Optimising Foil Selection for Neutron Activation Systems

O. Wong; R. Smith; C. R. Nobs; A. M. Bruce

doi:10.1007/s10894-022-00324-w

Optimising Foil Selection for Neutron Activation Systems

O. Wong, R. Smith, C. R. Nobs, A. M. Bruce

University of Brighton

Research output: Contribution to journal › Article › peer-review

Abstract

Neutron spectrum unfolding using activation foils is currently the primary technique planned for measuring the neutron energy spectrum at the first wall of power-generating fusion reactors. Room for improvement in the effectiveness of current foil selection was identified, and a program produced to select foils procedurally in order to maximise the accuracy of the unfolding procedure. Using Kullback–Leibler Divergence to quantify the accuracy, the spectrum unfolded by the procedurally selected set of foils is found to be more accurate than the spectrum unfolded by a set of foils used in the literature.

Original language	English
Article number	12
Number of pages	8
Journal	Journal of Fusion Energy
Volume	41
Issue number	1
DOIs	https://doi.org/10.1007/s10894-022-00324-w
Publication status	Published - 14 Jun 2022

Bibliographical note

This work was part funded by the EPSRC Grant [Grant Number EP/T012250/1], STFC [Grant Number ST/P003982/1 and ST/V001086/1], and the U.S. Department of Energy, Office of Science, Nuclear Physics program [Grant Number DE-FG02-94ER40870].

Keywords

MAXED
Neutron activation system
Neutron spectrum unfolding

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10.1007/s10894-022-00324-wLicence: CC BY

Cite this

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abstract = "Neutron spectrum unfolding using activation foils is currently the primary technique planned for measuring the neutron energy spectrum at the first wall of power-generating fusion reactors. Room for improvement in the effectiveness of current foil selection was identified, and a program produced to select foils procedurally in order to maximise the accuracy of the unfolding procedure. Using Kullback–Leibler Divergence to quantify the accuracy, the spectrum unfolded by the procedurally selected set of foils is found to be more accurate than the spectrum unfolded by a set of foils used in the literature.",

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AU - Smith, R.

AU - Nobs, C. R.

AU - Bruce, A. M.

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Y1 - 2022/6/14

N2 - Neutron spectrum unfolding using activation foils is currently the primary technique planned for measuring the neutron energy spectrum at the first wall of power-generating fusion reactors. Room for improvement in the effectiveness of current foil selection was identified, and a program produced to select foils procedurally in order to maximise the accuracy of the unfolding procedure. Using Kullback–Leibler Divergence to quantify the accuracy, the spectrum unfolded by the procedurally selected set of foils is found to be more accurate than the spectrum unfolded by a set of foils used in the literature.

AB - Neutron spectrum unfolding using activation foils is currently the primary technique planned for measuring the neutron energy spectrum at the first wall of power-generating fusion reactors. Room for improvement in the effectiveness of current foil selection was identified, and a program produced to select foils procedurally in order to maximise the accuracy of the unfolding procedure. Using Kullback–Leibler Divergence to quantify the accuracy, the spectrum unfolded by the procedurally selected set of foils is found to be more accurate than the spectrum unfolded by a set of foils used in the literature.

KW - MAXED

KW - Neutron activation system

KW - Neutron spectrum unfolding

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DO - 10.1007/s10894-022-00324-w

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SN - 0164-0313

VL - 41

JO - Journal of Fusion Energy

JF - Journal of Fusion Energy

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M1 - 12

ER -

Optimising Foil Selection for Neutron Activation Systems

Abstract

Bibliographical note

Keywords

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