MCNPX calculation and the neutron multiplicity for beryllium reflected targets up to 4 GeV protons

الملخص EN

The calculation of neutron multiplicity for (p,n) reactions are very important and necessary for designing and manufacturing the target for an Accelerator Driven System (ADS).

In this paper, calculations were made for the neutron residual nuclei and neutron multiplicity in (p,n) reactions for some thick target nuclei including lead Pb, lead bismuth eutectic Pb+ Bi (volume ratio being 45:55) and Tungsten (W) using MCNPX.

The effect of adding a Beryllium layer at the downstream end of the block is studied.

The proton beam energy extended from 0.4 up to 4.0 GeV.