Monte Carlo 방법을 이용한 로듐 및 바나듐 자발 중성자계측기의 연소에 따른 민감도 평가
Depletion Sensitivity Evaluation of Rhodium and VanadiumSelf-Powered Neutron Detector (SPND) using Monte Carlo Method
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초록
Self-powered neutron detector (SPND) is a sensor to monitor a neutron flux proportional to a reactor power of the nuclear powerplants. Since an SPND is usually installed in the reactor core and does not require additional outside power, it generates electrons itselffrom interaction between neutrons and a neutron-sensitive material called an emitter, such as rhodium and vanadium. This paper presentsthe simulations of the depletion sensitivity evaluations based on MCNP models of rhodium and vanadium SPNDs and light water reac-tor fuel assembly. The evaluations include the detail geometries of the detectors and fuel assembly, and the modeling of rhodium andvanadium emitter depletion using MCNP and ORIGEN-S codes, and the realistic energy spectrum of beta rays using BETA-S code.The results of the simulations show that the lifetime of an SPND can be prolonged by using vanadium SPND than rhodiumSPND. Also, the methods presented here can be used to analyze a life-time of those SPNDs using various emitter materials.
Abstract
Self-powered neutron detector (SPND) is a sensor to monitor a neutron flux proportional to a reactor power of the nuclear powerplants. Since an SPND is usually installed in the reactor core and does not require additional outside power, it generates electrons itselffrom interaction between neutrons and a neutron-sensitive material called an emitter, such as rhodium and vanadium. This paper presentsthe simulations of the depletion sensitivity evaluations based on MCNP models of rhodium and vanadium SPNDs and light water reac-tor fuel assembly. The evaluations include the detail geometries of the detectors and fuel assembly, and the modeling of rhodium andvanadium emitter depletion using MCNP and ORIGEN-S codes, and the realistic energy spectrum of beta rays using BETA-S code.The results of the simulations show that the lifetime of an SPND can be prolonged by using vanadium SPND than rhodiumSPND. Also, the methods presented here can be used to analyze a life-time of those SPNDs using various emitter materials.
참고문헌 (9)
- William H. Todt, "Characteristics of Self-Powered Neutron Detectors used in Power Reactors", Imaging and Sensing Technology Corporation
- Gauld, I. C., "BETA-S: A Code to Calculate Multigroup Beta Spectra", RC-1564 (COG-93-33-I), ~ (1996)
- I. C. Gauld, "ORIGEN-S: Depletion Module to Calculate Neutron Activation, Actinide Transmutation, Fission Product Generation, and Radiation Source Terms", ORNL, 39 Version 6.1, Oak Ridge National Laboratory, pp.2005, ~
- Goorley, J. T., "Initial MCNP6 Release Overview-MCNP6 Version 1.0. LA-UR-13-22935", LANL, ~ (2013)
- H. Lee, "New Calculation Model for Self-Powered Neutron Detector Based on Monte Carlo Simulation", Journal of Nuclear Science and Technology (2014)
- H. D. Warren, "Neutron and Gamma-Ray Effects on Self-Powered In-Core Radiation Detectors", Nucl. Sci. Eng, 54, pp.395~ (1974)
- Katz, L., "Range-energy Relations for Electrons and the Determination of Beta-ray End-point Energies by Absorption", Reviews of Modern Physics, 24, pp.28~44 (1952)
- 차호균, "Monte Carlo 방법을 이용한 바나듐 자발 중성자계측기 초기 민감도 계산", 센서학회지, 25(3), pp.229~234 (2016), 한국센서학회[DOI]
- The B&W Company, "Rhodium In-Core Detector Sensitivity Depletion, Cycles 2-6", EPRI NP-3814, ~ (1984)