RESULTS OF THE S2DR REACTOR NOISE EXPERIMENT

Technical Report · Fri Aug 18 04:00:00 EDT 1961

OSTI ID:4787239

Randall, R L

S>The value of ( BETA /1*) (the ratio of BETA effective to the average prompt neutron lifetime) for the S2DR was determined from measurements of the power spectral density of reactor noise signals which were obtained from an in- core BF/sub 3/ pulse chamber and a fast count rate circuit. A computed least squares'' fit to the power spectral density data indicated ( BETA /1*) to be 1277 plus or minus i 150 sec/sup -1/. This compares favorably with the calculated value of 1275 sec/sup -1/. This experiment demonstrated that a pulse chamber and a fast count rate circuit make possible the precision measurement of the high frequency reactor noise components which are present in small metal reactors. The addition of an FM tape recording system and modifications in the existing wave snalyzer system will extend the applications snd improve the precision of future reactor noise messurements. (auth)

• Research Organization: Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.
• DOE Contract Number: AT(11-1)-GEN-8
• NSA Number: NSA-16-012745
• OSTI ID: 4787239
• Report Number(s): NAA-SR-Memo-6662
• Country of Publication: United States
• Language: English

Related Subjects

BORON FLUORIDES
CIRCUITS
COUNTERS
DELAYED NEUTRONS
EFFICIENCY
ELECTRONIC EQUIPMENT
EQUATIONS
ERRORS
FREQUENCY
LIFETIME
MEASURED VALUES
NEUTRON DETECTION
NEUTRON FLUX
NUMERICALS
POWER PLANTS
PROMPT NEUTRONS
PULSES
REACTIVITY
REACTOR CORE
REACTOR NOISE
REACTOR TECHNOLOGY
RECORDING SYSTEMS
SIGNALS
SPECTRA
STATISTICS
VARIATIONS