MPACT Fast Neutron Multiplicity System Prototype Development

Plutonium measurements with a fast-neutron multiplicity counter for nuclear safeguards applications

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2014.06.028 ◽

2014 ◽

Vol 763 ◽

pp. 565-574 ◽

Cited By ~ 22

Author(s):

Jennifer L. Dolan ◽

Marek Flaska ◽

Alexis Poitrasson-Riviere ◽

Andreas Enqvist ◽

Paolo Peerani ◽

...

Keyword(s):

Fast Neutron ◽

Neutron Multiplicity ◽

Nuclear Safeguards

Download Full-text

Automatic Visible Defect Detection and Classification System Prototype Development for Iron-and-Steel Works

2018 Global Smart Industry Conference (GloSIC) ◽

10.1109/glosic.2018.8570081 ◽

2018 ◽

Author(s):

Rustem Alkapov ◽

Artem Konyshev ◽

Nikita Vetoshkin ◽

Nikolay Valkevich ◽

Pavel Kostenetskiy

Keyword(s):

Defect Detection ◽

Classification System ◽

Iron And Steel ◽

Prototype Development ◽

Iron And Steel Works ◽

System Prototype ◽

Visible Defect ◽

Steel Works

Download Full-text

Application research on neutron-gamma discrimination based on BC501A liquid scintillator

Kerntechnik ◽

10.1515/kern-2021-0014 ◽

2021 ◽

Vol 86 (6) ◽

pp. 437-444

Author(s):

J. Luo ◽

S. Hou

Keyword(s):

Fast Neutron ◽

Figure Of Merit ◽

Gamma Ray ◽

Liquid Scintillator ◽

Comparison Method ◽

Mean Value ◽

Neutron Multiplicity ◽

Nuclear Disarmament ◽

Zero Crossing ◽

Non Destructive

Abstract Liquid organic scintillators are widely used in non-destructive analysis, which plays an important role in nuclear disarmament verification. This paper focused on studying the neutron-gamma discrimination technology in the fast neutron multiplicity measuring counter based on BC501A liquid scintillation detector. First, the charge comparison method, the zero-crossing time method and the rise time method were compared via the Geant4 and Matlab algorithm, and the result shows that charge comparison has the highest Figure of Merit. Then, a neutron-gamma discrimination system based on the six-probe fast neutron multiplicity counter was built and tested with a conclusion that the mean value of Figure of merit is 1.08, which verify the satisfactory neutron-gamma discriminating capability of the system. Finally, for the uranium samples, the mass are detected by fast neutron multiplicity counter, and the enrichment are measured by the characteristic gamma-ray signals using the system. The experimental results are in good agreement with the actual data.

Download Full-text

ITER ICH Transmission Line and Matching System Prototype Development

10.1063/1.3664927 ◽

2011 ◽

Cited By ~ 1

Author(s):

D. A. Rasmussen ◽

D. W. Swain ◽

R. H. Goulding ◽

P. V. Pesavento ◽

B. Peters ◽

...

Keyword(s):

Transmission Line ◽

Prototype Development ◽

System Prototype

Download Full-text

Statistical estimation of the performance of a fast-neutron multiplicity system for nuclear material accountancy

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2014.09.027 ◽

2015 ◽

Vol 784 ◽

pp. 448-454 ◽

Cited By ~ 20

Author(s):

David L. Chichester ◽

Scott J. Thompson ◽

Mathew T. Kinlaw ◽

James T. Johnson ◽

Jennifer L. Dolan ◽

...

Keyword(s):

Fast Neutron ◽

Statistical Estimation ◽

Nuclear Material ◽

Neutron Multiplicity

Download Full-text

MPACT Fast Neutron Multiplicity System Design Concepts

10.2172/1057209 ◽

2012 ◽

Cited By ~ 6

Author(s):

D. L. Chichester ◽

S. A. Pozzi ◽

J. L. Dolan ◽

M. T. Kinlaw ◽

A. C. Kaplan ◽

...

Keyword(s):

System Design ◽

Fast Neutron ◽

Neutron Multiplicity ◽

Design Concepts

Download Full-text

Nuclear Material Measurement Based on Fast Neutron Multiplicity Counter

Volume 2: Nuclear Policy; Nuclear Safety, Security, and Cyber Security; Operating Plant Experience; Probabilistic Risk Assessments; SMR and Advanced Reactors ◽

10.1115/icone2020-16151 ◽

2020 ◽

Author(s):

Xianghua Su ◽

Quanhu Zhang ◽

Suxia Hou ◽

Sufen Li ◽

Jianqing Yang ◽

...

Keyword(s):

Fast Neutron ◽

Detection Efficiency ◽

Mass Range ◽

Nuclear Material ◽

Neutron Multiplicity ◽

Analytical Equation ◽

Analysis Method ◽

Sample Mass ◽

Mechanism Of Interaction ◽

Non Destructive

Abstract Fast neutron multiplicity counting (FNMC) analysis method, as a new non-destructive analysis method for nuclear materials, plays an increasingly important role in the measurement of nuclear material properties. Based on the derivation of the FNMC analytical equation of Pu material, the method of solving the sample parameters was given. By analyzing the mechanism of interaction of neutrons and matter, the model used by Geant4 (version 10.4) software was determined, and a set of three-layer, fast neutron multiplicity counters with six liquid scintillation detectors per layer was constructed. Using the fast neutron multiplicity counter to analyze the measured parameters, the detection efficiency variation was less than 0.4% within the 150g sample mass range, and the PuO2 fluctuation was less than the metal Pu. By studying the detection efficiency and the multiplicity counting rate as a function of sample mass, within the 150g sample mass range, both basically meet the model assumptions of the FNMC analytical equation. The metal Pu and PuO2 samples were set separately, and the FNMC analysis equation was solved. When the sample mass was within 150g, the sample mass solution deviation was less than 10%. The results show that the built-in fast neutron multiplicity counter can better measure Pu sample properties.

Download Full-text