Engineering topics
Long, Alex Roberts
Publications and source records attributed to Long, Alex Roberts.
Implicit Monte Carlo at LANL-Progress and Challenges
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Monte Carlo Transport Computational Summit-Kickoff
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A preliminary exploration of using mixture density networks for data compression in Monte Carlo codes [Slides]
The thermal radiative transfer equations (TRT) model many important phenomena of interest at LANL. The TRT equations model time-dependent thermal radiation through a medium, i.e., how thermal radiation loses energy by absorption, gains energy via emission processes, and redistributes energy via scattering.
LANL Code Teams' Outbriefs from El Cap Hackathon [Slides]
Abstract not provided.
A novel MC TRT method: vectorizable variance reduction for the energy spectra
Data produced up to now gives us confidence that we will continue to see variance reduction behavior at amenable runtimes as we move this test bed forward. This method has characteristics of event and history based Monte Carlo transport, without the bulky modifications required by event based Monte Carlo while avoiding some overhead.
Jayenne Physics Manual, Revision 1.0 - An Implicit Monte Carlo Code for Thermal Radiative Transfer
This physics manual is intended to document all of the methods used in version 8 of the Jayenne Implicit Monte Carlo solver library. The goal of this manual is to provide a general overview of the basic methods used, and provide a list of references that detail methods that have been implemented in to the Jayenne library.
An Overview of the Implicit Monte Carlo Algorithm [Slides]
Abstract not provided.
LANSCE Pulse
For more than four decades, the United States has relied on the Los Alamos Neutron Science Center (LANSCE) accelerator to deliver high-energy, high-power proton beams in support of national security science. Today the LANSCE facility is a center for materials and nuclear research supporting National Nuclear Security Administration (NNSA) and Department of Energy (DOE) missions.