Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section

To accurately measure neutron-induced fission cross sections, to characterize neutron-beam lines or to make dosimetric investigations, it is necessary to have high accuracy measurements of neutron fluence. It is possible to perform independent and precise neutron flux measurements with respect to th...

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Autores principales:	Chatel Carole, Mathieu Ludovic, Aïche Mourad, Diakaki Maria, Noguere Gilles, Bouland Olivier
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	gaseous proton recoil telescope low energy neutron flux measurements Physics QC1-999
Acceso en línea:	https://doaj.org/article/c2fd40057a874a55ae4366c08b5d0681
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spelling	oai:doaj.org-article:c2fd40057a874a55ae4366c08b5d06812021-12-02T17:12:46ZTowards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section2100-014X10.1051/epjconf/202125311013https://doaj.org/article/c2fd40057a874a55ae4366c08b5d06812021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_11013.pdfhttps://doaj.org/toc/2100-014XTo accurately measure neutron-induced fission cross sections, to characterize neutron-beam lines or to make dosimetric investigations, it is necessary to have high accuracy measurements of neutron fluence. It is possible to perform independent and precise neutron flux measurements with respect to the 1H(n,n)p elastic scattering cross section. The use of a silicon detector is recommended from 1 to 70 MeV neutron energy. However, it has been observed that a high electrons background forbids its use below 1 MeV. Hence, a new gaseous proton-recoil telescope is developed and characterized to overcome this limit. It should provide quasi-absolute neutron flux measurements with an accuracy around 3% and is not sensible to gamma and electrons background. It consists in two ionization chambers read by a segmented micromegas technology detection plane. The gas pressure inside is adjustable to the proton range in the detector and therefore to the neutron energy. This detector is described in details below and the newest results of its characterization are presented. A special attention is paid to detection efficiency measurements.Chatel CaroleMathieu LudovicAïche MouradDiakaki MariaNoguere GillesBouland OlivierEDP Sciencesarticlegaseous proton recoil telescopelow energy neutron flux measurementsPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 11013 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	gaseous proton recoil telescope low energy neutron flux measurements Physics QC1-999
spellingShingle	gaseous proton recoil telescope low energy neutron flux measurements Physics QC1-999 Chatel Carole Mathieu Ludovic Aïche Mourad Diakaki Maria Noguere Gilles Bouland Olivier Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section
description	To accurately measure neutron-induced fission cross sections, to characterize neutron-beam lines or to make dosimetric investigations, it is necessary to have high accuracy measurements of neutron fluence. It is possible to perform independent and precise neutron flux measurements with respect to the 1H(n,n)p elastic scattering cross section. The use of a silicon detector is recommended from 1 to 70 MeV neutron energy. However, it has been observed that a high electrons background forbids its use below 1 MeV. Hence, a new gaseous proton-recoil telescope is developed and characterized to overcome this limit. It should provide quasi-absolute neutron flux measurements with an accuracy around 3% and is not sensible to gamma and electrons background. It consists in two ionization chambers read by a segmented micromegas technology detection plane. The gas pressure inside is adjustable to the proton range in the detector and therefore to the neutron energy. This detector is described in details below and the newest results of its characterization are presented. A special attention is paid to detection efficiency measurements.
format	article
author	Chatel Carole Mathieu Ludovic Aïche Mourad Diakaki Maria Noguere Gilles Bouland Olivier
author_facet	Chatel Carole Mathieu Ludovic Aïche Mourad Diakaki Maria Noguere Gilles Bouland Olivier
author_sort	Chatel Carole
title	Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section
title_short	Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section
title_full	Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section
title_fullStr	Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section
title_full_unstemmed	Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section
title_sort	towards the experimental validation of a small time-projection-chamber for the quasi-absolute measurement of the fission cross section
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/c2fd40057a874a55ae4366c08b5d0681
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Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section

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