Determination of delayed neutrons source in the frequency domain based on in-pile oscillation measurements

Conference · Sat Jul 01 00:00:00 EDT 2006

OSTI ID:22039764

Yedvab, Y ^[1]; Reiss, I ^[1]; Bettan, M ^[2]; Harari, R; Grober, A; Ettedgui, H; Caspi, E N ^[1]

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1. Nuclear Research Centre - Negev, P O Box 9001, 84190 Beer-Sheva (Israel)
2. Soreq Nuclear Research Centre, 81800 Yavne (Israel)

A method for determining delayed neutrons source in the frequency domain based on measuring power oscillations in a non-critical reactor is presented. This method is unique in the sense that the delayed neutrons source is derived from the dynamic behavior of the reactor, which serves as the measurement system. An algorithm for analyzing power oscillation measurements was formulated, which avoids the need for a multi-parameter non-linear fit process used by other methods. Using this algorithm results of two sets of measurements performed in IRR-I and IRR-II (Israeli Research Reactors I and II) are presented. The agreement between measured values from both reactors and calculated values based on Keepin (and JENDL-3.3) group parameters is very good. (authors)

• Research Organization: American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
• OSTI ID: 22039764
• Resource Relation: Conference: PHYSOR-2006: American Nuclear Society's Topical Meeting on Reactor Physics - Advances in Nuclear Analysis and Simulation, Vancouver, BC (Canada), 10-14 Sep 2006; Other Information: Country of input: France; 19 refs.
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICAL METHODS AND COMPUTING
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
ALGORITHMS
DELAYED NEUTRONS
GROUP CONSTANTS
IRR-1 REACTOR
IRR-2 REACTOR
NEUTRON SOURCES
NONLINEAR PROBLEMS
OSCILLATIONS
REACTOR KINETICS
REACTOR PERIOD