FW/CADIS-$\Omega$: An angle-informed hybrid method for deep-penetration radiation transport
Abstract
A new method for generating variance reduction parameters for strongly anisotropic, deep-penetration radiation shielding studies is presented. This method generates an alternate form of the adjoint scalar flux quantity, , which is used by both CADIS and FW-CADIS to generate variance reduction parameters for local and global response functions, respectively. The new method, called CADIS-, was implemented in the Denovo/ADVANTG software suite, and results are presented for a concrete labyrinth test problem. Results indicate that the flux generated by CADIS- incorporates localized angular anisotropies in the flux effectively. CADIS- outperformed CADIS in the test problem while obtaining accurate results. This initial work indicates that CADIS- may be highly useful for shielding problems with strong angular anisotropies. A future test plan to fully characterize the new method is proposed, which should reveal more about the types of realistic problems for which the CADIS- will be suited.
Keywords
Cite
@article{arxiv.1612.00793,
title = {FW/CADIS-$\Omega$: An angle-informed hybrid method for deep-penetration radiation transport},
author = {Madicken Munk and R. N. Slaybaugh and Tara M. Pandya and Seth R. Johnson and T. M. Evans},
journal= {arXiv preprint arXiv:1612.00793},
year = {2016}
}