Abstract:
Simple analytical formulas for prompt estimation
of the yield and angular distribution of neutrons for calculating
the biological shielding of heavy ion accelerators with energies
from 1 to 6 MeV/u are presented. The results of calculation are
compared with those obtained with the help of the programs
LIZE++ and FLUKA as well as with the experimental data
available in literature. On the basis of the comparison it can
be said that the proposed method can be applied for prompt
estimation of the required biological shielding for heavy ion
accelerators with energies from 1 to 6 MeV/u that are being
constructed or reconstructed. The deviation of the results of such
calculations from more precise ones does not exceed a factor of 2,
which is comparable with deviations in calculation of biological
shielding due to some variety in the spectra of the produced
neutrons and variations in protective properties of the materials
used as well as in their thickness.
