Combined pulsed method of measuring high reactivities for reactors with reflectors

Stumbur, A.; Shokod'ko, A. G.; Zhuravlev, V. I.; Matveenko, I. P.; Milyutina, Z.N.

doi:10.1007/bf01223165

Cited by 2 publications

(1 citation statement)

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“…Moreover can be directly measured [9,10] by injecting a short burst of neutrons in the system, called the pulsed-neutron-source (PNS) experiment. Since Simmons and King [9] applied an exponential regression to neutron detector signals from the PNS experiment, this measurement method has been popularly employed because it can provide results independent of the positioning and energy characteristics of the detector and neutron source [9,11,12] by reducing higher-mode contaminations on the exponential fitting [13,14].…”

Section: Introductionmentioning

confidence: 99%

Determination of an Effective Detector Position for Pulsed-Neutron-Source Alpha Measurement by Time-Dependent Monte Carlo Neutron Transport Simulations

Jang

Shim

2018

Science and Technology of Nuclear Installations

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A simple method using the time-dependent Monte Carlo (TDMC) neutron transport calculation is presented to determine an effective detector position for the prompt neutron decay constant (α) measurement through the pulsed-neutron-source (PNS) experiment. In the proposed method, the optimum detector position is searched by comparing amplitudes of detector signals at different positions when their α estimates by the slope fitting are converged. The developed method is applied to the Pb-Bi-zoned ADS experimental benchmark at Kyoto University Critical Assembly. The α convergence time estimated by the TDMC PNS simulation agrees well with the experimental results. The α convergence time map and the corresponding signal amplitude map predicted by the developed method show that polyethylene moderator regions adjacent to fuel region are better positions than other candidates for the PNS α measurement.

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Section: Introductionmentioning

confidence: 99%

Determination of an Effective Detector Position for Pulsed-Neutron-Source Alpha Measurement by Time-Dependent Monte Carlo Neutron Transport Simulations

Jang

Shim

2018

Science and Technology of Nuclear Installations

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Subcriticality Determination of Low-Enriched UO₂Lattices in Water by Exponential Experiment

Suzaki

1991

Journal of Nuclear Science and Technology

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Combined pulsed method of measuring high reactivities for reactors with reflectors

Cited by 2 publications

References 3 publications

Determination of an Effective Detector Position for Pulsed-Neutron-Source Alpha Measurement by Time-Dependent Monte Carlo Neutron Transport Simulations

Determination of an Effective Detector Position for Pulsed-Neutron-Source Alpha Measurement by Time-Dependent Monte Carlo Neutron Transport Simulations

Subcriticality Determination of Low-Enriched UO₂Lattices in Water by Exponential Experiment

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Combined pulsed method of measuring high reactivities for reactors with reflectors

Cited by 2 publications

References 3 publications

Determination of an Effective Detector Position for Pulsed-Neutron-Source Alpha Measurement by Time-Dependent Monte Carlo Neutron Transport Simulations

Determination of an Effective Detector Position for Pulsed-Neutron-Source Alpha Measurement by Time-Dependent Monte Carlo Neutron Transport Simulations

Subcriticality Determination of Low-Enriched UO2Lattices in Water by Exponential Experiment

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Subcriticality Determination of Low-Enriched UO₂Lattices in Water by Exponential Experiment