A MONTE CARLO STUDY OF THE NEUTRON REGISTRATION EFFICIENCY OF A MULTICHANNEL NE213 DETECTION SYSTEM

A. Bertin1, M. Bruschi1, V. M. Bystritsky2, M. Capponi1, B. Cereda1, S. De Castro1, A. Ferretti1, D. Galli1, B. Giacobbe1, U. Marconi1, I. Massa1, C. Moroni1, M. Piccinini1, M, Poli1, N. Semprini-Cesari1, R. Spighi1, S. Vecchi1, A. Vezzani1, M. Villa1, V. Vitale1, J. WoŸniak3, G. Zavattini1 and A. Zoccoli1

1 Dipart. di Fisica Dell'univ. di Bologna and Infn, Sez. Di Bologna, Bologna, Italy,
2 Joint Institute for Nuclear Research, Dubna, Russia,
3 Faculty of Physics and Nuclear Techniques, Univ. of Mining and Metallurgy, Cracow, Poland


The Monte Carlo calculations of the registration efficiency of a four-channel NE213 detector for 2.5 MeV neutrons are reported. The dependence of the efficiency on registration threshold as well as the influence of different substances placed between the neutron source and the scintillators on the efficiency value are also shown.