A Monte Carlo Method for Calculating Initiation Probability
A Monte Carlo method for calculating the probability of initiating a self-sustaining neutron chain reaction has been developed. In contrast to deterministic codes which solve a non-linear, adjoint form of the Boltzmann equation to calculate initiation probability, this new method solves the forward (standard) form of the equation using a modified source calculation technique. Results from this new method are compared with results obtained from several deterministic codes for a suite of historical test problems. The level of agreement between these code predictions is quite good, considering the use of different numerical techniques and nuclear data. A set of modifications to the historical test problems has also been developed which reduces the impact of neutron source ambiguities on the calculated probabilities.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 908387
- Report Number(s):
- UCRL-PROC-228717; TRN: US0703687
- Resource Relation:
- Conference: Presented at: Joint International Topical Meeting on Mathematics & Computation and Supercomputing in Nuclear Applications, Monterey, CA, United States, Apr 16 - Apr 19, 2007
- Country of Publication:
- United States
- Language:
- English
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