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Reactivity studies on the final preconceptual reference design of the Advanced Neutron Source

Technical Report ·
DOI:https://doi.org/10.2172/6991839· OSTI ID:6991839
An Advanced Neutron Source (ANS) with a peak thermal neutron flux of 8.0 {minus} 9.0 {times} 10{sup 19} m{sup {minus}2}s{sup {minus}1} is being designed for condensed matter physics, materials science, isotope production, and fundamental physics research. A final preconceptual reference reactor design has been selected in order to examine the safety, performance, and costs associated with this one design. This report presents reactor physics analyses of safety aspects of the reference reactor design that are related to core reactivity changes. These analyses include control rod worth, shutdown rod worth, heavy water voiding, light water ingress, single fuel element criticality, fuel element movement, and neutron beam tube flooding. The positive and negative findings are explored for each of these analyses. Based on these analyses, some design modifications that further improve the reactor safety are identified and recommended. 12 refs., 4 figs., 16 tabs.
Research Organization:
EG and G Idaho, Inc., Idaho Falls, ID (USA)
Sponsoring Organization:
DOE/NE
DOE Contract Number:
AC07-76ID01570
OSTI ID:
6991839
Report Number(s):
EGG-NE-8940; ON: DE90013098
Country of Publication:
United States
Language:
English