Determination of heat generation in double layer shields

In this paper theoretical and experimental calculation of direct heat gener ation from the penetration of 6.12 MeV photons energy, emitted from an N-16 disk source, through double shielding layers combined of concrete, steel a nd lead shields is described. This work is a continuation of the work repor ted by Bakes (Bakos G.C., 1999. Ann. Nucl. Energy 26, 69-73) and is based o n the analysis of experimentally determined photon Aux spectra and the use of build up factor method. (C) 1999 Elsevier Science Ltd. Ali rights reserv ed.