Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method

C. Dubi; B. Geslot; P. Blaise; H. Ettedgui; A. Kolin; E. Gilad

Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method

C. Dubi, B. Geslot, P. Blaise, H. Ettedgui, A. Kolin, E. Gilad

Unit of Nuclear Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

Dead time effect in neutron detections, caused by both the detector and the electronics dead time, is a highly non-linear effect, known to create high biasing in physical experiments as the power grows over a certain threshold. Modeling the dead time is a highly complicated task, due to the different nature of the loss of counts in the different components of the monitoring system (paralyzable Vs. non-paralyzable), and the stochastic nature of the fission chains. In the present study, we introduce a new technique for dead time corrections, based on extrapolating the losses due to artificially enforced dead time on the data back to zero. The method has been implemented on actual neutron counting from the MINERVE reactor, demonstrating high accuracy in restoring the corrected count rate.

Original language	English
Title of host publication	Physics of Reactors 2016, PHYSOR 2016
Subtitle of host publication	Unifying Theory and Experiments in the 21st Century
Publisher	American Nuclear Society
Pages	3649-3659
Number of pages	11
ISBN (Electronic)	9781510825734
State	Published - 1 Jan 2016
Event	Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016 - Sun Valley, United States Duration: 1 May 2016 → 5 May 2016

Publication series

Name	Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century
Volume	6

Conference

Conference	Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016
Country/Territory	United States
City	Sun Valley
Period	1/05/16 → 5/05/16

Keywords

Dead time corrections
Physical experiments
Reactor monitoring

ASJC Scopus subject areas

Nuclear Energy and Engineering
Nuclear and High Energy Physics

Cite this

Dubi, C., Geslot, B., Blaise, P., Ettedgui, H., Kolin, A., & Gilad, E. (2016). Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method. In Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century (pp. 3649-3659). (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century; Vol. 6). American Nuclear Society.

Dubi, C. ; Geslot, B. ; Blaise, P. et al. / Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method. Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. American Nuclear Society, 2016. pp. 3649-3659 (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century).

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Dubi, C, Geslot, B, Blaise, P, Ettedgui, H, Kolin, A & Gilad, E 2016, Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method. in Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century, vol. 6, American Nuclear Society, pp. 3649-3659, Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016, Sun Valley, United States, 1/05/16.

Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method. / Dubi, C.; Geslot, B.; Blaise, P. et al.
Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. American Nuclear Society, 2016. p. 3649-3659 (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century; Vol. 6).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Geslot, B.

AU - Blaise, P.

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AU - Kolin, A.

AU - Gilad, E.

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AB - Dead time effect in neutron detections, caused by both the detector and the electronics dead time, is a highly non-linear effect, known to create high biasing in physical experiments as the power grows over a certain threshold. Modeling the dead time is a highly complicated task, due to the different nature of the loss of counts in the different components of the monitoring system (paralyzable Vs. non-paralyzable), and the stochastic nature of the fission chains. In the present study, we introduce a new technique for dead time corrections, based on extrapolating the losses due to artificially enforced dead time on the data back to zero. The method has been implemented on actual neutron counting from the MINERVE reactor, demonstrating high accuracy in restoring the corrected count rate.

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Dubi C, Geslot B, Blaise P, Ettedgui H, Kolin A, Gilad E. Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method. In Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. American Nuclear Society. 2016. p. 3649-3659. (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century).

Evaluating dead time corrections in reactor neutrons detector readings using the backward exterpolation method

Abstract

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Keywords

ASJC Scopus subject areas

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