Year: 2018
Type: article
Abstract: Nuclear Data Format and the Generalized Nuclear Data Structure format (GNDS), a new international standard for storing nuclear data developed under the auspices of the Nuclear Energy Agency Working Party on Evaluation Cooperation Subgroup 38.GNDS relies on modern coding practices, and offers a structured, flexible and physicsbased standard for storing and exchanging nuclear data to address limitations in legacy nuclear data formats such as ENDF-6.GNDS supports the storage of evaluated nuclear data as well as processed data suitable for both deterministic (i.e., multi-group) and Monte Carlo transport codes.Lawrence Livermore National Laboratory has implemented a complete suite of codes to test GNDS data.Simulations for the ENDF/B-VIII.0cross-section library in GNDS format are presented.Deterministic and Monte Carlo radiation transport simulations with the Ardra and Mercury codes respectively, are validated against reactivities in fast criticality safety benchmark assemblies.Finally, Mercury simulations of 238 U(n,f), 237 Np(n,f) and 239 Pu(n,f) reaction rates in Godiva, Jezebel and Flattop are compared to MCNP results and measured data.
Authors: Marie-Anne Descalle, Bret Beck, Caleb Mattoon, Eric Jurgenson, Scott A. McKinley, T. E. Bailey, Bujar Tagani
Institution: Lawrence Livermore National Laboratory
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3207799194