Methodic aspects of experimental investigation of optimality of heterogeneous shields

On the basis of the effective neutron and gamma radiation attenuation constants and the concept of efficiency function the possibility to apply the experimental variational method for optimization of multy-layered biological shields is proved. The dependence of the flux functional and the efficiency function on the interface coordinates is derived. The practical application of the method for analyzing both two- and multy-layered specific shields with and without account for the neutron-induced secondary gamma radiation is discussed. It is concluded that the method proposed provides one with a useful fool for transferring the results of simulating experiments on designed physical facilities