MEASUREMENT OF THE FREQUENCY RESPONSE OF THE IRT-1000 TYPE REACTOR BY MEANS OF THE OSCILLATOR METHOD

Journal Article · Tue Oct 01 00:00:00 EDT 1963 · At. Energy. (USSR)

OSTI ID:4122585

Konstantinov, L V; Efanov, A I; Postnikov, V V

Analysis of the reactor noise for determining the frequency response presents computational difficulties; therefore, an oscillator method was developed which allows the frequency response of the IRT-1000 type reactor to be measured in the frequency range from 0.3 to 60 hertz by means of a device without electronic components. The measurements involved the determination of the amplitude and the phase of the reactor power oscillaiions on the basis of the sinusoidal variations of the reactivity. The reactivity oscillator, placed in the reactor reflector, consisted of 5 Cd shutters, rotation of which caused a sinusoidal chandge in the absorbing surface, with similar variat ions of the reactivity. The high sensitivity of the galvandometer made amplificat ion of the signal unnecessary. The measurements were carried out at a reactor power of 1500 kw and reactivity oscillations of delta k/sub o/ = 4 x 10/sup -1/. The obtained amplitude frequency response of (7.3 plus or minus 0.3) x 10/sup -6/ sec agreed within the limits of the experimental error with the calculated value of 7 x 10/ sup -6/ sec. The phase-frequency response differed from the theoretical values at frequencies beyond 10 hertz. The difference is probably due to the presence of the reflector in the reactor. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-18-004855
• OSTI ID: 4122585
• Journal Information: At. Energy. (USSR), Journal Name: At. Energy. (USSR) Vol. Vol: 15
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ADSORPTION
CADMIUM
CONFIGURATION
ELECTRIC METERS
EQUATIONS
ERRORS
FREQUENCY
GALVANOMETERS
INSTRUMENTS
IRT-SOFIA
MACHINE PARTS
MEASURED VALUES
NEUTRON FLUX
NUMERICALS
REACTIVITY
REACTOR CORE
REACTOR NOISE
REACTOR OSCILLATORS
REACTOR TECHNOLOGY
REFLECTORS
RESEARCH REACTORS
ROTATION
SENSITIVITY
SERVOMECHANISMS
SIGNALS
SURFACES
TRANSFER FUNCTIONS
VARIATIONS