First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum
Recent experiments on the National Ignition Facility [M. J. Edwards et al., Phys. Plasmas 20, 070501 (2013)] demonstrate that utilizing a near-vacuum hohlraum (low pressure gas-filled) is a viable option for high convergence cryogenic deuterium-tritium (DT) layered capsule implosions. This is made p...
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| Format: | Article |
| Language: | English |
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American Physical Society
2015
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| Online Access: | http://hdl.handle.net/1721.1/96849 |
| _version_ | 1826198741047050240 |
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| author | Berzak Hopkins, L. F. Meezan, N. B. Le Pape, S. Divol, L. Mackinnon, A. J. Ho, D. D. Hohenberger, M. Jones, O. S. Kyrala, G. A. Milovich, J. L. Pak, A. Ralph, J. E. Ross, J. S. Benedetti, L. R. Biener, J. Bionta, R. Bond, E. Bradley, D. Caggiano, J. Callahan, D. A. Cerjan, C. J. Church, J. Clark, D. Doppner, T. Dylla-Spears, R. Eckart, M. Edgell, D. Field, J. Fittinghoff, D. N. Grim, G. Guler, N. Haan, S. W. Hamza, A. Hartouni, E. P. Hatarik, R. Herrmann, H. W. Hinkel, D. E. Hoover, D. Huang, H. Izumi, N. Khan, S. F. Kozioziemski, B. Kroll, J. Ma, T. MacPhee, A. G. McNaney, J. Merrill, F. E. Moody, J. D. Nikroo, A. Patel, P. Robey, H. F. Rygg, J. R. Sater, J. Sayre, D. Schneider, M. Sepke, S. Stadermann, M. Stoeffl, W. Thomas, C. Town, R. P. J. Volegov, P. L. Wild, C. Wilde, C. Woerner, E. Yeamans, C. Yoxall, B. Kilkenny, J. D. Landen, O. L. Hsing, W. W. Edwards, M. J. Gatu Johnson, Maria |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Berzak Hopkins, L. F. Meezan, N. B. Le Pape, S. Divol, L. Mackinnon, A. J. Ho, D. D. Hohenberger, M. Jones, O. S. Kyrala, G. A. Milovich, J. L. Pak, A. Ralph, J. E. Ross, J. S. Benedetti, L. R. Biener, J. Bionta, R. Bond, E. Bradley, D. Caggiano, J. Callahan, D. A. Cerjan, C. J. Church, J. Clark, D. Doppner, T. Dylla-Spears, R. Eckart, M. Edgell, D. Field, J. Fittinghoff, D. N. Grim, G. Guler, N. Haan, S. W. Hamza, A. Hartouni, E. P. Hatarik, R. Herrmann, H. W. Hinkel, D. E. Hoover, D. Huang, H. Izumi, N. Khan, S. F. Kozioziemski, B. Kroll, J. Ma, T. MacPhee, A. G. McNaney, J. Merrill, F. E. Moody, J. D. Nikroo, A. Patel, P. Robey, H. F. Rygg, J. R. Sater, J. Sayre, D. Schneider, M. Sepke, S. Stadermann, M. Stoeffl, W. Thomas, C. Town, R. P. J. Volegov, P. L. Wild, C. Wilde, C. Woerner, E. Yeamans, C. Yoxall, B. Kilkenny, J. D. Landen, O. L. Hsing, W. W. Edwards, M. J. Gatu Johnson, Maria |
| author_sort | Berzak Hopkins, L. F. |
| collection | MIT |
| description | Recent experiments on the National Ignition Facility [M. J. Edwards et al., Phys. Plasmas 20, 070501 (2013)] demonstrate that utilizing a near-vacuum hohlraum (low pressure gas-filled) is a viable option for high convergence cryogenic deuterium-tritium (DT) layered capsule implosions. This is made possible by using a dense ablator (high-density carbon), which shortens the drive duration needed to achieve high convergence: a measured 40% higher hohlraum efficiency than typical gas-filled hohlraums, which requires less laser energy going into the hohlraum, and an observed better symmetry control than anticipated by standard hydrodynamics simulations. The first series of near-vacuum hohlraum experiments culminated in a 6.8 ns, 1.2 MJ laser pulse driving a 2-shock, high adiabat (α ~ 3.5) cryogenic DT layered high density carbon capsule. This resulted in one of the best performances so far on the NIF relative to laser energy, with a measured primary neutron yield of 1.8×10[superscript 15] neutrons, with 20% calculated alpha heating at convergence ~27×. |
| first_indexed | 2024-09-23T11:09:22Z |
| format | Article |
| id | mit-1721.1/96849 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:09:22Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/968492022-10-01T01:36:39Z First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum Berzak Hopkins, L. F. Meezan, N. B. Le Pape, S. Divol, L. Mackinnon, A. J. Ho, D. D. Hohenberger, M. Jones, O. S. Kyrala, G. A. Milovich, J. L. Pak, A. Ralph, J. E. Ross, J. S. Benedetti, L. R. Biener, J. Bionta, R. Bond, E. Bradley, D. Caggiano, J. Callahan, D. A. Cerjan, C. J. Church, J. Clark, D. Doppner, T. Dylla-Spears, R. Eckart, M. Edgell, D. Field, J. Fittinghoff, D. N. Grim, G. Guler, N. Haan, S. W. Hamza, A. Hartouni, E. P. Hatarik, R. Herrmann, H. W. Hinkel, D. E. Hoover, D. Huang, H. Izumi, N. Khan, S. F. Kozioziemski, B. Kroll, J. Ma, T. MacPhee, A. G. McNaney, J. Merrill, F. E. Moody, J. D. Nikroo, A. Patel, P. Robey, H. F. Rygg, J. R. Sater, J. Sayre, D. Schneider, M. Sepke, S. Stadermann, M. Stoeffl, W. Thomas, C. Town, R. P. J. Volegov, P. L. Wild, C. Wilde, C. Woerner, E. Yeamans, C. Yoxall, B. Kilkenny, J. D. Landen, O. L. Hsing, W. W. Edwards, M. J. Gatu Johnson, Maria Massachusetts Institute of Technology. Plasma Science and Fusion Center Gatu Johnson, Maria Recent experiments on the National Ignition Facility [M. J. Edwards et al., Phys. Plasmas 20, 070501 (2013)] demonstrate that utilizing a near-vacuum hohlraum (low pressure gas-filled) is a viable option for high convergence cryogenic deuterium-tritium (DT) layered capsule implosions. This is made possible by using a dense ablator (high-density carbon), which shortens the drive duration needed to achieve high convergence: a measured 40% higher hohlraum efficiency than typical gas-filled hohlraums, which requires less laser energy going into the hohlraum, and an observed better symmetry control than anticipated by standard hydrodynamics simulations. The first series of near-vacuum hohlraum experiments culminated in a 6.8 ns, 1.2 MJ laser pulse driving a 2-shock, high adiabat (α ~ 3.5) cryogenic DT layered high density carbon capsule. This resulted in one of the best performances so far on the NIF relative to laser energy, with a measured primary neutron yield of 1.8×10[superscript 15] neutrons, with 20% calculated alpha heating at convergence ~27×. 2015-04-30T12:33:44Z 2015-04-30T12:33:44Z 2015-04 2015-01 2015-04-29T22:00:09Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/96849 Berzak Hopkins, L. F., et al. "First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum." Phys. Rev. Lett. 114, 175001 (April 2015). © 2015 American Physical Society en http://dx.doi.org/10.1103/PhysRevLett.114.175001 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Berzak Hopkins, L. F. Meezan, N. B. Le Pape, S. Divol, L. Mackinnon, A. J. Ho, D. D. Hohenberger, M. Jones, O. S. Kyrala, G. A. Milovich, J. L. Pak, A. Ralph, J. E. Ross, J. S. Benedetti, L. R. Biener, J. Bionta, R. Bond, E. Bradley, D. Caggiano, J. Callahan, D. A. Cerjan, C. J. Church, J. Clark, D. Doppner, T. Dylla-Spears, R. Eckart, M. Edgell, D. Field, J. Fittinghoff, D. N. Grim, G. Guler, N. Haan, S. W. Hamza, A. Hartouni, E. P. Hatarik, R. Herrmann, H. W. Hinkel, D. E. Hoover, D. Huang, H. Izumi, N. Khan, S. F. Kozioziemski, B. Kroll, J. Ma, T. MacPhee, A. G. McNaney, J. Merrill, F. E. Moody, J. D. Nikroo, A. Patel, P. Robey, H. F. Rygg, J. R. Sater, J. Sayre, D. Schneider, M. Sepke, S. Stadermann, M. Stoeffl, W. Thomas, C. Town, R. P. J. Volegov, P. L. Wild, C. Wilde, C. Woerner, E. Yeamans, C. Yoxall, B. Kilkenny, J. D. Landen, O. L. Hsing, W. W. Edwards, M. J. Gatu Johnson, Maria First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum |
| title | First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum |
| title_full | First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum |
| title_fullStr | First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum |
| title_full_unstemmed | First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum |
| title_short | First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum |
| title_sort | first high convergence cryogenic implosion in a near vacuum hohlraum |
| url | http://hdl.handle.net/1721.1/96849 |
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