Precise Control of Neutron Irradiation Fluence in the Neutron Transmutation Doping Process at HANARO Using SPND and Zirconium Foils

Kim, Myong-Seop; Kang, Gi-Doo

doi:10.1109/tns.2016.2556718

Cited by 1 publication

(1 citation statement)

References 6 publications

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“…In its simplest form, the detector operates on the basis of directly measuring the beta decay current following neutron capture [1]. Because the SPND doesn't need to use the external bias supply applied to the detector, it is used not only for a typical neutron detector in the nuclear power plants but also for real-time neuron flux monitoring in the research reactors [2].…”

Section: Introductionmentioning

confidence: 99%

Self-Powered Neutron Detector Calibration Using a Large Vertical Irradiation Hole of HANARO

2018

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Abstract-A calibration technology of the self-powered neutron detectors (SPNDs) using a large vertical irradiation hole of HANARO is developed. The 40 Rh-SPNDs are installed on the polycarbonate plastic support, and the gold wires with the same length as the effective length of the rhodium emitter of the SPND are also installed to measure the neutron flux on the SPND. They are irradiated at a low reactor power, and the SPND current is measured using the pico-ammeter. The external gamma-rays which affect the SPND current response are analyzed using the Monte Carlo simulation for various irradiation conditions in HANARO. It is confirmed that the effect of the external gamma-rays to the SPND current is dependent on the reactor characteristics, and that it is affected by materials around the detector. The current signals due to the external gamma-rays can be either positive or negative, in that the net flow of the current may be either in the same or the opposite direction as the neutron-induced current by the rhodium emitter. From the above procedure, the effective calibration methodology of multiple SPNDs using the large hole of HANARO is developed. It could be useful for the calibration experiment of the neutron detectors in the research reactors.

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Section: Introductionmentioning

confidence: 99%