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Estimation of fission source bias in Monte Carlo eigenvalue calculations

Conference · · Transactions of the American Nuclear Society; (United States)
OSTI ID:6844680
;  [1];  [2]
  1. Argonne National Laboratory, IL (United States)
  2. Mississippi State Univ., Mississippi State, MS (United States)
Monte Carlo eigenvalue calculations using a fixed number of histories per generation are biased. Previous work has shown that the bias in eigenvalue is generally smaller than observed standard deviations. In this paper, the authors propose a method for bounding [delta][psi] the bias in the unnormalized fission source. In addition, the authors construct a plausibility argument suggesting that the bias is generally insignificant. Results presented are for discretized diffusion calculations based on a Monte Carlo-generated source. Additional calculations have been run for true transport problems using a very fast, but more conventional, Monte Carlo code.
OSTI ID:
6844680
Report Number(s):
CONF-931160--
Conference Information:
Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 69
Country of Publication:
United States
Language:
English

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