Neutron cross-talk in a multi-detector system

J. Wang, A. Galonsky, J. J. Kruse, P. D. Zecher, F. Deák, Á Horváth, Á Kiss, Z. Seres, K. Ieki, Y. Iwata

Research output: Contribution to journalArticle

27 Citations (Scopus)


Two 2 m X 2 m "walls" were built for experiments with two neutrons in the final state. Each wall consists of 25 rectangular cells filled with NE-213 liquid scintillator. The close-packed design of the array makes cross-talk an inevitable contributor to distortion of measurements with this system. For En ≤ 25 MeV almost all the detection efficiency comes from n-p scattering, and the simple two-body kinematics can be used as the basis for identifying cross-talk events. A Monte-Carlo code was developed to simulate the detection process. We found that most cross-talk events could be distinguished from real two-neutron events. A test experiment for comparison with the code was performed with neutrons from the 7Li(p, n)7Be reaction at Ep = 30 MeV. With this reaction all two-detector coincidences are cross-talk events. Consistency between the experimental data and the simulation results was obtained.

Original languageEnglish
Pages (from-to)380-390
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
Publication statusPublished - Oct 1 1997


  • Cross talk
  • Neutron detection
  • Neutrons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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