EFFICIENT BETA GAMMA MONTE-CARLO TRANSPORT IN REPETITIVE STRUCTURES/

Algorithms are developed that permit the use of periodic and albedo bo undary conditions in the ITS system of coupled electron/photon Monte C arlo transport codes when simulating transport in repetitive structure s in satellite systems. Mutual verification is provided through the ap plication of both algorithms to a simplified periodic geometry based o n an array of microelectronics cards. The albedo algorithm is then emp loyed to benchmark the predictions of energy deposition in silicon by a mass sectoring code for this same application and to predict the shi elding effectiveness of a hexagonal honeycomb structure. Use of these algorithms results in a major reduction in the required problem input and significant variance reduction that could otherwise be achieved on ly via postprocessing that is much more problem dependent.