GTR THIN REFLECTOR EXPERIMENT

Technical Report · Mon Jul 20 04:00:00 EDT 1959

OSTI ID:4209148

Jordan, E L

BS>A series of experiments was made with the Ground Test Reactor (GTR) to determine an optimum reflector thickness for one reactor face which would make available a substantial increase in leakage flux without an excessive loss in reaetivity. With a water reflector of two inches, neutron and gamma leakage fluxes were increased by a factor of 2.3 and 1.4 over the fluxes with an infinite reflector, while the loss in reactivity was 0.2%, within the safety limit set up for these experiments. Slabs of beryllium or lead (simulating test panels) were placed opposite the front face of the core, to determine the effect on the core reactivity of test panels with thermal-neutron reflector characteristics or fast- neutron backscatter propenties. With the two-inch water reflector, the effect was to increase the level of reactivity to that of an infinite-reflector configuration. (auth)

• Research Organization: Convair, Fort Worth, Tex.
• NSA Number: NSA-13-019734
• OSTI ID: 4209148
• Report Number(s): NARF-59-25T; MR-N-236; Project 6(1-9964)
• Country of Publication: United States
• Language: English

Related Subjects

BERYLLIUM-- GTR-- LEAD-- MOCKUP-- PLATES-- POWER PLANTS-- REACTORS
GTR-- LEAKAGE-- POWER PLANTS-- QUANTITATIVE ANALYSIS-- REACTORS-- REFLECTORS-- THICKNESS-- WATER
GTR-- LOSSES-- NEUTRON FLUX-- POWER PLANTS-- REACTIVITY-- REACTORS
REACTORS