Criticality Benchmarks for COG: A New Point-Wise Monte Carlo Code

COO is a new point-wise Monte Carlo code being developed and tested at LLNL for the Craycomputer. It solves the Boltzmann equation for the transport of neutrons, photons, and (in futureversions) charged particles. Techniques included in the code for modifying the random walk ofparticles make COG most suitable for solving deep-penetration (shielding) problems. However, itspoint-wise cross-sections also make it effective for a wide variety of criticality problems.