LA-12312-MS (July 1992)

TRANSX 2: A Code for Interfacing MATXS Cross-Section Libraries to Nuclear Transport Codes

R. E. MacFarlane, Los Alamos National Laboratory

TRANSX 2.0 is a computer code that reads nuclear data from a library in MATXS format and produces transport tables compatible with many discrete-ordinates (SN) and diffusion codes. Tables can be produced for neutron, photon, charged-particle, or coupled transport. Options include adjoint tables, mixtures, homogeneous or heterogeneous self-shielding, group collapse, homogenization, thermal upscatter, prompt or steady-state fission, transport corrections, elastic removal corrections, and flexible response function edits. This report describes version 2.0 of TRANSX, which was prepared in January of 1992, except some notes pertaining to TRANSX 2.15 have been added.

There is an alternate entry to this report organized as a hypertext help package for TRANSX users.

Table of Contents

ACKNOWLEDGMENTS

The author would like to thank the TRANSX users who have helped to find and fix problems in the code over the years since its introduction. More recently Denise George has made significant contributions to TRANSX and did much of the rewrite of BBC.

T-2 Nuclear Information Service

6 January 1995
ryxm@lanl.gov