallen short of the performance predicted by one-dimensional (1D) multi-physics implosion simulations. The current understanding, from experimental evidence as well as simulations, suggests that engineering features such as the capsule tent and fill tube, as well as time-dependent low-mode asymmetry, are to blame for the lack of agreement. A short series of experiments designed specifically to avoid these degradations to the implosion are described here in order to understand if, once they are removed, a high-convergence cryogenic-layered deuterium-tritium implosion can achieve the 1D simulated performance. The result is a cryogenic layered implosion, round at stagnation, that matches closely the performance predicted by 1D simulations. This agreement can then be exploited to examine the sensitivity of approximations in the model to the constraints imposed by the data.},
doi = {10.1063/1.5017976},
journal = {Physics of Plasmas},
number = 5,
volume = 25,
place = {United States},
year = {Wed Apr 18 00:00:00 EDT 2018},
month = {Wed Apr 18 00:00:00 EDT 2018}
}
Web of Science
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Works referencing / citing this record:
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