Fast ignition integrated experiments and high-gain point design

Shiraga, H.; Nagatomo, H.; Theobald, W.; Solodov, A. A.; Tabak, M.

doi:10.1088/0029-5515/54/5/054005

Fast ignition integrated experiments and high-gain point design

Journal Article · Thu Apr 17 04:00:00 EDT 2014 · Nuclear Fusion

DOI:https://doi.org/10.1088/0029-5515/54/5/054005· OSTI ID:1226195

Shiraga, H. ^[1]; Nagatomo, H. ^[1]; Theobald, W. ^[2]; Solodov, A. A. ^[2]; Tabak, M. ^[3]

Osaka Univ., Osaka (Japan)
Univ. of Rochester, Rochester, NY (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Here, integrated fast ignition experiments were performed at ILE, Osaka, and LLE, Rochester, in which a nanosecond driver laser implodes a deuterated plastic shell in front of the tip of a hollow metal cone and an intense ultrashort-pulse laser is injected through the cone to heat the compressed plasma. Based on the initial successful results of fast electron heating of cone-in-shell targets, large-energy short-pulse laser beam lines were constructed and became operational: OMEGA-EP at Rochester and LFEX at Osaka. Neutron enhancement due to heating with a ~kJ short-pulse laser has been demonstrated in the integrated experiments at Osaka and Rochester. The neutron yields are being analyzed by comparing the experimental results with simulations. Details of the fast electron beam transport and the electron energy deposition in the imploded fuel plasma are complicated and further studies are imperative. The hydrodynamics of the implosion was studied including the interaction of the imploded core plasma with the cone tip. Theory and simulation studies are presented on the hydrodynamics of a high-gain target for a fast ignition point design.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-07NA27344

OSTI ID:: 1226195

Report Number(s):: LLNL-JRNL--630232

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 5 Vol. 54; ISSN 0029-5515

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

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