Attainable Burnup in a LIFE Engine Loaded with Depleted Uranium

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The Laser Inertial Fusion-based Energy (LIFE) system uses a laser-based fusion source for electricity production. The (D,T) reaction, beside a pure fusion system, allows the option to drive a sub-critical fission blanket in order to increase the total energy gain. In a typical fusion-fission LIFE engine the fission blanket is a spherical shell around the fusion source, preceded by a beryllium shell for neutron multiplications by means of (n,2n) reactions. The fuel is in the form of TRISO particles dispersed in carbon pebbles, cooled by flibe. The optimal design features 80 cm thick blanket, 16 cm multiplier, and 20% TRISO ... continued below

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Fratoni, M; Kramer, K J & Latkowski, J F November 30, 2009.

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The Laser Inertial Fusion-based Energy (LIFE) system uses a laser-based fusion source for electricity production. The (D,T) reaction, beside a pure fusion system, allows the option to drive a sub-critical fission blanket in order to increase the total energy gain. In a typical fusion-fission LIFE engine the fission blanket is a spherical shell around the fusion source, preceded by a beryllium shell for neutron multiplications by means of (n,2n) reactions. The fuel is in the form of TRISO particles dispersed in carbon pebbles, cooled by flibe. The optimal design features 80 cm thick blanket, 16 cm multiplier, and 20% TRISO packing factor. A blanket loaded with depleted uranium and depleted in a single batch with continuous mixing can achieve burnup as high as {approx}85% FIMA while generating 2,000 MW of total thermal power and producing enough tritium to be used for fusion. A multi-segment blanket with a central promotion shuffling scheme enhances burnup to {approx}90% FIMA, whereas a blanket that is operated with continuous refueling achieves only 82% FIMA under the same constraints of thermal power and tritium self-sufficiency. Both, multi-segment and continuous refueling eliminate the need for a fissile breeding phase.

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PDF-file: 12 pages; size: 1.6 Mbytes

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  • Presented at: PHYSOR 2010 Advances in Reactor Physics to Power the Nuclear Renaissance, Pittsburgh, PA, United States, May 09 - May 14, 2010

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  • Report No.: LLNL-CONF-421077
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 986612
  • Archival Resource Key: ark:/67531/metadc1014673

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 30, 2009

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 27, 2017, 5:32 p.m.

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Fratoni, M; Kramer, K J & Latkowski, J F. Attainable Burnup in a LIFE Engine Loaded with Depleted Uranium, article, November 30, 2009; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc1014673/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.