Stability and convergence problems of the Monte Carlo fission matrix acceleration methods

• The Monte Carlo fission matrix acceleration methods aim at accelerating the convergence of the fission source in inactive cycles of Monte Carlo criticality calculations. In practice, however, these methods may corrupt the fission source, or slow down its convergence. These phenomena have not been completely understood so far. We demonstrate the convergence problems, and explain their reasons.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Nyckelord

Acceleration method; Convergence problems; Criticality calculations; Fission sources; matrix; MONTE CARLO; Stability and convergence

Physics

Fysik

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