Monte carlo simulations for the study of a moderated neutron detector

M. B. Gomez Hornillos, V. Gorlychev, R. Caballero, G. Cortes, A. Poch, C. Pretel, F. Calvino, J. L. Tain, A. Algora, J. Agramunt, D. Cano-Ott, T. Martinez, E. Mendoza, J. Rissanen, J. Aysto, A. Jokinen, T. Eronen, I. Moore, H. Penttila

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This work presents the Monte Carlo simulations performed with the MCNPX and GEANT4 codes for the design of a BEta deLayEd Neutron detector, BELEN-20. This detector will be used for the study of beta delayed neutron emission and consists of a block of polyethylene with dimensions 90 × 90 × 80 cm3 and 20 cylindrical 3He gas counters. The results of these simulations have been validated experimentally with a 252Cf source in the laboratory at UPC, Barcelona. Also the first experiment with this detector has been carried out in November 2009 in JYFL, Finland. In this experiment the neutron emission probability after beta decay of the fission products 88Br, 94,95 Rb, and 138I has been measured; this data is still under analysis. Simulations with MCNPX and GEANT4 have been performed in order to obtain the efficiency of the BELEN-20 detector for each of the above nuclei using the neutron energy distribution corresponding to each nucleus.

Original languageEnglish
Pages (from-to)1573-1576
Number of pages4
JournalJournal of the Korean Physical Society
Issue number23
Publication statusPublished - Aug 1 2011



  • Beta delayed neutron emission
  • GEANT4
  • Monte Carlo simulations
  • Neutron detector

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Gomez Hornillos, M. B., Gorlychev, V., Caballero, R., Cortes, G., Poch, A., Pretel, C., Calvino, F., Tain, J. L., Algora, A., Agramunt, J., Cano-Ott, D., Martinez, T., Mendoza, E., Rissanen, J., Aysto, J., Jokinen, A., Eronen, T., Moore, I., & Penttila, H. (2011). Monte carlo simulations for the study of a moderated neutron detector. Journal of the Korean Physical Society, 59(23), 1573-1576.