Benchmarking a diffusion code for a cylindrical-core reactor

The distorted-buckling method, proposed by us previously, allows the benchmarking of a di€usion code by comparing it with an analytic model in either 2 or 3 dimensions. Here, the method is applied to the case of a cylindrical TRIGA-type reactor to compare thefluxes pre- dicted by an analytic model of the core and re¯ector, to those predicted by the code CITA- TION. The match is everywhere excellent.