Development of a portable neutron imager
Description
The subject of the thesis aims at developing a portable neutron imager with detection performance compatible with the needs of the nuclear research and industry, in particular those of decommissioning. This thesis is divided into three main areas of research, preceded by a bibliographic research phase. Following the latter, the localization approach adopted is spatial encoding fast neutron imaging. Neutron detectors were studied and several choices adapted to this challenge were selected for the continuation of the study. The first axis is dedicated to the studies on the development of a position-sensitive neutron detector. The second axis is related to the design and prototyping of a portable neutron imager, based on a coded aperture and a Timepix detector enhanced with a paraffin layer. The last axis concerns the deployment and experimental characterization of this prototype. (author)
Abstract (French)
Le sujet de la these vise a developper un imageur neutron portable presentant des performances de detection compatibles avec les besoins de la recherche et de l'industrie nucleaire, notamment ceux du demantelement. Cette these se decompose en trois axes principaux de recherche, precedes d'une phase de recherche bibliographique. Suite a cette derniere, l'approche de localisation retenue est l'imagerie de neutrons rapides par encodage spatial. Les detecteurs de neutrons ont ete etudies et plusieurs choix, adaptes a cette problematique, ont ete retenus pour la suite de l'etude. Le premier axe est consacre aux etudes sur le developpement d'un detecteur de neutrons sensible a la position. Le deuxieme axe est lie a la conception et au prototypage d'un imageur neutronique, se reposant sur un masque code et un detecteur Timepix modifie par une couche de paraffine. Le dernier axe concerne le deploiement et la caracterisation experimentale de ce prototype
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Additional details
Additional titles
- Original title (French)
- Developpement d'un imager neutron portable
Publishing Information
- Imprint Pagination
- 229 p.
- Report number
- FRCEA-TH--14897
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 54015251
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- DECOMMISSIONING; FAST NEUTRONS; NEUTRON DETECTORS; NUCLEAR INDUSTRY; POSITION SENSITIVE DETECTORS
- Descriptors DEC
- BARYONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INDUSTRY; MEASURING INSTRUMENTS; NEUTRONS; NUCLEONS; RADIATION DETECTORS
Optional Information
- Notes
- 182 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses