Modelling of the neutron production in a mixed beam DT neutron generator

Aljaž Čufar, Paola Batistoni, Zamir Ghani, Luca Giacomelli, Igor Lengar, Stefano Loreti, Alberto Milocco, Sergey Popovichev, Mario Pillon, Davide Rigamonti, Marica Rebai, Marco Tardocchi, Luka Snoj

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Abstract

Compact DT neutron generators based on accelerators are often built on the principle of a mixed beam operation, meaning that deuterium (D) and tritium (T) are both present in the ion beam and in the target. Moreover, the beam consists of a mixture of ions and ionized molecules (D, T ions, and ionized D-D, T-T and D-T molecules) so the relevant source components come from T(d, n), D(t, n), D(d, n) and T(t, 2n) reactions at different ion energies. The method for assessing the relative amplitudes of different source components (DD, DT, TT) is presented. The assessment relies on the measurement of the neutron spectrum of different DT components (T(d, n) and D(t, n) at different energies) using a high resolution neutron spectrometer, e.g. a diamond detector, fusion reaction cross-sections, and simulations of neutron generation in the target. Through this process a complete description of the neutron source properties of the mixed beam neutron generator can be made and a neutron source description card, in a format suitable for Monte Carlo code MCNP, produced.
Original languageEnglish
Pages (from-to)-
JournalFusion Engineering and Design
DOIs
Publication statusAccepted/In press - 2018
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Čufar, A., Batistoni, P., Ghani, Z., Giacomelli, L., Lengar, I., Loreti, S., Milocco, A., Popovichev, S., Pillon, M., Rigamonti, D., Rebai, M., Tardocchi, M., & Snoj, L. (Accepted/In press). Modelling of the neutron production in a mixed beam DT neutron generator. Fusion Engineering and Design, -. https://doi.org/10.1016/j.fusengdes.2018.04.075