Combining four Monte Carlo estimators for radiation momentum deposition
- Los Alamos National Laboratory
- NON LANL
Using four distinct Monte Carlo estimators for momentum deposition - analog, absorption, collision, and track-length estimators - we compute a combined estimator. In the wide range of problems tested, the combined estimator always has a figure of merit (FOM) equal to or better than the other estimators. In some instances the gain in FOM is only a few percent higher than the FOM of the best solo estimator, the track-length estimator, while in one instance it is better by a factor of 2.5. Over the majority of configurations, the combined estimator's FOM is 10-20% greater than any of the solo estimators FOM. In addition, the numerical results show that the track-length estimator is the most important term in computing the combined estimator, followed far behind by the analog estimator. The absorption and collision estimators make negligible contributions.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1040841
- Report Number(s):
- LA-UR-10-07762; LA-UR-10-7762; TRN: US201211%%210
- Resource Relation:
- Conference: Int'l Conf on Math & Comp Methods Applied to Nuc. Sci. & Eng. ; May 8, 2011 ; Rio de Janeiro, Brazil
- Country of Publication:
- United States
- Language:
- English
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