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A zero-variance-based scheme for variance reduction in Monte Carlo criticality
| Content Provider | Semantic Scholar |
|---|---|
| Author | Christoforou, Stavros Hoogenboom, J. E. |
| Copyright Year | 2006 |
| Abstract | A zero-variance scheme is derived and proven theoretically for criticality cases, and a simplified transport model is used for numerical demonstration. It is shown in practice that by appropriate biasing of the transition and collision kernels, a significant reduction in variance can be achieved. This is done using the adjoint forms of the emission and collision densities, obtained from a deterministic calculation, according to the zero-variance scheme. By using an appropriate algorithm, the figure of merit of the simulation increases by up to a factor of 50, with the possibility of an even larger improvement. In addition, it is shown that the biasing speeds up the convergence of the initial source distribution. (authors) |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://mathematicsandcomputation.cowhosting.net/PHYSOR-2006/B094.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
