Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (12): 181 doi: 10.1007/s41365-019-0707-y

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Gas-cooled thorium reactor at various fuel loadings and its modification by a plasma source of extra neutrons

Andrey Arzhannikov1 • Sergey Bedenko2 • Vladimir Shmakov3 • Vladimir Knyshev2 • Igor Lutsik2 • Vadim Prikhodko1 • Igor Shamanin2   

  1. 1 Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia 630090
    2 National Research Tomsk Polytechnic University, Tomsk, Russia 634050
    3 Russian Federal Nuclear Center–Zababakhin Institute of Applied Physics, Snezhinsk, Russia 456770
  • Received:2019-05-13 Revised:2019-07-25 Accepted:2019-07-28
  • Contact: Sergey Bedenko
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Andrey Arzhannikov, Sergey Bedenko, Vladimir Shmakov, Vladimir Knyshev, Igor Lutsik, Vadim Prikhodko, Igor Shamanin. Gas-cooled thorium reactor at various fuel loadings and its modification by a plasma source of extra neutrons.Nuclear Science and Techniques, 2019, 30(12): 181     doi: 10.1007/s41365-019-0707-y

Abstract: This work presents the results of computer simulation of neutronic processes in a high-temperature gas-cooled thorium reactor for 30 different options of core loading. To guarantee stable and long-term reactor operation (7–10 years), the quantity of fuel compact dispersion phase and starting fuel composition was selected. It is demonstrated that it is possible in principle to substitute the near-axial recirculation zone of the reactor core by a long magnetic trap with a high-temperature plasma column for generating thermonuclear neutrons. The distribution of neutron yield along the length of the plasma source is also presented. Such a thorium reactor, with a near-axial source of extra neutrons, can be applied for researching thermophysical and neutronic characteristics of dispersion thorium fuel to improve its properties. The results of the work are of great interest from the perspective of future advancement of the thermonuclear power industry, by means of creation of a hybrid installation based on a thorium reactor with a long plasma column as a source of additional neutrons.

Key words: Low-power thorium reactor, Thorium hybrid reactor, Nuclear fuel evolution