Anisn-L, a Cdc-7600Code Which Solves the One-Dimensional,Multigroup,Time Dependent Transport Equation by the Method of Discrete Ordinates.

摘要

The code ANISN-L solves the one-dimensional,multigroup,time-independent Boltzmann transport equation by the method of discrete ordinates. In problems involving a fissionable system,it can calculate the system multiplication or alpha. In such cases,it is also capable of determining isotopic concentrations,radii,zone widths,or buckling in order to achieve a given multiplication or alpha. The code may also calculate fluxes caused by a specified fixed source. Neutron,gamma,and coupled neutron--gamma problems may be solved in either the forward or adjoint (backward) modes. Cross sections describing upscatter,as well as the usual downscatter,may be employed. This report describes the use of ANISN-L;this is a revised version of ANISN which handles both large and small problems efficiently on CDC-7600computers. (ERA citation 01:021853)