CRS: a code to produce multigroup neutron cross sections for reactor physics calculations

The CRS program is a multigroup cross section codo, written in ALGOL for the Burroughs B67O0 com puter. It needs as input the so-called MASTER TAPE containing fine group cross sections and scattering m a t r i c e s, and these data a re in CRS made complete with t h e r m al scattering data and shielded resonance c r o ss sections. Spectrum calculation and condensation to fewer groups may be performed. The program has a number of output options, corresponding to different reactor physics codes in current use at Risø.