Argonne National Laboratory
Reduced Enrichment for Research and Test Reactors
Nuclear Science and Engineering Division at Argonne
U.S. Department of Energy

2007 International RERTR Meeting

Abstracts and Available Papers Presented at the Meeting

Optimization from Core to Experiment - Using Monte Carlo Computer Codes for the Conversion of High Flux Neutron Sources

M. Englert
University of Technology, Hochschulstrasse 4a, D-64289 Darmstadt


The performance of a neutron source is not only dependent on the maximum flux, but is a function of available beam time per year, number and efficiency of neutron guides and instruments and available flux at the experiment. The conversion of research reactors, especially for high flux systems, which are used in neutron research often involves the re-optimization of the whole system to increase the performance and minimize losses. The first and inevitable step of the optimization procedure are simulation calculations of the reactor core. But striving to optimize the performance of the complete system it would be well-advised to expand the calculation beyond the moderator tank to address the experimental devices as well . Today, this is possible with a variety of Monte Carlo codes which track the propagation of neutrons through the neutron guides to the instrument and thus virtually simulate a complete experiment . So far, we have used MATHEMATICA as a tool for our simulation routines addressing the reactor core optimization. Now, we implemented MATHEMATICA also as a linkage routine between MCNPX and the neutron ray-tracing code MCSTAS. This code system is capable of assessing and quantifying changes in performance of a high flux research reactor from core to experiment. It could be useful in overall conversion strategies by making the various trade-offs between neutron flux, neutron quality costs of conversion measures and neutron usage at experiments more transparent.


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Dr. Jordi Roglans-Ribas
Technical Director, RERTR Department
Nuclear Engineering Division 362
Argonne National Laboratory
9700 South Cass Avenue
Argonne, IL 60439
Fax:  +1 630-252-5161

2016 RERTR Meeting

The 2016 International RERTR Meeting (RERTR-2016) will take place in Belgium. Stay tuned for further details.

2015 RERTR Meeting

The 2015 International RERTR Meeting (RERTR-2015) took place in Seoul, Korea on Oct. 11-14, 2015.
For more information visit RERTR-2015.


ARGONNE NATIONAL LABORATORY, Nuclear Engineering Division, RERTR Department
9700 South Cass Ave., Argonne, IL 60439-4814
A U.S. Department of Energy laboratory managed by UChicago Argonne, LLC

Last modified on July 29, 2008 16:01 +0200