Common misconceptions in Monte Carlo particle transport

Monte Carlo particle transport is often introduced primarily as a method to solve linear integral equations such as the Boltzmann transport equation. This paper discusses some common misconceptions about Monte Carlo methods that are often associated with an equation-based focus. Many of the misconceptions apply directly to standard Monte Carlo codes such as MCNP and some are worth noting so that one does not unnecessarily restrict future methods.

► Adjoint variety and use from a Monte Carlo perspective. ► Misconceptions and preconceived notions about statistical weight. ► Reasons that an adjoint based weight window sometimes works well or does not. ► Pulse height/probability of initiation tallies and “the” transport equation. ► Highlights unnecessary preconceived notions about Monte Carlo transport.