ADVANTG An Automated Variance Reduction Parameter Generator

Technical Report · Fri Nov 01 04:00:00 EDT 2013

DOI:https://doi.org/10.2172/1105937· OSTI ID:1105937

Mosher, Scott W. ^[1]; Bevill, Aaron M. ^[1]; Johnson, Seth R. ^[1]; Ibrahim, Ahmad M. ^[1]; Daily, Charles R. ^[1]; Evans, Thomas M. ^[1]; Wagner, John C. ^[1]; Johnson, Jeffrey O. ^[1]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

The AutomateD VAriaNce reducTion Generator (ADVANTG) software automates the generation of variance reduction (VR) parameters for continuous-energy Monte Carlo simulations of fixed-source neutron, photon, and coupled neutron-photon transport problems using MCNP5 (X-5 Monte Carlo Team 2003). ADVANTG generates space- and energy dependent mesh-based weight-window bounds and biased source distributions from three dimensional (3-D) discrete ordinates (SN) calculations that are performed by the Denovo package (Evans et al. 2010). The deterministic calculations can be performed using multiple cores and/or processors (e.g., on multi-core desktop systems and clusters). The final variance reduction parameters are output in a format that can be used with unmodified versions of MCNP. The primary objective of the development of ADVANTG has been to reduce both the user effort and the computational time required to obtain accurate and precise tally estimates across a broad range of challenging transport application areas.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1105937
• Report Number(s): ORNL/TM--2013/416; NN2001000; NNPORES
• Country of Publication: United States
• Language: English

Related Subjects

ADVANTG
Hybrid Monte Carlo