Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurement
Accurate actinides fission cross sections around 1 MeV are of primary importance for the safety of generation IV reactors. To have accurate measurements, the neutron flux must also be accurately estimated. This is usually done with respect to the 235U(n,f) cross section. It is however possible to me...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/10/epjconf_nd2023_01012.pdf |
| _version_ | 1797807695720349696 |
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| author | Chatel Carole Mathieu Ludovic Aïche Mourad Diakaki Maria Bouland Olivier |
| author_facet | Chatel Carole Mathieu Ludovic Aïche Mourad Diakaki Maria Bouland Olivier |
| author_sort | Chatel Carole |
| collection | DOAJ |
| description | Accurate actinides fission cross sections around 1 MeV are of primary importance for the safety of generation IV reactors. To have accurate measurements, the neutron flux must also be accurately estimated. This is usually done with respect to the 235U(n,f) cross section. It is however possible to measure the neutron flux with respect to the 1H(n,n)p cross section which is a primary standard, providing an independent and precise measurement. Typically, the usual proton recoil technique uses a silicon detector for neutrons of energy between 1 and 70 MeV. However, the high electron and gamma background due to neutron production under irradiation makes the use of this or any other detector not suitable for an accurate measurement below 1 MeV. To this end, the Gaseous Proton Recoil Telescope is developed and characterized. The goal is to provide quasi-absolute neutron flux measurements with an accuracy better than 3%. It consists of a double ionization chamber with a Micromegas segmented detection plane and the gaseous pressure can be adjusted to protons – and hence neutron – energy. The sensitivity to gamma and electrons background, the intrinsic efficiency as well as the resolution of this detector have been investigated. |
| first_indexed | 2024-03-13T06:26:29Z |
| format | Article |
| id | doaj.art-1a96d5623ebc460fab532a631e3cfa4a |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-03-13T06:26:29Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-1a96d5623ebc460fab532a631e3cfa4a2023-06-09T09:16:15ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012840101210.1051/epjconf/202328401012epjconf_nd2023_01012Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurementChatel Carole0Mathieu Ludovic1Aïche Mourad2Diakaki Maria3Bouland Olivier4Institut Pluridisciplinaire Huber CurienLaboratoire de Physique des 2 infinisLaboratoire de Physique des 2 infinisNational Technical University of Athens, Department of PhysicsCEA, DES/IRESNE/DER/SPRC/LEPhAccurate actinides fission cross sections around 1 MeV are of primary importance for the safety of generation IV reactors. To have accurate measurements, the neutron flux must also be accurately estimated. This is usually done with respect to the 235U(n,f) cross section. It is however possible to measure the neutron flux with respect to the 1H(n,n)p cross section which is a primary standard, providing an independent and precise measurement. Typically, the usual proton recoil technique uses a silicon detector for neutrons of energy between 1 and 70 MeV. However, the high electron and gamma background due to neutron production under irradiation makes the use of this or any other detector not suitable for an accurate measurement below 1 MeV. To this end, the Gaseous Proton Recoil Telescope is developed and characterized. The goal is to provide quasi-absolute neutron flux measurements with an accuracy better than 3%. It consists of a double ionization chamber with a Micromegas segmented detection plane and the gaseous pressure can be adjusted to protons – and hence neutron – energy. The sensitivity to gamma and electrons background, the intrinsic efficiency as well as the resolution of this detector have been investigated.https://www.epj-conferences.org/articles/epjconf/pdf/2023/10/epjconf_nd2023_01012.pdf |
| spellingShingle | Chatel Carole Mathieu Ludovic Aïche Mourad Diakaki Maria Bouland Olivier Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurement EPJ Web of Conferences |
| title | Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurement |
| title_full | Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurement |
| title_fullStr | Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurement |
| title_full_unstemmed | Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurement |
| title_short | Development of a small Time-Projection-Chamber for the quasi-absolute neutron flux measurement |
| title_sort | development of a small time projection chamber for the quasi absolute neutron flux measurement |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/10/epjconf_nd2023_01012.pdf |
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