Based on the modified Synder geometry and the material data given by ICRU-46

we have calculated

using Monte Carlo method

the depth dose curves of the head phantom of BNCT. The calculation is performed using individual monoenergetic and monodirectional beams of 0.0253eV

1keV

2keV

10keV

100keV and 1MeV neutrons

and 0.2

0.5

1

2

5 and 10 MeV photons. And a generic epithermal neutron beam with 1% fast neutron (10keV -2MeV) contamination and 10% thermal neutron (ImeV - 0.5eV) contamination is also employed. The results show an agreement accordance with the relative reference

which verify our treatment programming software ofBNCT.