CASMO-5 is the latest code version in the Studsvik Scandpower series of lattice physics codes for general LWR analysis and has capabilities, features and numerical models not previously available in CASMO-4. Among the new capabilities of CASMO-5 are a “quadratic gadolinium depletion model” and the ability to perform 2D transport calculations in hundreds of energy groups. This paper briefly describes CASMO-5 capabilities and the role of CASMO-5 in generating cross section and discontinuity factor data for SIMULATE-4. This paper also describes the new CASMO-5 data libraries (586 group neutron and 18 group gamma), and details recent work to validate CASMO-5 2D transport calculations for several simple criticals.
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